气候变化领域集成服务门户(CCPortal): Recent mass balance of the purogangri ice cap, central tibetan plateau, by means of differential x-band sar interferometry

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DOI	10.5194/tc-7-1623-2013
	Recent mass balance of the purogangri ice cap, central tibetan plateau, by means of differential x-band sar interferometry
	Neckel N.; Braun A.; Kropáček J.; Hochschild V.
发表日期	2013
ISSN	19940416
卷号	7 期号:5
英文摘要	Due to their remoteness, altitude and harsh climatic conditions, little is known about the glaciological parameters of ice caps on the Tibetan Plateau. This study presents a geodetic mass balance estimate of the Purogangri Ice Cap, Tibet's largest ice field between 2000 and 2012. We utilized data from the actual TerraSAR-X mission and its add-on for digital elevation measurements and compared it with elevation data from the Shuttle Radar Topography Mission. The employed data sets are ideal for this approach as both data sets were acquired at X-band at nearly the same time of the year and are available at a fine grid spacing. In order to derive surface elevation changes we employed two different methods. The first method is based on differential synthetic radar interferometry while the second method uses common DEM differencing. Both approaches revealed a slightly negative mass budget of-44 ± 15 and-38 ± 23 mm w.eq. a-1 (millimeter water equivalent) respectively. A slightly negative trend of-0.15 ± 0.01 km2 a-1 in glacier extent was found for the same time period employing a time series of Landsat data. Overall, our results show an almost balanced mass budget for the studied time period. Additionally, we detected one continuously advancing glacier tongue in the eastern part of the ice cap. © 2013 Author(s).
学科领域	cryosphere; data set; digital elevation model; glacier dynamics; glaciology; ice cap; ice field; interferometry; Landsat; mass balance; satellite data; TerraSAR-X; China; Qinghai-Xizang Plateau
语种	英语
scopus关键词	cryosphere; data set; digital elevation model; glacier dynamics; glaciology; ice cap; ice field; interferometry; Landsat; mass balance; satellite data; TerraSAR-X; China; Qinghai-Xizang Plateau
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120241
作者单位	Institute of Geography, University of Tübingen, Rümelinstr. 19-23, 72070 Tübingen, Germany
推荐引用方式 GB/T 7714	Neckel N.,Braun A.,Kropáček J.,et al. Recent mass balance of the purogangri ice cap, central tibetan plateau, by means of differential x-band sar interferometry[J],2013,7(5).
APA	Neckel N.,Braun A.,Kropáček J.,&Hochschild V..(2013).Recent mass balance of the purogangri ice cap, central tibetan plateau, by means of differential x-band sar interferometry.Cryosphere,7(5).
MLA	Neckel N.,et al."Recent mass balance of the purogangri ice cap, central tibetan plateau, by means of differential x-band sar interferometry".Cryosphere 7.5(2013).