气候变化领域集成服务门户(CCPortal): Glacier status during the period 1973-2014 in the Hunza Basin, Western Karakoram

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DOI	10.1016/j.quaint.2016.08.029
	Glacier status during the period 1973-2014 in the Hunza Basin, Western Karakoram
	Qureshi, Muhammad Ateeq; Yi, Chaolu; Xu, Xiangke; Li, Yingkui
通讯作者	Yi, CL (通讯作者)
发表日期	2017
ISSN	1040-6182
EISSN	1873-4553
起始页码	125
结束页码	136
卷号	444
英文摘要	Glacier changes in the Karakoram have shown a complex pattern since the recent decades with the coexistence of advancing, retreating, and stable glaciers, but the mechanisms driving these changes remain, for the most part, unclear. We examined the changes in glacier length, area, and elevation in the Hunza Basin of the upper Indus River region, western Karakoram, using CORONA remote sensing data, Landsat MSS/TM/OLI imagery, SRTM digital elevation model (DEM), and GLAS/ICESat altimeter data. We delineated 108 glaciers within the study area. The total area of these glaciers decreased 28.86 km(2), or 1.36%, from 2115.48 km(2) in 1973-2086.62 km(2) in 2014. The most significant reduction in ice coverage occurred between 1992 and 1998, when glaciers retreated on average at a rate of -2.97 km(2)/yr (0.85% of the total coverage measured in the 1970s). In contrast, many glaciers advanced from 2008 to 2014 and glacial coverage increased by 0.19 +/- 0.00 km(2). In comparison to fast retreating glaciers in the Hindukush and the Trans-Himalayan regions, the glaciers in the Hunza Basin are relatively stable. The topographical characteristics and the size of the glaciers have direct impacts on glacial changes in the Hunza Basin. Specifically, significant changes occurred mainly below 5500 m above sea level, glaciers retreated more extensively on steep slopes than on gentle slopes, and small glaciers retreated relatively faster than large glaciers. The overall pattern of glacial retreat is related to the warming trend in summer temperature, whereas the relative stability of glaciers in the Hunza Basin, as well as their recent advance (2008-2014), is likely driven by increasing autumn and winter precipitation. (C) 2016 Elsevier Ltd and INQUA. All rights reserved.
关键词	ICESAT ALTIMETRY DATA UPPER INDUS BASIN TIBETAN PLATEAU HIMALAYAN GLACIERS RIVER-BASIN PAKISTAN MOUNTAIN
英文关键词	Glacial changes; Remote sensing; GIS; Precipitation; Temperature
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000406754700012
来源期刊	QUATERNARY INTERNATIONAL
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258990
推荐引用方式 GB/T 7714	Qureshi, Muhammad Ateeq,Yi, Chaolu,Xu, Xiangke,et al. Glacier status during the period 1973-2014 in the Hunza Basin, Western Karakoram[J]. 中国科学院青藏高原研究所,2017,444.
APA	Qureshi, Muhammad Ateeq,Yi, Chaolu,Xu, Xiangke,&Li, Yingkui.(2017).Glacier status during the period 1973-2014 in the Hunza Basin, Western Karakoram.QUATERNARY INTERNATIONAL,444.
MLA	Qureshi, Muhammad Ateeq,et al."Glacier status during the period 1973-2014 in the Hunza Basin, Western Karakoram".QUATERNARY INTERNATIONAL 444(2017).