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Indian Ocean

Indian Ocean

:This article is about the water body. For the Indian fusion music band, see Indian Ocean (band). The Indian Ocean is the third-largest body of water in the world, covering about 20% of the Earth's water surface. It is bounded on the north by southern Asia (the Indian subcontinent); on the west by the Arabian Peninsula and Africa; on the east by the Malay Peninsula, the Sunda Islands, and Australia; and on the south by the Southern Ocean. It is separated from the Atlantic Ocean by the 20°east meridian south of Africa, and from the Pacific by the 147°east meridian. The northernmost extent of the Indian Ocean is approximately 30°north latitude in the Persian Gulf. This ocean is nearly 10,000 km (6,200 mi) wide at the southern tips of Africa and Australia; its area is 73,556,000 km² (28,400,000 mi²), including the Red Sea and the Persian Gulf. The ocean's volume is estimated to be 292,131,000 km³ (70,086,000 mi³). Small islands dot the continental rims. Island nations within the ocean are Madagascar (formerly Malagasy Republic), the world's fourth largest island; Comoros; Seychelles; Maldives; Mauritius; and Sri Lanka. Indonesia borders it. The ocean's importance as a transit route between Asia and Africa has made it a scene of conflict. Because of its size, however, no one nation had successfully dominated until the early 1800s when Britain controlled much of the surrounding land. right

Environment

The African, Indian, and Antarctic crustal plates converge in the Indian Ocean. Their junctures are marked by branches of the Mid-Oceanic Ridge forming an inverted Y, with the stem running south from the edge of the continental shelf near Mumbai, India. The eastern, western, and southern basins thus formed are subdivided into smaller basins by ridges. The ocean's continental shelves are narrow, averaging 200 km (125 mi) in width. An exception is found off Australia's western coast, where the shelf width exceeds 1,000 km (600 mi). The average depth of the ocean is 3,890 m (12,760 ft). Its deepest point, in the Java Trench, is estimated to be 7,450 m (24,442 ft). North of 50° south latitude, 86% of the main basin is covered by pelagic sediments, of which more than one-half is globigerina ooze. The remaining 14% is layered with terrigenous sediments. Glacial outwash dominates the extreme southern latitudes.

Climate

The climate north of the equator is affected by a Monsoon wind system. Strong northeast winds blow from October until April; from May until October south and west winds prevail. In the Arabian Sea the violent monsoon brings rain to the Indian subcontinent. In the southern hemisphere the winds generally are milder, but summer storms near Mauritius can be severe. When the monsoon winds change, cyclones sometimes strike the shores of the Arabian Sea and the Bay of Bengal.

Hydrology

Bay of Bengal Among the few large rivers flowing into the Indian Ocean are the Zambezi, Arvandrud/Shatt-al-Arab, Indus, Ganges, Brahmaputra, and Irrawaddy. Currents are largely controlled by the monsoon. Two large circular currents, one in the northern hemisphere flowing clockwise and one south of the equator moving counterclockwise, constitute the dominant flow pattern. During the winter monsoon, however, currents in the north are reversed. Deepwater circulation is controlled primarily by inflows from the Atlantic Ocean, the Red Sea, and Antarctic currents. North of 20°south latitude the minimum surface temperature is 22°C (72°F), exceeding 28°C (82°F) to the east. Southward of 40°south latitude, temperatures drop quickly. Surface water salinity ranges from 32 to 37 parts per 1,000, the highest occurring in the Arabian Sea and in a belt between southern Africa and southwestern Australia. Pack ice and icebergs are found throughout the year south of about 65°south latitude. The average northern limit of icebergs is 45°south latitude.

Economy

The Indian Ocean provides major sea routes connecting the Middle East, Africa, and East Asia with Europe and the Americas. It carries a particularly heavy traffic of petroleum and petroleum products from the oilfields of the Persian Gulf and Indonesia. Large reserves of hydrocarbons are being tapped in the offshore areas of Saudi Arabia, Iran, India, and western Australia. An estimated 40% of the world's offshore oil production comes from the Indian Ocean. Beach sands rich in heavy minerals and offshore placer deposits are actively exploited by bordering countries, particularly India, South Africa, Indonesia, Sri Lanka, and Thailand. The warmth of the Indian Ocean keeps phytoplankton production low, except along the northern fringes and in a few scattered spots elsewhere; life in the ocean is thus limited. Fishing is confined to subsistence levels. Its fish are of great and growing importance to the bordering countries for domestic consumption and export. Fishing fleets from Russia, Japan, South Korea, and Taiwan also exploit the Indian Ocean, mainly for shrimp and tuna.

History

The earliest known civilizations, in the valleys of the Nile, Euphrates, Tigris, and Indus rivers and in Southeast Asia, have developed near the Indian Ocean. During Egypt's 1st dynasty (c. 3000 BCE), sailors were sent out onto its waters, journeying to Punt, thought to be part of present-day Somalia. Returning ships brought gold and Myrrh. Phoenicians of the 3rd millennium BCE may have entered the area, but no settlements resulted. The Indian Ocean is far calmer and thus open to trade earlier than the Atlantic or Pacific. The powerful monsoons also meant ships could easily sail them west early in the season, then wait a few months and return eastwards. This allowed Indonesian peoples to cross the Indian Ocean to settle in Madagascar. In the second or first century BCE Eudoxus of Cyzicus was the first Greek to cross the Indian Ocean. Hippalus is said to have discovered the direct route from Arabia to India around this time. During the first and second century CE intensive trade relations developed between Roman Egypt and the Tamil kingdoms of the Cheras, Cholas and Pandyas in Southern India. Like the Indonesian people above, the western sailors used the monsoon to cross the Ocean. The unknown author of the Periplus of the Erythraean Sea describes this route and the ports and trade goods along the coasts of Africa and India around 70 CE. In 1497 Vasco da Gama rounded the Cape of Good Hope and sailed to India, the first European to do so. The European ships, armed with heavy cannon, quickly came to dominate the trade. Portugal at first attempted to achieve pre-eminence setting up forts an the important straits and ports. But the small nation was unable to support such a vast project and they were replaced in the mid-1600s by other European powers. The Dutch East India Company (1602-1798) sought control of trade with the East across the Indian Ocean. France and Britain established trade companies for the area. Eventually Britain became the principal power and by 1815 dominated the area. The opening of the Suez Canal in 1869 revived European interest in the East, but no nation was successful in establishing trade dominance. Since World War II the United Kingdom has withdrawn from the area, to be only partially replaced by India, the USSR, and the United States. The last two have tried to establish hegemony by negotiating for naval base sites. Developing countries bordering the ocean, however, seek to have it made a "zone of peace" so that they may use its shipping lanes freely. Though the United States did manage to salvage a naval base for itself at Deigo Garcia in the middle of the Indian Ocean. On December 26 2004 the countries surrounding the Indian Ocean were hit by tsunamis caused by the 2004 Indian Ocean earthquake. The waves resulted in more than 226,000 deaths and over 1 million homeless.

