globalchange  > 过去全球变化的重建
DOI: 10.1016/j.quascirev.2014.09.006
Scopus记录号: 2-s2.0-84907808919
论文题名:
The disappearance of glaciers in the Tien Shan Mountains in Central Asia at the end of Pleistocene
作者: Takeuchi N.; Fujita K.; Aizen V.B.; Narama C.; Yokoyama Y.; Okamoto S.; Naoki K.; Kubota J.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 103
起始页码: 26
结束页码: 33
语种: 英语
英文关键词: Bølling-Allerød ; Deglaciation ; Glaciers ; Holocene ; Ice core
Scopus关键词: Central Asia ; Deglaciations ; Holocenes ; Ice core ; Pleistocene ; Glaciers ; glacier ; ice core ; last deglaciation ; Last Glacial Maximum ; Pleistocene ; Tien Shan
英文摘要: Glaciers in Central Asia are among the largest ice masses in the Eurasian continent and have supplied vital water to local inhabitants for thousands of years. The glaciers in this region are generally believed to be remnants of the last deglaciation, however, glacier variability in the central Asian mountains since the Last Glacial Maximum (LGM) has not been well documented. Here, we report an 86.87m-deep ice core record drilled on an ice cap in the Tien Shan Mountains of Central Asia. Radiocarbon dating of organic soil from the bottom of the ice-core borehole showed that the age of the soil was 12,656 - 12,434calyears before present, coincident with the beginning of the Younger Dryas cold period (YD). This result indicates that the ice cap did not exist in the Bølling-Allerød period (BA), which was the warm period before the YD, and that the BA climate was significantly warmer than at present. It also indicates that the ice cap has never entirely disappeared in any warm periods throughout the Holocene. We estimated that during the BA its extent was 43% or less of the present glacier coverage in the mountains. Our results suggest that this region at the end of Pleistocene was considerably warmer than at present, and that most of the present glaciers in this region are not relics of the Last Glacial period, but are composed of ice formed during the YD and Holocene. © 2014 The Authors.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60138
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作者单位: Department of Earth Sciences, Graduate School of Science, Chiba University, Chiba, Japan; Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan; College of Science, University of Idaho, Moscow, ID, United States; Department of Environmental Science, Niigata University, Niigata, Japan; Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, Japan; Tokai University Research and Information Center, Tokyo, Japan; Research Institute for Humanity and Nature, Kyoto, Japan

Recommended Citation:
Takeuchi N.,Fujita K.,Aizen V.B.,et al. The disappearance of glaciers in the Tien Shan Mountains in Central Asia at the end of Pleistocene[J]. Quaternary Science Reviews,2014-01-01,103
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