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The results of mass balance observations of the ice dome and measurements of the active layer thickness on the Fildes Peninsula, King George (Waterloo) Island, Western Antarctica are presented for the period of 2007 to 2019. The dynamics of the main meteorological parameters affecting the active layer thickness is determined. The numerical experiments based on the mathematical model are performed to determine the effects of various parameters on the active layer thickness. The calculated and measured values of the active layer thickness are compared. The thermal instability of permafrost in the study area in some years with high (above the means) summer air temperature is demonstrated. The climate cooling which started in the region in the recent years has increased the number of years with the positive ice mass balance. However, the positive ice mass balance has not yet become a dominant factor against a background of the negative balance in the previous years. 相似文献
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A relationship is established between many-year variations of the total budget of Spitsbergen glacier mass and variations of the solar radiation reaching the upper atmospheric boundary in the Northern Hemisphere per year. A regression equation was used to evaluate the total mass budget of glaciers Austre Broggebreen and Midre Lovenbreen over period from 1850 to 2050. The trend in the decrease of ice resources in Spitsbergen is show to be related with an increase in the internlatitudinal heat exchange and the greenhouse effect because of the accumulation of heat from incoming solar radiation. 相似文献
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Doklady Earth Sciences - The results of investigations of the landforms and sediments in the marginal zone of the Aldegonda Glacier are presented. As a result of the geomorphological analysis of... 相似文献
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