Data

Southern Ocean: A spring 2000 decision by the International Hydrographic Organization delimited a fifth world ocean, stripping the southern portions of the Indian Ocean. The new ocean extends from the coast of Antarctica north to 60°south latitude which coincides with the Antarctic Treaty Limit. The Indian Ocean remains the third-largest of the world's five oceans. Area:
- total: 68.556 million km²
- seas: includes Andaman Sea, Arabian Sea, Bay of Bengal, Great Australian Bight, Gulf of Aden, Gulf of Oman, Laccadive Sea, Mozambique Channel, Persian Gulf, Red Sea, Strait of Malacca, and other tributary water bodies Coastline: 66,526 km Climate: northeast monsoon (December to April), southwest monsoon (June to October); tropical cyclones occur during May/June and October/November in the northern Indian Ocean and January/February in the southern Indian Ocean Terrain: surface dominated by counterclockwise gyre (broad, circular system of currents) in the southern Indian Ocean; unique reversal of surface currents in the northern Indian Ocean; low atmospheric pressure over southwest Asia from hot, rising, summer air results in the southwest monsoon and southwest-to-northeast winds and currents, while high pressure over northern Asia from cold, falling, winter air results in the northeast monsoon and northeast-to-southwest winds and currents; ocean floor is dominated by the Mid-Indian Ocean Ridge and subdivided by the Southeast Indian Ocean Ridge, Southwest Indian Ocean Ridge, and Ninetyeast Ridge Graphics of the seabed terrain produced by the Royal Navy & British Geological Survey in 2005 can be found here. Elevation extremes:
- lowest point: Java Trench -7,258 m
- highest point: sea level 0 m Natural resources: oil and gas fields, fish, shrimp, sand and gravel aggregates, placer deposits, polymetallic nodules Environment - current issues: endangered marine species include the dugong, seals, turtles, and whales; oil pollution in the Arabian Sea, Persian Gulf, and Red Sea Geography - note: major chokepoints include Bab el Mandeb, Strait of Hormuz, Strait of Malacca, southern access to the Suez Canal, and the Lombok Strait Ports and harbors: Calcutta (India), Chennai (Madras; India), Colombo (Sri Lanka), Durban (South Africa), Jakarta (Indonesia), Karachi (Pakistan), Fremantle (Australia), Mumbai (Bombay; India), Richards Bay (South Africa), Visakhapatnam (India),Kochi(India)

References

- Braun, D., The Indian Ocean (1983)
- Chandra, S., ed., The Indian Ocean (1987);
- Chaudhuri, K. N., Trade and Civilization in the Indian Ocean (1985);
- Cousteau, Jacques-Yves, and Diole, Philippe, Life and Death in a Coral Sea (1971);
- Cubitt, Gerald, Islands of the Indian Ocean (1975);
- Das Gupta, A., and Pearson, M.N., India and the Indian Ocean (1987);
- Dowdy, W. L., and Trood, R., eds., The Indian Ocean (1985);
- Kerr, A., ed., Resources and Development in the Indian Ocean Region (1981);
- Nairn, A. E., and Stehli, F. G., eds., The Ocean Basins and Margins, Vol. 6: The Indian Ocean (1982);
- Ostheimer, John M., ed., The Politics of the Western Indian Ocean Islands (1975);
- Toussaint, Auguste, The History of the Indian Ocean, trans. by June Guicharnaud (1966). Much of this text is based on public domain text by US Naval Oceanographer at: http://oceanographer.navy.mil/indian.html

External links

- [http://dapper.pmel.noaa.gov/dchart/ NOAA In-situ Ocean Data Viewer] Plot and download ocean observations Category:Oceans Category:Indian Ocean zh-min-nan:Ìn-tō·-iûⁿ ko:인도양 ja:インド洋 simple:Indian Ocean th:มหาสมุทรอินเดีย

Indian Ocean (band)

Indian Ocean is a contemporary fusion music band of Northern India. Some music critics describe the Indian Ocean music as "Indo-rock fusion with jazz-spiced rhythms that integrates sufism, shlokas, environmentalism, mythology and revolution". shlokas]

Beginnings - Indian Ocean

The band had its genesis in 1990 when Susmit Sen met Asheem Chakravarty and their somewhat focused jamming sessions resulted in a few concerts. Susmit was on the guitar and Asheem on tabla and drums with no vocalist. In 1990, with Shaleen Sharma on drums, they recorded their first demo. In 1991, Rahul Ram, a schoolmate of Susmit's joined the band on bass. After a lot of persuasion, and on the strength of the demo tape, HMV agreed to record Indian Ocean's first album in Kolkata (formerly Calcutta). It took another year for it to be. In the first five years of the band's existence they played exactly four concerts. Shaleen, the drummer, left the band in March, 1994. In his place came Amit Kilam, just out of his teens and still doing college exams. Vocals were then added, Susmit and Asheem left their jobs and had kids. Music became their only source of income - when not playing concerts, they odd-jobbed on music for television serials, advertiements and documentaries.

Desert Rain

Calcutta On New Year's Eve, 1997, they played at Mandi House in Delhi. The crowd gave Indian Ocean an overwhelming response and soon after, their next album had happened. A recording of the show was released a couple of months later by a company called Independent Music which was formed only to release the album - Desert Rain. Susmit, Amit and Rahul played a concert with violin player Dr. L. Subramaniam while Asheem played in a concert with American folk singer Pete Seeger. The whole band also had the privilege of jamming with renowned Japanese trumpeter Terumasa Hino in Delhi, and played with some great Japanese jazz musicians during their Japanese tour in 2002. Rahul and Amit had the chance of performing on stage with renowned percussionists Vikoo Vinayakram and his son Selva Ganesh at Almora in 2003.

Kandisa

Almora The band went on the road - playing gigs in Gujarat, Rajasthan, Uttar Pradesh, West Bengal, Madhya Pradesh, Karnataka, Haryana, Maharashtra. The break though into the mainstream came some time in late 1998 when Times Music (a division of Times of India) signed up the band. A few months later, Indian Ocean were invited to play at the Millennium celebrations at Khajuraho. K. R. Narayanan, then President of India, was one of the first people to hear the special composition, which is one of the high points of their album, Kandisa. The album was released in March 2000 and went on to become one of the best-loved albums produced in India. Kandisa acquired cult status and propelled Indian Ocean into the status of one of India’s most original and creative band. The band left Indian shores for the first time ever in August 2001. They played their first concert abroad in London, and then went on to the Edinburgh Fringe Festival, where they played 18 concerts in 14 days, and were nominated the Pick of the Fringe. They returned to the Fringe in 2002 and 2003. In 2002, the band played 37 concerts abroad across four continents: New Zealand, USA, United Kingdom, Japan, Australia and Indonesia. In 2003 they toured the UK twice, as well as Australia, Germany, Singapore, and Réunion. In addition, they continued to play all over India.

Jhini and after

Réunion Jhini, the fourth album, was recorded at Kosmic Studios in Varadeipalyam, Andhra Pradesh, in the midst of fields and hills, a hundred kilometres north of Chennai. The album was released in May 2003, and the band had their first video made, were MTV Artists of the Month. They then went to compose music for their first major full-length feature film in early 2004: Black Friday, released in January 2005, is based on the 1993 Mumbai bombings.

Members

Susmit Sen (acoustic guitar)

Susmit has virtually invented a new style of playing the guitar, an uncannily Indian sound where purity of scale reigns, strong melodic lines woven around the drone of open strings. His guitar style forms the basis of Indian Ocean's unique sound.

Asheem Chakravarty (tabla, percussions & vocals)

Asheem showed his rhythmic spark at an extremely early age, amazing musicians who learnt that he never had any formal training.

Amit Kilam (drums)

Amit’s drumming is a strange balance between the conventional and non-conventional. Largely self-taught, he believes in layering rhythm rather than a heavy drum layer, since he believes in simplicity, not technical wizardry, thus becoming the backbone of the solid sound that the band has. He incorporates Indian rhythms into his drumming in a unique fashion, moving in cycles of 8, 10, 12 14, 16, rather than simple 4/4 or ¾ styles. Not a “psychotic drummer”, he goes easy on the skins, yet his playing is very dynamic. Was introduced to music at the age of 4 by his parents, learning the guitar (hawain - Indian classical). He is an instinctive musician, picking up several instruments very easily, and he sings also. Loves listening to various kinds of music – Hindi filmi, rock, pop – favorites are A R Rahman, Trilok Gurtu and Deep Purple.

