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The Indian Ocean is the third-largest of the world's five oceanic divisions, covering 70,560,000 km 2 (27,240,000 sq mi) or approximately 20% of the water area of Earth's surface. [4] It is bounded by Asia to the north, Africa to the west and Australia to the east.
Further expeditions (some aerial) in 2004 and 2005 evaluated the effects of the 2004 Indian Ocean tsunami, which caused massive tectonic changes to the island: it was enlarged by a merger with nearby small islands, and the sea floor was raised by about 1.5 m (4 ft 11 in), exposing the surrounding coral reefs to air and destroying the shallow ...
Although the impact of tsunamis is limited to coastal areas, their destructive power can be enormous, and they can affect entire ocean basins. The 2004 Indian Ocean tsunami was among the deadliest natural disasters in human history, with at least 230,000 people killed or missing in 14 countries bordering the Indian Ocean.
Thursday marks the 20 th anniversary of the 2004 Indian Ocean tsunami, one of the deadliest natural disasters in modern history. The Boxing Day quake was one of the largest ever recorded.
The 2004 Indian Ocean earthquake (moment magnitude 9.1–9.3) [44] triggered a series of tsunamis on 26 December 2004 that devastated coastlines surrounding the Indian Ocean, killing an estimated 227,898 people (167,540 in Indonesia alone), making it the deadliest tsunami and one of the deadliest natural disasters in recorded history.
The most intense tropical cyclone in the South-West Indian Ocean was Cyclone Gafilo. By 10-minute sustained wind speed, the strongest tropical cyclone in the South-West Indian Ocean was Cyclone Fantala. Storms with an intensity of 920 hPa (27.17 inHg) or less are listed. Storm information was less reliably documented and recorded before 1985. [6]
The Indian Ocean Geoid Low (IOGL) is a gravity anomaly in the Indian Ocean. A circular region in the Earth's geoid, situated just south of the Indian peninsula, it is the Earth's largest gravity anomaly. [1] [2] It forms a depression in the sea level covering an area of about 3 million km 2 (1.2 million sq mi), almost the size of India itself.
The Indian Ocean raid, also known as Operation C [2] or Battle of Ceylon in Japanese, was a naval sortie carried out by the Imperial Japanese Navy (IJN) from 31 March to 10 April 1942. Japanese aircraft carriers under Admiral Chūichi Nagumo struck Allied shipping and naval bases around British Ceylon , but failed to locate and destroy the bulk ...