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EVIDENCE IN FAVOR OF THAT OVER THE PLEISTOCENE CRYODIVERSITY IN NORTHWESTERN SIBERIA DEVELOPED AS INTERACTION OF PERMAFROST AND MOUNTAIN GLACIERS BUT NOT OF ICE SHEETS
Session: Geocryology II / Géocryologie II
Vladimir Sheinkman, Tyumen State and Gas University; Earth's Cryosphere Institute (Russia)
Vladimir Melnikov, Tyumen State and Gas University (Russia)
During the Quaternary, permafrost in Northwestern Siberia fluctuated in size but always occupied a vast space. Nevertheless, some researchers suppose ice sheets covering that terrain, though to explain their combined development with permafrost is impossible. They must transform their frozen bed, whereas the latter occur in the fair preservation. The point is that study of glaciation in Siberia began to carry out on the base of the Alpine model suitable to explain forming the sheets in Europe moistened from the Atlantic; however it is not suitable in Siberia where cold and dry environments prevailed over the Quaternary. It made conditional on the particular glaciers interacted with permafrost. They become a new element of cryodiversity (a set of objects and phenomena produced by cold), and differ from those considered as of the Alpine glaciation model, and obtain properties which are more characteristic for permafrost objects, than for the Alpine-type glaciers.
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