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007 cr |
008 200406|2012 ru s a eng d
035 _ato000708793
040 _aRU-ToGU
_brus
_cRU-ToGU
100 1 _aGillespie, Alan R.
_9502130
245 1 0 _aQuaternary glaciation in Northern Central Asia
_cA. R. Gillespie
246 1 1 _aЧетвертичное оледенение в северной части Центральной Азии
504 _aБиблиогр.: 14 назв.
520 3 _aIn Central Asia, Pleistocene glaciations occurred in two climatic regimes: arid regions where annual precipitation was <150 mm, and more humid regions where it was greater. In the former, the precipitation controlled the ELA and size of the glaciers; in the latter it was temperature. Temperatures are less variable spatially than precipitation, and therefore the glaciers of the arid regimes have a wide range of ELAs. This leads to highly local, idiosyncratic glacial chronologies because of local rain-shadow effects as well as nuances in the pattern of moisture distribution by storms affected by topography and the jet stream. However, southern Siberia appears to have followed the global pattern of glacial advances, while the complexities are largely farther south.Mountain glaciers in arid Central Asia are important in and of themselves because their meltwater is necessary to sustain some communities through dry seasons when rainfall is slight. Furthermore, glaciers are commonly associated with ice-dammed lakes that can rupture to release dangerous outburst floods downstream. However, because of their widespread distribution in Central Asia, the most significant role for glaciers may be as a warning system for climate change and a signal for the degradation of permafrost and consequent release of greenhouse CH4 into the atmosphere.
653 _aчетвертичное оледенение
653 _aпалеоклиматические условия
653 _aпалеогляциологические показатели
653 _aэкологический прогноз
653 _aЦентральная Азия
655 4 _aстатьи в журналах
_9745982
773 0 _tВестник Томского государственного университета. Биология
_d2012
_g№ 2. С. 194-209
_x1998-8591
_w0210-37860
852 4 _aRU-ToGU
856 4 _uhttp://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000708793
908 _aстатья
999 _c465895