气候变化领域集成服务门户(CCPortal): Glacier Mass Balance in the Nyainqentanglha Mountains between 2000 and 2017 Retrieved from ZiYuan-3 Stereo Images and the SRTM DEM

CCPortal

DOI	10.3390/rs12050864
	Glacier Mass Balance in the Nyainqentanglha Mountains between 2000 and 2017 Retrieved from ZiYuan-3 Stereo Images and the SRTM DEM
	Ren, Shaoting; Menenti, Massimo; Jia, Li; Zhang, Jing; Zhang, Jingxiao; Li, Xin
通讯作者	Jia, L (通讯作者)
发表日期	2020
EISSN	2072-4292
卷号	12 期号:5
英文摘要	Mountain glaciers are excellent indicators of climate change and have an important role in the terrestrial water cycle and food security in many parts of the world. Glaciers are the major water source of rivers and lakes in the Nyainqentanglha Mountains (NM) region, where the glacier area has the second largest extent on the Tibetan Plateau. The potential of the high spatial resolution ZiYuan-3 (ZY-3) Three-Line-Array (TLA) stereo images to retrieve glacier mass balance has not been sufficiently explored. In this study, we optimized the procedure to extract a Digital Elevation Model (DEM) from ZY-3 TLA stereo images and estimated the geodetic mass balance of representative glaciers in the two typical areas of the NM using ZY-3 DEMs and the C-band Shuttle Radar Topography Mission (SRTM) DEM in three periods, i.e., 2000-2013, 2013-2017 and 2000-2017. The results provide detailed information towards better understanding of glacier change and specifically show that: (1) with our new stereo procedure, ZY-3 TLA data can significantly increase point cloud density and decrease invalid data on the glacier surface map to generate a high resolution (5 m) glacier mass balance map; (2) the glacier mass balance in both the Western Nyainqentanglha Mountains (WNM) and Eastern Nyainqentanglha Mountains (ENM) was negative in 2000-2017, and experienced faster mass loss in recent years (2013-2017) in the WNM. Overall, the glaciers in the western and eastern NM show different change patterns since they are influenced by different climate regimes; the glacier mass balances in WNM was -0.22 +/- 0.23 m w.e. a(-1) and -0.43 +/- 0.06 m w.e. a(-1) in 2000-2013 and 2013-2017, respectively, while in 2000-2017, it was -0.30 +/- 0.19 m w.e. a(-1) in the WNM and -0.56 +/- 0.20 m w.e. a(-1) in the ENM; (3) in the WNM, the glaciers experienced mass loss in 2000-2013 and 2013-2017 in the ablation zone, while in the accumulation zone mass increased in 2000-2013 and a large mass loss occurred in 2013-2017; as regards the ENM, the glacier mass balance was negative in 2000-2017 in both zones; (4) glacier mass balance can be affected by the fractional abundance of debris and glacier slope; (5) the glacier mass balances retrieved by ZY-3 and TanDEM-X data agreed well in the ablation zone, while a large difference occurred in the accumulation zone because of the snow/firn penetration of the X-band SAR signal.
关键词	CENTRAL TIBETAN PLATEAU DIGITAL ELEVATION MODELS KANGRI-KARPO MOUNTAINS ZHADANG GLACIER NAM CO WESTERN NYAINQENTANGLHA INYLCHEK GLACIER AREA REGION TOPOGRAPHY
英文关键词	glacier mass balance; Tibetan Plateau; Nyainqentanglha Mountains; geodetic method; point cloud; ZY-3; Three-Line-Array stereo images
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:000531559300119
来源期刊	REMOTE SENSING
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/259804
推荐引用方式 GB/T 7714	Ren, Shaoting,Menenti, Massimo,Jia, Li,et al. Glacier Mass Balance in the Nyainqentanglha Mountains between 2000 and 2017 Retrieved from ZiYuan-3 Stereo Images and the SRTM DEM[J]. 中国科学院青藏高原研究所,2020,12(5).
APA	Ren, Shaoting,Menenti, Massimo,Jia, Li,Zhang, Jing,Zhang, Jingxiao,&Li, Xin.(2020).Glacier Mass Balance in the Nyainqentanglha Mountains between 2000 and 2017 Retrieved from ZiYuan-3 Stereo Images and the SRTM DEM.REMOTE SENSING,12(5).
MLA	Ren, Shaoting,et al."Glacier Mass Balance in the Nyainqentanglha Mountains between 2000 and 2017 Retrieved from ZiYuan-3 Stereo Images and the SRTM DEM".REMOTE SENSING 12.5(2020).