The role of sea ice in coastal and bottom dynamics in the Pechora Sea |
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Authors: | SA Ogorodov AM Kamalov GK Zubakin Yu P. Gudoshnikov |
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Affiliation: | (1) Faculty of Geography, M.V. Lomonosov Moscow State University, 119992 Moscow, Russia;(2) Arctic and Antarctic Research Institute, Bering street-38, 199397 St.-Petersburg, Russia |
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Abstract: | This article deals with the morpho- and lithodynamic role of ice in shaping the Arctic coasts. Taking the Pechora Sea as an example, the direct and indirect impact of ice on the sea floor and shores is described. Active gouging by ice floes, ice-rafting of sedimentary material, formation of strudel scour depressions and frozen rocks on shallows are all direct impacts. The indirect impact of ice that arrests the coastal zone for most of the year is a considerable reduction of the overall energy of waves and currents. Based on the performed analysis, we plot a schematic zonation of the Pechora Sea according to the probable impact of ice on the shores and seafloor. |
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