Rahul Ram (bass guitar and vocals)

His experiences as an activist/supporter with the Narmada Bachao Andolan (1990-1995) and while doing his PhD in Environmental Toxicology from Cornell University (New York) (1986-90) have strongly influenced his musical expression.

Discography

- Indian Ocean (1993)
- Desert Rain (1997)- Desert rain, Euphoria, Going to ITO, Village Damsel, From the ruins, Boll weevil, Melancholic ecstasy
- Kandisa (2000) - Kya Maloom, Ma Rewa, Leaving Home, Hille Re, Khajuraho, Kaun, Kandisa
- Jhini (2004) - Bhor, Jhini, Des Mera, After the war, Nam ya ho, Let me speak, Torrent

Filmography

Cornell University
- Black Friday (2005) - Bandeh, Badshah in Jail, Memon House, RDX, Bharam Baap Ke, Opening (Pre Blast), Bomb Planting, Training, Chase

External links

- [http://www.indianoceanmusic.com Official Website of the Indian Ocean Band]

Asia

Asia is the central and eastern part of Eurasia, and the world's largest continent. Defined by subtracting Europe from Eurasia, Asia is either regarded as a landmass of its own, or as part of Eurasia. The demarcation between Asia and Africa is the isthmus of Suez (although the Sinai Peninsula, being a part of Egypt east of the canal, is often geopolitically considered a part of Africa). The boundary between Asia and Europe runs via the Dardanelles, the Sea of Marmara, the Bosporus, to the Black Sea, the Caucasus Mountains, the Caspian Sea, the Ural River to its source, and the Ural Mountains to the Kara Sea at Kara, Russia. About 60 percent of the world's human population lives in Asia. Asia as a political division consists of the eastern part of Eurasia and nearby islands in the Indian and Pacific Oceans, often excluding Russia. Pacific Ocean

Etymology

The word Asia entered English, via Latin, from Ancient Greek Ασία (Asia; see also List of traditional Greek place names). This name is first attested in Herodotus (c. 440 BC), where it refers to Asia Minor; or, for the purposes of describing the Persian Wars, to the Persian Empire, as opposed to Greece and Egypt. Even before Herodotus, Homer knew of a Trojan ally named Asios, son of Hyrtacus, a ruler over several towns, and elsewhere he describes a marsh as ασιος (Iliad 2, 461). The Greek term may be derived from from Assuwa, a 14th century BC confederation of states in Western Anatolia. Hittite assu- "good" is probably an element in that name. Alternatively, the ultimate etymology of the term may be from the Akkadian word (w)aṣû(m), cognate of Hebrew יצא, which means "to go out", referring to the direction of the sun at sunset in the Middle East. This may be compared to a similar etymology proposed for Europe, as being from Semitic erēbu "to enter" or "set" (of the sun). These etymologies presuppose an originally Mesopotamian or Middle Eastern perspective, which would explain how the term "Asia" first came to be associated with Anatolia as lying west of the Semitic speaking area.

Geographical Regions

See also Geography of Asia. As already mentioned, Asia is a subregion of Eurasia. For further subdivisions based on that term, see North Eurasia and Central Eurasia. Some Asian countries stretch beyond Asia. See Bicontinental country for details about the borderline cases between Asia and Europe, Asia and Africa and Asia and Oceania. Asia itself is often divided in the following subregions:
- North Asia
- Central Asia
- East Asia (or Far East)
- Southeast Asia
- South Asia (or Indian Subcontinent)
- Southwest Asia (or West Asia)

North Asia

This term is rarely used by geographers, but usually it refers to the bigger Asian part of Russia, also known as Siberia. Sometimes the northern parts of other Asian nations, such as Kazakhstan are also included in Northern Asia.

Central Asia

There is no absolute consensus in the usage of this term. Usually, Central Asia includes:
- the Central Asian Republics of Kazakhstan (excluding its small European territory), Uzbekistan, Tajikistan, Turkmenistan and Kyrgyzstan.
- Afghanistan, Mongolia, and the western regions of China are also sometimes included.
- Former Soviet states in the Caucasus region. Central Asia is currently geopolitically important because international disputes and conflicts over oil pipelines, Nagorno-Karabakh, and Chechnya, as well as the presence of U.S. military forces in Afghanistan.

East Asia (or Far East)

This area includes:
- The Pacific Ocean islands of Taiwan and Japan.
- North and South Korea on the Korean Peninsula.
- China, but sometimes only the eastern regions Sometimes the nations of Mongolia and Vietnam are also included in East Asia. More informally, Southeast Asia is included in East Asia on some occasions.

Southeast Asia

This region contains the Malay Peninsula, Indochina and islands in the Indian Ocean and Pacific Ocean. The countries it contains are:
- In mainland Southeast Asia, the countries Myanmar, Thailand, Laos, Cambodia and Vietnam.
- In Maritime Southeast Asia, the countries of Malaysia, Brunei, the Philippines, Singapore and Indonesia (some of the Indonesian islands also lie in the Melanesia region of Oceania). East Timor (also Melanesian) is sometimes included too. The country of Malaysia is divided in two by the South China Sea, and thus has both a mainland and island part.

South Asia (or Indian Subcontinent)

South Asia is also referred to as the Indian Subcontinent. It includes:
- the Himalayan States of India, Pakistan, Nepal, Bhutan and Bangladesh.
- the Indian Ocean nations of Sri Lanka and the Maldives.

Southwest Asia (or West Asia)

This can also be called by the Western term Middle East, which is commonly used by Europeans and Americans. Middle East (to some interpretations) is often used to also refer to some countries in North Africa. Southwest Asia can be further divided into:
- Anatolia (i.e. Asia Minor), constituting the Asian part of Turkey.
- The island nation of Cyprus in the Mediterranean Sea.
- The Levant or Near East, which includes Syria, Israel, Jordan, Lebanon, Iraq and the Asian portion of Egypt.
- The Arabian peninsula, including Saudi Arabia, United Arab Emirates, Bahrain, Qatar, Oman, Yemen and occasionally Kuwait.
- The Caucasus region, including Armenia, a tiny portion of Russia and almost the whole of Georgia and Azerbaijan.
- The Iranian Plateau, containing Iran and parts of other nations. Also see Gulf States, for a different grouping involving several of the above countries.

Economy

Main article: Economy of Asia In terms of gross domestic product (PPP), Asia's largest economy wholly within Asia is that of the PRC (People's Republic of China), however the economy of the E.U. (European Union), one state of which (Cyprus) lies within Asia, is the largest in the world. The E.U.'s status as a supranational union, rather than a sovereign state, makes the claim questionable, especially since, when considered alone, the economy of Cyprus is one of the smallest in both the E.U. and Asia, and not many times larger than that of East Timor, the Asian state with the smallest economy (although as of 2005 there is no reliable data for either Iraq or North Korea). Over the last decade, China's and India's economies have been growing rapidly, both with an average annual growth rate over 6%. PRC is the world's third largest economy after the E.U. and U.S.A., followed by Japan and India as the world's fourth and fifth largest economies respectively (then followed by the European nations: Germany, U.K., France and Italy). In terms of exchange rates however, Japan has the largest economy in Asia and the third largest in the world. Trade blocs:
- Asia-Pacific Economic Cooperation
- Association of Southeast Asian Nations
- Closer Economic Partnership Arrangement
- Commonwealth of Independent States
- South Asian Association for Regional Cooperation
- South Asia Free Trade Agreement (proposed)

Natural resources

Asia is by a considerable margin the largest continent in the world, and is rich in natural resources, such as Petroleum and iron. High productivity in agriculture, especially of rice, allows high population density of countries in the warm and humid area. Other main agricultural products include wheat and chicken. Forestry is extensive throughout Asia except Southwest and Central Asia. Fishing is a major source of food in Asia, particularly in Japan.

