Laptev Sea - Geography

Geography

The mighty Lena River, with its great delta, is the biggest river flowing into the Laptev Sea, and is the second largest river in the Russian Arctic after Yenisei. Other important rivers include the Khatanga, the Anabar, the Olenyok or Olenek, the Omoloy and the Yana.

The sea shores are winding and form gulfs and bays of various sizes. The coastal landscape is also diverse, with small mountains near the sea in places. The main gulfs of the Laptev Sea coast are the Khatanga Gulf, the Olenyok Gulf, the Buor-Khaya Gulf and the Yana Bay.

There are several dozens of islands with the total area of 3,784 km2 (1,461 sq mi), mostly in the western part of the sea and in the river deltas. Storms and currents due to the ice thawing significantly erode the islands, so the Semenovsky and Vasilievsky islands (74°12"N, 133°E) which were discovered in 1815 have already disappeared. The most significant groups of islands are Severnaya Zemlya, Komsomolskaya Pravda, Vilkitsky and Faddey, and the largest individual islands are Bolshoy Begichev (1764 км²), Belkovsky (500 км²), Maly Taymyr (250 км²), Stolbovoy (170 км²), Starokadomsky (110 км²), and Peschanyy (17 km²). (see Islands of the Laptev Sea)

More than half of the sea (53%) rests on a continental shelf with the average depths below 50 meters (160 ft), and the areas south from 76°N are shallower than 25 m. In the northern part, the sea bottom sharply drops to the ocean floor with the depth of the order of 1 kilometer (0.62 mi) (22% of the sea area). There it is covered with silt, which is mixed with ice in the shallow areas.

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