@Indian Ocean:Geography
Location: body of water between Africa, Antarctica, Asia, and
Australia
Geographic coordinates: 30 00 S, 80 00 E
Map references: World
Area: total : 73.6 million sq km note: includes Arabian Sea, Bass Straight, Bay of Bengal, Great Australian Bight, Gulf of Oman, Persian Gulf, Red Sea, Strait of Malacca, and other tributary water bodies
Area - comparative: slightly less than eight times the size of the US; third-largest ocean (after the Pacific Ocean and Atlantic Ocean, but larger than the Arctic Ocean)
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 Ninety East Ridge
Elevation extremes: lowest point: Java Trench -7,258 m highest point: sea level 0 m