Manufacturing

Manufacturing in Asia has traditionally been strongest in East and Southeast Asia, particularly in PRC, Taiwan, Japan, South Korea and Singapore. The industry varies from manufacturing cheap goods such as toys to high-tech goods such as computers and cars. Many companies from Europe, North America, and Japan have significant operations in the developing Asia to take avantage of its abundant supply of cheap labor. One of the major employers in manufacturing in Asia is the textile industry. Much of the world's supply of clothing and footwear now originates in Southeast Asia.

Financial and other services

Asia has three main financial centers. They are in Hong Kong, Singapore and Tokyo. Call centers are becoming major employers in India, due to the availablity of many well-educated English speakers. The rise of the business process outsourcing industry has seen the rise of India and China as the other financial centers.

Early history

Main article: History of Asia The history of Asia can be seen as the distinct histories of several peripheral coastal regions, East Asia, South Asia, and the Middle East, linked by the interior mass of the Eurasian steppe. The coastal periphery was home to some of the world's earliest known civilizations, with each of the three regions developing early civilizations around fertile river valleys. The civilizations in Mesopotamia, the Indus Valley, and the Yangtze shared many similarities and likely exchanged technologies and ideas such as mathematics and the wheel. Other notions such as that of writing likely developed individually in each area. Cities, states and empires developed in these lowlands. The steppe region had long been inhabited by mounted nomads, and from the central steppes they could reach all areas of Asia. The earliest known such central expansion out of the steppe is that of the Indo-Europeans, who spread their languages into the Middle East, India, and in the Tocharians to the borders of China. The northern part of Asia, covering much of Siberia, was inaccessible to the steppe nomads, due to the dense forests and the tundra. These areas were very sparsely populated. The centre and periphery were kept separate by mountains and deserts. The Caucasus, Himalaya, Karakum Desert and Gobi Desert formed barriers that the steppe horsemen could only cross with difficulty. While technologically and culturally, the urban city dwellers were more advanced, they could do little militarily to defend against the mounted hordes of the steppe. However, the lowlands did not have enough open grasslands to support a large horsebound force. Thus the nomads who conquered states in China, India, and the Middle East were soon forced to adapt to the local societies.

Population density

The following table lists countries and dependencies by population density in inhabitants and km². Unlike the figures in the country articles, the figures in this table are based on areas including inland water bodies (lakes, reservoirs, rivers) and may therefore be lower here. The whole of Egypt, Russia, Kazakhstan, Georgia, Azerbaijan and Turkey are referred to in the table, although they are only partly in Asia.

Religion

A large majority of the people in the world who practice a religious faith practice one which was founded in Asia. Religions founded in Asia and with a majority of their contemporary adherents in Asia include:
- Bahá'í Faith (slightly more than half of all adherents are in Asia)
- Buddhism (Japan,Sri Lanka, Korea, Singapore, China, Thailand, Vietnam, Laos, Cambodia, Myanmar, Malaysia, India)
- Hinduism (India, Singapore, Malaysia, Nepal, Bali)
- Islam (Central, South, and Southwest Asia, Malaysia, Brunei and Indonesia)
- Jainism (India)
- Shinto (Japan)
- Sikhism(India, Malaysia, Hong kong)
- Taoism (China, Vietnam, Singapore, and Taiwan)
- Zoroastrianism (Iran, India, Pakistan) Religions founded in Asia that have the majority of their contemporary adherents in other regions include:
- Christianity (South Korea, Singapore, Malaysia, Indonesia, East Timor, India and the Philippines)
- Judaism (slightly fewer than half of its adherents reside in Asia)

References

External links

- http://www.lib.utexas.edu/maps/asia.html
- http://www.freeworldmaps.net/asia/index.html
- [http://www.alloexpat.com AlloExpat - Asia Information & Forums]
- [http://www.asiaexpat.info Asia Expat Forum - Discuss this region with expatriates] Category:Continents zh-min-nan:A-chiu ko:아시아 ms:Asia ja:アジア simple:Asia th:ทวีปเอเชีย

Indian subcontinent

:Southern Asia sometimes refers to all of Asia that was not part of the Soviet Union. Soviet Union Soviet Union as the international border between India and Pakistan, a position that neither party considers acceptable.)]] The term South Asia is considered often as synonymous with the term Indian subcontinent, and includes the following neighboring states:
- India, Pakistan and Bangladesh; constituting the bulk of the subcontinent proper
- the Himalayan States: Nepal and Bhutan
- the Indian Ocean Island States: Sri Lanka, the Maldives All of these countries are members of the South Asian Association for Regional Cooperation (SAARC). The US State Department’s South Asia Bureau is currently planning to include Kazakhstan, Kyrgyzstan, Turkmenistan, Tajikistan and Uzbekistan in its definition of South Asia. These countries, however, are historically considered to belong to the category of Central Asia, along with Chinese Turkestan and Mongolia are not, strictly speaking, a part of South Asia. Geographically, the Indian subcontinent would additionally include some disputed territory currently controlled by China, and Myanmar and exclude most of western and northern Pakistan and Kashmir where the Indian plate and Eurasian plate meet and collide. Politically (as in the SAARC member-states), the region covers about 4,480,000 km² (1,729,738 sq. mi.), or 10% of the Asian continent. However, its population accounts for about 40% of Asia. Some or all of Afghanistan is sometimes considered part of the region of South Asia since, due to its geographic proximity, it has shared many historical currents with the region. Recently, Afghanistan has been admitted to the SAARC as a member.

Nomenclature

The term "South Asia"' is a common contemporary term for what in times before 1947, the end of the British Raj and the beginning of the First Indo-Pakistani War, was simply known as "India" and has subsequently been referred to as "British India," though prior to Independence that term referred to those portions of the country that were directly administered by the British, as opposed to the princely states. Historically, South Asia and South-East Asia together constitute what is known as the East Indies, with the first being defined as Hither India or India Citerior and Further India or India Ulterior. These terms, however, have ceased to be current and have become arcane and largely used, if at all, by academics, with only the "East Indies" still retaining some current usage.

Geography

India Ulterior Geographically, the region is bound by the Himalaya to the north and east, and the Arabian Sea and the Bay of Bengal to the south. The Hindu Kush mountains that run through Afghanistan and northern Pakistan are usually considered the northwestern edge of the subcontinent. Geologically, most of this region is a subcontinent because it rests on a tectonic plate of its own, the India Plate, separate from the rest of Eurasia and was once a small continent before colliding with the Eurasian Plate and giving birth to the Himalayan range and the Tibetan plateau. Even now the India Plate continues to move northward with the result that the Himalaya are growing taller by a few centimetres each decade. In addition, is also home to an astounding variety of geographical features that are typical of much larger continents, such as glaciers, rainforests, valleys, deserts, and grasslands in an area about half the size of the United States. Further, the peoples of the region possess several distinguishing features that set them apart anthropologically from the rest of Asia; the dominant peoples and cultures are Indo-European and Dravidian, and have a greater affinity with Europe than with most other regions of Asia, excepting the Middle East and the Caucasus. South Asia ranks among the world's most densely-populated regions. About 1.6 billion people live there — about a quarter of all the people in the world. The region's population density of 305 persons per square kilometre is more than seven times the world average. The region has a long history. Ancient civilisations developed in the Indus River Valley. The region was at its most prosperous before the 18th century, when the Mughal Empire held sway in the north; European colonialism led to a new conquering of the region, by Portugal and Holland, and later Britain and to a lesser degree France. Most of the region gained independence from Europe in the late 1940s.

