DOI: 10.5194/tc-7-1623-2013
Scopus记录号: 2-s2.0-84886529380
论文题名: Recent mass balance of the purogangri ice cap, central tibetan plateau, by means of differential x-band sar interferometry
作者: Neckel N ; , Braun A ; , Kropáček J ; , Hochschild V
刊名: Cryosphere
ISSN: 19940416
出版年: 2013
卷: 7, 期: 5 起始页码: 1623
结束页码: 1633
语种: 英语
英文关键词: 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
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). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/74931
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Institute of Geography, University of Tübingen, Rümelinstr. 19-23, 72070 Tübingen, Germany
Recommended Citation:
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]. Cryosphere,2013-01-01,7(5)