Journal
GEOPHYSICAL RESEARCH LETTERS
Volume 41, Issue 17, Pages 6265-6273Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1002/2014GL060444
Keywords
glaciolacustrine sediment; westernmost Tibetan Plateau; glacier variation; Kalakuli Lake; late Holocene; temperature
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Funding
- China Global Change Research Program [2012CB956101]
- National Natural Science Foundation of China [41072131]
- German Academic Exchange Service (DAAD)
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Late Holocene glacier variations in westernmost Tibetan Plateau were studied based on the analysis of grain size, magnetic susceptibility, and elements from an 8.3m long distal glaciolacustrine sediment core of Kalakuli Lake. Our results show that there are four glacier expansion episodes occurring in 4200-3700calibrated years (cal years) B.P., 2950-2300cal years B.P., 1700-1070cal years B.P., and 570-100cal years B.P. and four glacier retreat periods of 3700-2950cal years B.P., 2300-1700cal years B.P., 1070-570cal years B.P., and 50cal years B.P.-present. The four glacier expansion episodes are generally in agreement with the glacier activities indicted by the moraines at Muztagh Ata and Kongur Shan, as well as with the late Holocene ice-rafting events in the North Atlantic. Over the last 2000years, our reconstructed glacier variations are in temporal agreement with reconstructed temperature from China and the Northern Hemisphere, indicating that glacier variations at centennial time scales are very sensitive to temperature in western Tibetan Plateau.
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