Other subregions of Asia

- East Asia
- Southeast Asia
- Central Asia
- Southwest Asia or West Asia (One definition of the Middle East is synonymous with Southwest Asia)
- North Asia (Siberia)
- Northern Eurasia (Extends into Europe)
- Central Eurasia (Extends into Europe)

External links

- [http://www.saarc-sec.org/ SAARC Secretariat]
- [http://www.slbc.lk Sri Lanka Broadcasting Corporation]
- [http://www.vernoncorea.info Vernon Corea South Asian Broadcaster] Category:Asia South Asia Category:South Asia. zh-min-nan:Lâm-a ko:남아시아 ms:Asia Selatan ja:南アジア th:เอเชียใต้

Arabia

:For other meanings, see Arabia (disambiguation). Arabia (disambiguation) The Arabian Peninsula is a mainly desert peninsula in Southwest Asia at the junction of Africa and Asia and an important part of the greater Middle East. The coastal limits of the peninsula are: on the (south)west, the Red Sea and Gulf of Aqaba; on the south(eastern) coast, the Arabian Sea (part of the Indian Ocean); and on the northeast, the Gulf of Oman, the Strait of Hormuz, and the Persian Gulf. Its northern limit is defined by the Zagros collision zone, a mountainous uplift where a continental collision between the Arabian plate and Asia is occurring. Geographically, it merges with the Syrian Desert with no clear line of demarcation. Politically, the Arabian peninsula is separated from the rest of Asia by the northern borders of Saudi Arabia and Kuwait. The following countries are considered part of the peninsula:
- Bahrain - technically an island just off the coast of the Peninsula
- Kuwait
- Oman
- Qatar
- Saudi Arabia
- United Arab Emirates
- Yemen With the exception of Yemen, these countries (called the Arab Gulf states) are among the wealthiest in the world in relation to their small populations. The country of Saudi Arabia covers the greater part of the Peninsula. The majority of the population of the peninsula lives in Saudi Arabia and in Yemen. The peninsula contains the world's largest reserves of oil and is home to the Islamic holy cities of Mecca and Medina, both of which are in Saudi Arabia. The UAE and Saudi Arabia are economically the wealthiest in the region. Qatar, a small peninsula in the Persian Gulf on the larger peninsula, is home of the famous Arabic language television station Al-Jazeera. Kuwait, on the border with Iraq and claimed as an Iraqi province, was invaded by Saddam Hussein during the first Gulf War and is an important country strategically, forming one of the main staging grounds for coalition forces to mount the invasion of Iraq in 2003. Geologically, this region is more appropriately called the Arabian subcontinent because it lies on a tectonic plate of its own, the Arabian Plate, which has been moving incrementally away from northeast Africa (forming the Red Sea) and north into the Eurasian plate (forming the Zagros mountains). The rocks exposed vary systematically across Arabia, with the oldest rocks exposed in the Arabian-Nubian Shield near the Red Sea, overlain by younger sediments that become younger towards the Persian Gulf. Perhaps the best-preserved ophiolite on Earth, Semail ophiolite, lies exposed in the mountains of the UAE and northern Oman. The peninsula is thought to have been the original homeland of the Proto-Semitic peoples, ancestors of all the Semitic peoples in the region - the Akkadians, Arabs, Assyrians, Hebrews, etc. Linguistically, the Peninsula was the cradle of the Arabic language (spread beyond the Peninsula along with the Islamic religion during the Islamic expansion beginning in the 7th century AD) and still maintains tiny populations of speakers of South Semitic languages such as Mehri and Shehri, remnants of a language family that held greater importance in earlier historical periods when the kingdom of Sheba flourished in the southern part of the peninsula (modern-day Yemen and Oman). Geographically, the peninsula consists of: # a central plateau with pastures for sheep and other livestock and fertile valleys # a range of deserts, the Nefud in the north, stony; the Rub' Al-Khali or Great Arabian Desert, a perfect Sahara, in the south, with sand estimated to extend 600 ft. below the surface; and the Dahna in between # stretches of dry or marshy coastland with coral reefs on the Red Sea side # ranges of mountains, primarily paralleling the Red Sea on the west (e.g. Asir province) and southeastern end (Oman). The highest, Jabal Al-Nabi Sho'aib in Yemen, is 3666 m high. Arabia has no lakes or permanent rivers, only wadis, which are dry except during the brief rainy season. Plentiful ancient aquifers exist beneath much of the peninsula, however, and where this water surfaces, oases form (e.g. the Al-Hasa and Qatif oases) and permit agriculture. The climate being extremely hot and arid, the peninsula has no forests, alhtough desert-adapted wildlife is present throughout the region.

Malay Peninsula

The Malay Peninsula (Malay: Semenanjung Tanah Melayu) is a major peninsula located in Southeast Asia. It runs approximately north-south and contains the most southerly point of the Asian mainland. Its narrowest point is the Isthmus of Kra. The south-west coast is separated from the island of Sumatra by the Straits of Malacca. To the east across the South China Sea lies the island of Borneo. The south coast is separated from the island of Singapore by the Straits of Johor. Singapore is not part of the Malay peninsula as it is an island. The area is divided politically:
- the northwest is the extreme south part of Myanmar
- the central region and northeast is the south part of Thailand
- the south is the part of Malaysia called Peninsular Malaysia or West Malaysia (which should not be confused with the larger Malay Peninsula). The Malay term Tanah Melayu is still occasionally used in political discourse to describe uniting all Malay people on the peninsula under one Malay nation, although this ambition was largely realized with the creation of Malaysia. There however remains a Malay majority in southern Thailand, as the area was formerly part of the Pattani kingdom, a Malay kingdom. There is also a Malay minority in the predominantly Chinese island of Singapore, which the British leased from the Sultanate of Johor in 1819. The west coast of the peninsula was especially popular among seafaring Bugis, Chinese and Indian as a stopover, leading to increased migration of the people to set up visible coastal settlements in the 13th century.

Sunda Islands

The Sunda Islands are a group of islands in the western part of the Malay Archipelago. They are divided into two groups:
- Greater Sunda Islands
- Borneo
- Java
- Sumatra
- Lesser Sunda Islands, from west to east
- Bali
- Lombok
- Sumbawa
- Flores
- Sumba
- Timor
- Barat Daya Islands
- Tanimbar Islands The territory of the islands is divided between the present-day countries of Brunei, East Timor, Indonesia, and Malaysia.

Sundanese

The Sundanese are an ethnic group in the western part of the island of Java. The Sundanese are predominantly Muslim. They speak a distinct language which is also known as Basa Sunda.

Southern Ocean

The Southern Ocean is the body of water encircling the continent of Antarctica. It is the world's fourth largest ocean and the latest defined, having been accepted by a decision of the International Hydrographic Organization in 2000, though the term has long been traditional among mariners. This change reflects the recent findings in oceanography of the importance of ocean currents. Before that, the Atlantic, Pacific and Indian Oceans were considered to extend to Antarctica, which definition is still used by some geographic authorities including the National Geographic Society. National Geographic Society

Geography

It is oceanographically defined as an ocean connected with the Antarctic Circumpolar Current, which circulates around Antarctica. It includes Amundsen Sea, Bellingshausen Sea, part of the Drake Passage, Ross Sea, a small part of the Scotia Sea, and Weddell Sea. The total area is 20,327,000 km², and the coastline length is 17,968 km. The geographic coordinates is nominally, but the Southern Ocean has the unique distinction of being a large circumpolar body of water totally encircling the continent of Antarctica; this ring of water lies between 60 degrees south latitude and the coast of Antarctica, and encompasses 360 degrees of longitude. This definition is, however, not universal. In Australia the Southern Ocean is defined in the same manner as the IHO but also includes the entire body of water between Antarctica and the south coasts of Australia and New Zealand, and is marked as such on maps. In particular, coastal maps of Tasmania and South Australia always label the sea areas as Southern Ocean and never Indian Ocean. [http://aadc-maps.aad.gov.au/database/mapcat/antarctica/aust_to_ant_jan04.pdf Map showing Australian definition of the Southern Ocean] (PDF) The Southern Ocean was formed oceanographically when Antarctica and South America moved apart opening the Drake Passage and the Antarctic Circumpolar Current was formed roughly 30 million years ago, which makes the ocean much younger than other oceans. The major chokepoint is the Drake Passage. The Polar Front (Antarctic Convergence) is the best natural definition of the northern extent of the Southern Ocean; it is a distinct region at the middle of the Antarctic Circumpolar Current that separates the very cold polar surface waters to the south from the warmer waters to the north; the Front and the Current extend entirely around Antarctica, reaching south of 60 degrees south near New Zealand and near 48 degrees south in the far South Atlantic coinciding with the path of the maximum westerly winds. Image:Iceedgekils.gif The packice zone pulsates over the year.

