Arid
DOI10.3189/2014AoG66A031
Topographic and geometric controls on glacier changes in the central Tien Shan, China, since the Little Ice Age
Li, Yanan; Li, Yingkui
通讯作者Li, Yanan
来源期刊ANNALS OF GLACIOLOGY
ISSN0260-3055
EISSN1727-5644
出版年2014
卷号55期号:66页码:177-186
英文摘要

This paper examines the topographic and geometric controls on glacier changes in area and equilibrium-line altitude (ELA) in the central Tien Shan, China, since the little Ice Age (LA). We delineate the extents of 487 modern glaciers and their corresponding maximum LIA glacial advances using satellite imagery in Google Earth, and analyze the relationships between the magnitude of glacier changes and a set of local topographic/geometric factors including glacier area, slope, aspect, shape, hypsometry and mean elevation. Our results show that: (1) glacier area decreased from 460.2 km(2) during the LIA to 265.6 km(2) in the 2000s (a loss of 42.3%), with an average ELA increase of similar to 100 m; (2) relative area changes of glaciers are strongly affected by two of these local factors (glacier area and mean elevation); and (3) ELA change does not show a strong relationship with local factors, suggesting that it may be controlled mainly by climatic factors. This study provides important insights into the local controls on glacier changes at the centennial timescale, which are of critical importance to assess future glacier changes in this arid and semi-arid region.


英文关键词climate change geomorphology glacial geomorphology glacier mapping remote sensing
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000336010200022
WOS关键词EQUILIBRIUM-LINE ALTITUDES ; URUMQI RIVER ; CLIMATE-CHANGE ; GOOGLE EARTH ; CENTRAL-ASIA ; TIAN-SHAN ; MOUNTAIN GLACIERS ; HISTORICAL DATA ; FLUCTUATIONS ; RETREAT
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/180669
作者单位Univ Tennessee, Dept Geog, Knoxville, TN 37996 USA
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Li, Yanan,Li, Yingkui. Topographic and geometric controls on glacier changes in the central Tien Shan, China, since the Little Ice Age[J],2014,55(66):177-186.
APA Li, Yanan,&Li, Yingkui.(2014).Topographic and geometric controls on glacier changes in the central Tien Shan, China, since the Little Ice Age.ANNALS OF GLACIOLOGY,55(66),177-186.
MLA Li, Yanan,et al."Topographic and geometric controls on glacier changes in the central Tien Shan, China, since the Little Ice Age".ANNALS OF GLACIOLOGY 55.66(2014):177-186.
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