Changes in the glacier cover of Severnaya Zemlya in the twentieth century1
| Autor: | D. Yu. Bol'shiyanov, L. Ya. Pinchuk, L. S. Govorukha, V. S. Zarkhidze, R. I. Yunak |
|---|---|
| Rok vydání: | 1987 |
| Předmět: |
Glacier ice accumulation
geography geography.geographical_feature_category Dome Geography Planning and Development Rock glacier Glacier Glacier morphology Snow Glacier mass balance Climatology General Earth and Planetary Sciences Surge General Agricultural and Biological Sciences Geology General Environmental Science |
| Zdroj: | Polar Geography and Geology. 11:300-305 |
| ISSN: | 0273-8457 |
| DOI: | 10.1080/10889378709377340 |
| Popis: | This evaluation of changes in the dimensions of the Severnaya Zemlya glaciers is based on an interpretation of cartographic data from the first aerial surveys made in 1931, and of observations conducted between 1952 and 1974. Comparison of the maps has revealed a general retreat of the margins of the ice domes and the disappearance of some glaciers since 1952. The summary data testify to the fact that the general shrinkage has affected glaciers of all morphological types. The glaciers of Bol'shevik Island experienced the greatest shrinkage, with the margins of some ice domes retreating 2–2.5 km (Fig. 1). The degradation of the glaciers is confirmed by the data on glacier mass balance. These have been derived from an eight‐year series of observations (1974–1981) on the Vavilov Dome and calculated from correlations of snow accumulations with mean winter air temperature at Cape Chelyuskin for the period 1933–1980. According to these calculations the glaciers of Severnaya Zemlya are annually losing 2... |
| Databáze: | OpenAIRE |
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