Climate

Sea temperatures vary from about 28 to 50 °F (-2 to 10 °C). Cyclonic storms travel eastward around the continent and frequently are intense because of the temperature contrast between ice and open ocean. The ocean area from about latitude 40 south to the Antarctic Circle has the strongest average winds found anywhere on Earth. In winter the ocean freezes outward to 65 degrees south latitude in the Pacific sector and 55 degrees south latitude in the Atlantic sector, lowering surface temperatures well below 0 degrees Celsius; at some coastal points intense persistent drainage winds from the interior keep the shoreline ice-free throughout the winter.

Terrain

The Southern Ocean is deep, 4,000 to 5,000 meters over most of its extent with only limited areas of shallow water. The antarctic continental shelf is generally narrow and unusually deep, its edge lying at depths of 400 to 800 meters (the global mean is 133 meters). The Antarctic ice pack grows from an average minimum of 2.6 million square kilometers in March to about 18.8 million square kilometers in September, more than a sevenfold increase in area. The Antarctic Circumpolar Current (21,000 km in length) moves perpetually eastward; it is the world's largest ocean current, transporting 130 million cubic meters of water per second - 100 times the flow of all the world's rivers.

Elevation extremes

- lowest point: -7,235 m at the southern end of the South Sandwich Trench, at 60°00'S, 024°W
- highest point: sea level 0 m.

Natural resources

- Probable large and possible giant oil and gas fields on the continental margin
- Manganese nodules
- Possible placer deposits
- Sand and gravel
- Fresh water as icebergs
- Squid, whales, seals, krill and various fishes

Natural hazards

Huge icebergs with drafts up to several hundred meters; smaller bergs and iceberg fragments; sea ice (generally 0.5 to 1 meter thick) with sometimes dynamic short-term variations and with large annual and interannual variations; deep continental shelf floored by glacial deposits varying widely over short distances; high winds and large waves much of the year; ship icing, especially May-October; most of the region is remote from sources of search and rescue.

Environment

Current issues

- Increased solar ultraviolet radiation resulting from the Antarctic ozone hole, reducing marine primary productivity (phytoplankton) by as much as 15% and damaging the DNA of some fish
- illegal, unreported, and unregulated fishing, especially the landing of an estimated five to six times more Patagonian toothfish than the regulated fishery, which is likely to affect the sustainability of the stock
- high incidental mortality of seabirds resulting from long-line fishing for toothfish
- the now-protected fur seal population is making a strong comeback after severe overexploitation in the 18th and 19th centuries

International agreements

The Southern Ocean is subject to all international agreements regarding the world's oceans. In addition, it is subject to these agreements specific to the region: International Whaling Commission (prohibits commercial whaling south of 40 degrees south [south of 60 degrees south between 50 degrees and 130 degrees west]); Convention for the Conservation of Antarctic Seals (limits sealing); Convention on the Conservation of Antarctic Marine Living Resources (regulates fishing)
- note: many nations prohibit mineral resource exploration and exploitation south of the fluctuating Polar Front (Antarctic Convergence) which is in the middle of the Antarctic Circumpolar Current and serves as the dividing line between the very cold polar surface waters to the south and the warmer waters to the north.

Economy overview

Fisheries in 1998-1999 (1 July to 30 June) landed 119,898 metric tons, of which 85% was krill and 14% Patagonian toothfish. International agreements were adopted in late 1999 to reduce illegal, unreported, and unregulated fishing, which in the 1998-1999 season landed five to six times more Patagonian toothfish than the regulated fishery. In the 1998-1999 Antarctic summer 10,013 tourists, most of them seaborne, visited the Southern Ocean and Antarctica, compared to 9,604 the previous year. Nearly 16,000 tourists are expected during the 1999-2000 season.

Ports and harbors

Esperanza Base, Mawson Station, McMurdo Station, Palmer Station, Scott Base, and offshore anchorages in Antarctica
- note: few ports or harbors exist on the southern side of the Southern Ocean; ice conditions limit use of most of them to short periods in midsummer; even then some cannot be entered without icebreaker escort; most antarctic ports are operated by government research stations and, except in an emergency, are not open to commercial or private vessels; vessels in any port south of 60 degrees south are subject to inspection by Antarctic Treaty observers.

Transportation note

The Drake Passage offers an alternative to transit through the Panama Canal.

External links

- [http://www.odci.gov/cia/publications/factbook/print/oo.html The CIA World Factbook's] article on the Southern Ocean
- [http://geography.about.com/library/weekly/aa091500a.htm The Fifth Ocean] from Geography.About.com
- [http://dapper.pmel.noaa.gov/dchart/ NOAA In-situ Ocean Data Viewer] Plot and download ocean observations Category:Southern Ocean Category:Oceans Category:Antarctica zh-min-nan:Lâm-ke̍k-iûⁿ ko:남극해 ja:南極海 simple:Southern Ocean th:มหาสมุทรใต้

Meridian (geography)

:This article is about the geographical concept. For other uses of the word, see Meridian. Meridian On the Earth, a meridian is an imaginary north-south line between the North Pole and the South Pole that connects all locations with a given longitude. The position on the meridian is given by the latitude. Each is perpendicular to all circles of latitude at the intersection points. Each is also the same size and is half of a great circle on the Earth's surface. Considering the meridian that passes through Greenwich, England, as establishing the meaning of zero degrees of longitude, or the Prime Meridian, any other meridian is identified by the angle, referenced to the center of the earth as vertex, between where it and the prime meridian cross the equator. As there are 360 degrees in a circle, the meridian on the opposite side of the earth from Greenwich (which forms the other half of a circle with the one through Greenwich) is 180° longitude, and the others lie between 0° and 180° of West longitude in the Western Hemisphere (west of Greenwich) and between 0° and 180° of East longitude in the Eastern Hemisphere (east of Greenwich). You can see the lines of longitude on most maps. The term "meridian" comes from the Latin meridies, meaning "midday"; the sun crosses a given meridian midway between the times of sunrise and sunset on that meridian. The same Latin stem gives rise to the terms A.M. and P.M. used to disambiguate hours of the day when using the 12-hour clock. ----This article originates from Jason Harris' Astroinfo which comes along with KStars, a Desktop Planetarium for Linux/KDE. See http://edu.kde.org/kstars/index.phtml
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Latitude

Latitude, sometimes denoted by the Greek letter φ, gives the location of a place on Earth north or south of the Equator. Latitude is an angular measurement ranging from 0° at the Equator to 90° at the poles (90º N or 90º S). Co-latitude is the complement of latitude. complement showing lines of latitude, which appear straight and horizontal in this projection, but are actually circular with different radii.]]

Lines of latitude

All locations of a given latitude are collectively referred to as a line of latitude or parallel, because they are coplanar, and all such planes are parallel to the Equator. Lines of latitude other than the Equator are approximately small circles on the surface of the Earth; they are not geodesics since the shortest route between two points at the same latitude involves moving farther away from the equator. A specific latitude may then be combined with a specific longitude to give a precise position on the Earth's surface.

