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Caspian Sea is a latitudinally extended basin similar
to the Latin letter "S" that is located in the area limited by 47 17
North latitude and 36 33 southern latitude coordinates. Its latitudinal
length approximates 1200km, average width measures 310km with maximum
and minimum width values 435km and 195km respectively. Due to recurrent
sea level fluctuation its offshore area and the amount of water masses
are also variable. Currently Caspian Sea level measures 26.75m below the
world ocean level. Caspian offshore area at its current sea level
position amounts to 392,600 sq km with the amount of water volume
measured 78,648 cu km, and this volume covers 44% of the overall amount
of lacustrine water all over the world. Caspian Sea maximum depth
measures 1025m and, in this context, it is comparable with such ones as
the Black sea, Baltic Sea, and Yellow sea, and deeper than Adriatic,
Eagean Sea, Tirren, Sulu and other seas.|
Caspian Sea drainage area amounts to 3.1-3.5th. sq km extending over 2500km from the north to the south and up to 1000km from east to west that covers 10% of the world's closed drainage areas. The following 9 country areas entirely or partially are included in its drainage area: Azerbaijan, Kazakhstan, Armenia, Iran, Georgia, Uzbekistan, Russia, Turkey and Turkmenistan.
Due to tremendously large and closed type drainage area Caspian Sea could be referred to as a Global-scale climate identifier.
Due to geomorphology setting and physiographic conditions the Caspian Sea is divided into three different sectors: the North, Middle and the South sectors.
Both imaginable lines extended across the Caspian Sea from Chechen Peninsula to the Tub-Karagan spit, and another one extended from Chilov Island to Hasangulu spit, are referred to as the border lines between its northern and middle, as well as between its middle and southern sectors, respectively. Both Gulali shoal that begins from Tub-Karagan Peninsula and further on the Mangishlag sill extended through the shallow water (10m deep) from Chechen Peninsula serve as the natural border dividing the North and Middle Caspian offshore areas. Middle and South Caspian sectors are divided from each other through submarine elevation extended between Absheron Peninsula and Cheleken Peninsula, known as Absheron sill. Spatial coverage proportion of the North, Middle and South Caspian sectors amounts to 25%, 36% and 39%, respectively. Water column maximum depths within the North, Middle and South Caspian sectors amount to 25m, 788m and 1025m, that averages as 4.4m, 192m and 345m, respectively.
|Category: NATURE | Added by: shamsi_84 (10.05.2011)|