CASPIAN SEA i. GEOGRAPHY Caspian geography and anthropology
CASPIAN SEA i. GEOGRAPHY
The Caspian “sea” consists of three distinct basins, each characterized by different features. hese differences are reflected in the levels of salinity.
CASPIAN SEA, actually a lake, the largest in the world (estimated surface area in 1986: 378,400 km², volume 78,600 km³; approx. between lat 37° and 47° N, long 46° and 54° E); it is bounded on the south by Persia.
I. Morphology and hydrology.
The Caspian “sea” consists of three distinct basins, each characterized by different features. The northern basin (91,942 km2) is actually a shallow expanse of water, which never reaches a depth of more than 25 m and is less than 5 m deep over two-thirds of its area. It accounts for nearly a quarter of the total surface area of the lake but only 0.5 percent of the volume. The central and southern basins are deep depressions. The central basin, with a surface area of 137,812 km2, a maximum depth of 788 m, and an average depth of 192 m, contains 33.9 percent of the total volume of water; the southern basin, with a surface area of 148,646 km2, a maximum depth of 1,025 m and an average depth of 345 m, contains 65.6 percent of the volume.