Subdivisions

Each degree of latitude is further sub-divided into 60 minutes (one arcminute of latitude is exactly one nautical mile or 1852 metres), each of which divides into 60 seconds. A latitude is thus specified as 13° 19′ 43" N. For high accuracy, the seconds are specified with a decimal fraction. An alternative representation uses degrees and minutes, where parts of a minute are expressed as a decimal fraction, thus: 13° 19.717′ N. Degrees expressed as a decimal number (Decimal Degree notation) is more often used: 13.32861° N. Sometimes, the North/South suffix is replaced by a negative sign for South (-90º for the south pole).

Important latitudes

Latitudes of particular importance are the Tropic of Cancer (latitude 23°27′ north), the Tropic of Capricorn (latitude 23°27′ south), the Arctic Circle (latitude 66°33′ north), and the Antarctic Circle (latitude 66°33′ south). Only at latitudes between the Tropics is it possible for the sun to be at the zenith. Only north of the Arctic Circle or south of the Antarctic Circle is the midnight sun possible.

Effect of latitude

A region's latitude has a great effect on its climate and weather. Latitude more loosely determines tendencies in climate, polar auroras, prevailing winds, and other physical characteristics of geographic locations.

Types of latitude

Because the Earth is slightly flattened by its rotation, cartographers refer to a variety of auxiliary latitudes to precisely adapt spherical projections according to their purpose.

Common "latitude"

- In common usage, "latitude" refers to geodetic or geographic latitude φ and is the angle between the equatorial plane and a line that is normal to the reference spheroid, which approximates the shape of the Earth to account for flattening of the poles and bulging of the equator. The expressions following assume elliptical polar sections with eccentricity e, and that all sections parallel to the equatorial plane are circular. Geographic latitude (with longitude) then provides a Gauss map.

Reduced latitude

- Reduced or parametric latitude β is the latitude of the same radius on the sphere with the same equator. ::

\beta=\arctan\!\left\\,\!

Authalic latitude

- Authalic latitude ξ gives an area-preserving transform to the sphere. :::

\xi=\arcsin\!\left\\,\!

\mbox Q\!\left\=\left|\frac-\frac\ln\!\left\\right|

Rectifying latitude

- Rectifying latitude μ is the surface distance from the equator, scaled so the pole is 90°. Unfortunately, it is an incomplete elliptic integral: ::

\mu=k\int_^\phi\fracdx\,\!

Conformal latitude

- Conformal latitude χ gives an angle-preserving (conformal) transform to the sphere. ::

\chi=2\arctan\!\left\-\frac\,\!

Geocentric latitude

- The geocentric latitude φ_g is the angle between the equatorial plane and a line from the center of the Earth. ::

\phi_g=\arctan\left\\,\!

For other planets such as Mars, geographic and geocentric latitude are called "planetographic" and "planetocentric" latitude, respectively. Most maps of Mars since 2002 use planetocentric coordinates.

Approximate difference from geographic latitude
φ	reduced φ − β	authalic φ − ξ	rectifying φ − μ	conformal φ − χ	geocentric φ − φ_g
0°	0.00′	0.00′	0.00′	0.00′	0.00′
5°	1.01′	1.35′	1.52′	2.02′	2.02′
10°	1.99′	2.66′	2.99′	3.98′	3.98′
15°	2.91′	3.89′	4.37′	5.82′	5.82′
20°	3.75′	5.00′	5.62′	7.48′	7.48′
25°	4.47′	5.96′	6.70′	8.92′	8.92′
30°	5.05′	6.73′	7.57′	10.09′	10.09′
35°	5.48′	7.31′	8.22′	10.95′	10.96′
40°	5.75′	7.66′	8.62′	11.48′	11.49′
45°	5.84′	7.78′	8.76′	11.67′	11.67′
50°	5.75′	7.67′	8.63′	11.50′	11.50′
55°	5.49′	7.32′	8.23′	10.97′	10.98′
60°	5.06′	6.75′	7.59′	10.12′	10.13′
65°	4.48′	5.97′	6.72′	8.95′	8.96′
70°	3.76′	5.01′	5.64′	7.52′	7.52′
75°	2.92′	3.90′	4.39′	5.85′	5.85′
80°	2.00′	2.67′	3.00′	4.00′	4.01′
85°	1.02′	1.35′	1.52′	2.03′	2.03′
90°	0.00′	0.00′	0.00′	0.00′	0.00′

Astronomical latitude

- A more obscure measure of latitude is the astronomical latitude, which is the angle between the equatorial plane and the normal to the geoid (ie a plumb line). It originated as the angle between horizon and pole star.

Latitude and wealth

It is frequently observed that there is a distinct correlation between latitude and the wealth of nations. The continents along the equator, Africa and South America are the poorest. Even within Africa and South America this can be seen as the nations furthest from the equator are wealthier. In Africa the wealthiest nations are the three on the southern tip of the continent, South Africa, Botswana, and Namibia, and the countries of North Africa. Similarly in Latin America Argentina, Chile and Uruguay have long been the wealthiest. Within Asia, Indonesia, located on the equator, is among the poorest. The wealthiest nations of the world with the highest standard of living tend to be those at the northern extreme of areas open to human habitation, Canada, and the Nordic Countries. Within the wealthy continents, and even within large countries wealth increases with distance from the equator. Southern Europe has long been poorer as has the Southern United States. There have been a number of explanations for this phenomenon. The first to describe and try to assess it was the French philosophe Montesquieu who proposed that cold weather means less blood in the extremities, which makes the flesh less elastic; this gives northerners more strength and makes them less able to relax. This forcing of the blood inward, according to Montesquieu also means more flows through the heart, increasing vitality. These findings have been wholly discredited by modern science.

Evolutionary explanations

One explanation is grounded in evolutionary theory. Some have argued that as humans migrated into higher latitudes and encountered colder weather there, the cold weather forced the evolution of higher group intelligence by forcing inhabitants to perform more intellectually demanding tasks, such as building shelter, fires, and clothing, in order to survive (Lynn, 1991). One study that supports this notion was performed by Beals et al. (1984, p. 309), who found a correlation of 0.62 (p=0.00001) between latitude and cranial capacity in samples worldwide and reported that each degree of latitude was associated with an increase of 2.5 cm³ in cranial volume. Researchers such as J. Philippe Rushton have argued that the association of greater brain size with greater latitude is due to the fact that cold weather imposes on its inhabitants more cognitively demanding tasks such as the need to construct shelter, make clothing, and store food.

