Glacier mass balance over the central Nyaincientanglha Range during recent decades derived from remote-sensing data

被引：42
作者：
Wu, Kunpeng [1 ,2 ,3 ]
Liu, Shiyin [2 ,3 ]
Jiang, Zongli [4 ]
Xu, Junli [5 ]
Wei, Junfeng [4 ]
机构：
[1] Anqing Normal Univ, Sch Resources & Environm, Anqing 246133, Peoples R China
[2] Yunnan Univ, Inst Int Rivers & Ecosecur, Kunming 650091, Yunnan, Peoples R China
[3] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China
[4] Hunan Univ Sci & Technol, Dept Geog, Xiangtan 411201, Peoples R China
[5] Yancheng Teachers Univ, Dept Surveying & Mapping, Yancheng 224007, Peoples R China
来源：
JOURNAL OF GLACIOLOGY | 2019年 / 65卷 / 251期
基金：
中国国家自然科学基金;
关键词：
debris-covered glaciers; glacier delineation; glacier mass balance; remote sensing; DEBRIS-COVERED GLACIERS; WESTERN NYAINQENTANGLHA RANGE; DIGITAL ELEVATION MODELS; KANGRI-KARPO MOUNTAINS; TIBETAN PLATEAU; TANDEM-X; TOPOGRAPHY MISSION; HISTORICAL MAPS; INVENTORY DATA; SHUTTLE RADAR;
D O I：
10.1017/jog.2019.20
中图分类号：
P9 [自然地理学];
学科分类号：
0705 ; 070501 ;
摘要：
To obtain information on changes in glacier mass balance in the central Nyaincientanglha Range, a comprehensive study was carried out based on digital-elevation models derived from the 1968 topographic maps, the Shuttle Radar Topography Mission DEM (2000) and TerraSAR-X/ TanDEM-X (2013). Glacier area changes between 1968 and 2016 were derived from topographic maps and Landsat OLI images. This showed the area contained 715 glaciers, with an area of 1713.42 +/- 51.82 km(2), in 2016. Ice cover has been shrinking by 0.68 +/- 0.05% a(-1) since 1968. The glacier area covered by debris accounted for 11.9% of the total and decreased in the SE-NW directions. Using digital elevation model differencing and differential synthetic aperture radar interferometry, a significant mass loss of 0.46 +/- 0.10 m w.e. a(-1) has been recorded since 1968; mass losses accelerated from 0.42 +/- 0.20 m w.e. a(-1) to 0.60 +/- 0.20 m w.e. a(-1) between 1968-2000 and 2000-2013, with thinning noticeably greater on the debris-covered ice than the clean ice. Surface-elevation changes can be influenced by ice cliffs, as well as debris cover and land- or lake-terminating glaciers. Changes showed spatial and temporal heterogeneity and a substantial correlation with climate warming and decreased precipitation.
引用
收藏
页码：422 / 439
页数：18
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