Non-evolutionary explanations

Another explanation that is still widely held is that modern technologies and institutions were designed primarily in a small area of north western Europe. Thus agricultural techniques, machines, and medicines were designed to suit a temperate climate. These technologies and models readily spread to areas of similar climate, such as North America and Australia. As these areas also became centres of innovation this bias was further enhanced. Vastly less effort has been put into improving tropical agriculture than temperate because of this. Technologies, from automobiles to power lines are designed for colder drier regions and tend to work far worse in the tropics. In simple words, the life in tropics doesn't create a strong natural urge for new technology development since life conditions in terms of basic body needs are comfortable enough. The colder the weather, the more life necessities are required for survival, which creates a strong motivation for ongoing innovative process. To make a comfortable life farther from tropics requires a more advanced technology. But once the life is comfortable enough, the 'innovation belt' is moving further from equator again. Thus, there exists a vicious cycle of technologies being designed for the wealthy, which makes them more wealthy and thus more able to fund technological development. One piece of evidence for this is that the far north has not always been the wealthiest latitude. Until only a few centuries ago, the wealthiest belt stretched from Southern Europe through the Middle East, northern India and southern China. A dramatic shift in technologies beginning with ocean going ships and culminating in the Industrial Revolution saw the most developed belt move north, in Europe, in China, and in the Americas. Northern Russia became a superpower while southern India became impoverished and colonized. Such dramatic changes argue that the current distribution of wealth is not due to immutable factors such as climate or race. Linked to this explanation is that of disease. The tropics are far more prone to devastating diseases due to their temperature that makes life easier on vectors such as insects and rodents. There has long been a malarial belt spanning the globe; this made human life more difficult. Most notably it was almost impossible for most forms of northern livestock to thrive. These problems have been compounded by the wealth of the north: vastly more research money goes into curing the ailments of northerners. Physiologist Jared Diamond, in his Pulitzer Prize-winning work Guns, Germs, and Steel, made the case that the Europe-Asia land mass is particularly favorable for the transition of societies from hunter-gatherer to farming communities. The continent stretches much further along the same lines of latitude than any of the other continents. As it is much easier to transfer a domesticated species along the same latitude than it is to move it to a warmer or colder climate, any species developed at a particular latitude will be transferred across the continent in a relatively short amount of time. Thus the inhabitants of this continent have a built-in advantage in terms of earlier development of farming, and a greater range of plants and animals from which to choose. He also linked this progression to the development of diseases that were later to threaten the inhabitants of other continents. The close association of people in Europe-Asia with their domesticated animals provided a vector for the rapid transmission of diseases. Inhabitants of lands with few domesticated species were never exposed to the same range of diseases, and so, at least on the American continents, succumbed to diseases introduced from Europe.

References

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External links

- [http://www.bcca.org/misc/qiblih/latlong.html Look-up Latitude and Longitude]
- [http://jan.ucc.nau.edu/~cvm/latlon_find_location.html Resources for determining your latitude and longitude]
- [http://geography.about.com/library/howto/htdegrees.htm Convert decimal degrees into degrees, minutes, seconds] - Info about decimal to sexagesimal conversion
- [http://sundials.org/links/local/pages/dd_dms.htm NASS - Convert degrees/minutes/seconds to decimal degrees and vice versa] - JavaScript version
- [http://www.marinewaypoints.com/learn/greatcircle.shtml Distance calculation based on latitude and longitude] - JavaScript version
- [http://www.cia.gov/cia/publications/factbook/reference_maps/pdf/political_world.pdf Zoomable version of the map] (pdf) Category:Navigation Category:Angle ja:緯度 th:ละติจูด

Red Sea

:(Red Sea is also the name of a state in Sudan) Sudan The Red Sea (Arabic البحر الأحمر Baḥr al-Aḥmar, al-Baḥru l-’Aḥmar; Hebrew ים סוף Yam Suf; Tigrigna ቀይሕ ባሕሪ QeyH baHri) is a gulf or basin of the Indian Ocean between Africa and Asia. The connection to the ocean is in the south through the Bab el Mandeb sound and the Gulf of Aden. In the north is the Sinai Peninsula, the Gulf of Aqaba and the Gulf of Suez (leading to the Suez Canal). The sea is roughly 1900 km long and at its widest is over 300 km. The sea floor has a maximum depth of 2,500 m in the central median trench and an average depth of 500 m, but it also has extensive shallow shelves, noted for their marine life and corals. The sea has a surface area of roughly 438,000 or 450,000 km². The sea is the habitat of over 1000 invertebrate species and 200 soft and hard corals. The sea occupies a part of the Great Rift Valley. The Red Sea is the world's most northern tropical sea.

Name

The sea was called the "Arabian Gulf" in most European sources up to the 20th century. This was derived from older Greek sources. Herodotus, Straban and Ptolemy all call the waterway "Arabicus Sinus", while reserving the term "Sea of Erythrias" (Red Sea) for the waters around the southern Arabian Peninsula, now known as Indian Ocean. The name of the sea does not indicate the colour of the water. It may signify the seasonal blooms of the red-coloured cyanobacteria Trichodesmium erythraeum near the water surface. Some suggest that it refers to the mineral-rich red mountains nearby which are called "הרי אדום" (harei edom). Edom, meaning "ruddy complexion", is also an alternative Hebrew name for the red-faced biblical character Esau (brother of Jacob), and the nation descended from him, the Edomites, which in turn provides yet another possible origin for Red Sea. There is also speculation that the name Red Sea came from a mistranslation of what should have been the Reed Sea in the Biblical story of the Exodus. The Sea of Reeds (in Hebrew Yâm-Sûph) is often mistranslated as the "Red Sea". One hypothesis is the name comes from the Himarites, a local group whose own name means "red." Another theory favored by some modern scholars is the name "red" is referring to the direction "south," the same way the Black Sea's name may refer to "north." The basis of this theory is that some Asiatic languages used color words to refer to points on the compass.

Physical properties

Black Sea Surface water temperatures remain relatively constant at 21-25°C and temperature and visibility remain good to around 200 m, but the sea is known for its strong winds and tricky local currents. The sea was created by the division of Africa from the Arabian peninsula, a movement which began around 30 million years ago. The sea is still widening and there are small volcanic features in the deeper parts, it is considered that the sea will become an ocean in time (as proposed in the model of Tuzo Wilson). Sometimes during the Tertiary period the Bab el Mandeb was closed and the Red Sea was an empty hot dry salt-floored sink.

Tourism

The sea is known for its spectacular dive sites such as Ras Mohammed, Elphinstone, The Brothers and Rocky Island in Egypt, and less known sites in Sudan such as Sanganeb, Abington, Angarosh and Shaab Rumi (see photo above). The Red Sea was "discovered" as a diving destination by Hans Hass in the 1950s, and by Jacques-Yves Cousteau later.

Bordering countries

Bordering countries are:
- Northern shore:
- Egypt
- Israel
- Jordan
- Western shore:
- Sudan
- Egypt
- Eastern shore:
- Saudi Arabia
- Yemen
- Southern shore:
- Djibouti
- Eritrea
- Somalia

Towns and cities

Towns and cities on the Red Sea coast include: Assab, Massawa, Hala'ib, Port Sudan, Port Safaga, Hurghada, El Suweis, Sharm el Sheikh, Eilat, Aqaba, Dahab, Jeddah, Al Hudaydah, Marsa Alam.

Island

in New York, USA]] An island or isle is any piece of land that is completely surrounded by water. Very small islands are called islets. Although seldom adhered to, it is also proper to call an emergent land feature on an atoll an islet, since an atoll is a type of island. A key or cay is also another name for a relatively small island. Groups of related islands are called archipelagos. There are three main types of islands: continental islands, river islands, and volcanic islands. There are also som

Indian Ocean

Environment

Climate

Hydrology

Economy

History

Data

References

External links

Indian Ocean (band)

Beginnings - Indian Ocean

Desert Rain

Kandisa

Jhini and after

Members

Susmit Sen (acoustic guitar)

Asheem Chakravarty (tabla, percussions & vocals)

Amit Kilam (drums)

Rahul Ram (bass guitar and vocals)

Discography

Filmography

External links

See Also

Asia

Etymology

Geographical Regions

North Asia

Central Asia

East Asia (or Far East)

Southeast Asia

South Asia (or Indian Subcontinent)

Southwest Asia (or West Asia)

Economy

Natural resources

Manufacturing

Financial and other services

Early history

Population density

Religion

See also

References

External links

Indian subcontinent

Nomenclature

Geography

Other subregions of Asia

External links

Arabia

See also

Malay Peninsula

See also

Sunda Islands

Sundanese

See also

Southern Ocean

Geography

Climate

Terrain

Elevation extremes

Natural resources

Natural hazards

Environment

Current issues

International agreements

Economy overview

Ports and harbors

Transportation note

See also

External links

Meridian (geography)

Latitude

Lines of latitude

Subdivisions

Important latitudes

Effect of latitude

Types of latitude

Common "latitude"

Reduced latitude

Authalic latitude

Rectifying latitude