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学科主题: 地理学::自然地理学
题名: Glacier elevation changes (2012-2016) of the Puruogangri Ice Field on the Tibetan Plateau derived from bi-temporal TanDEM-X InSAR data
作者: Liu, L (Liu, Lin)1, 2; Jiang, LM (Jiang, Liming)1, 2; Sun, YF (Sun, Yafei)1, 2; Yi, CL (Yi, Chaolu)3; Wang, HS (Wang, Hansheng)1; Hsu, HT (Hsu, Houtse)1
通讯作者: Jiang, LM
刊名: INTERNATIONAL JOURNAL OF REMOTE SENSING
发表日期: 2016
DOI: 10.1080/01431161.2016.1246777
卷: 37, 期:24, 页:5687-5707
收录类别: SCI
合作性质: 国际
文章类型: Article
英文摘要: This study aims to evaluate the potential of TerraSAR-X (TSX) add-on for Digital Elevation Measurement (TanDEM-X) bi-static synthetic aperture radar (SAR) data sets for the retrieval of glacier digital elevation models (DEMs) and elevation changes over mountain regions. We exploited two pairs of TanDEM-X SAR data sets acquired in 2012 and 2016 over the Puruogangri Ice Field (PIF), which is the largest modern glacier on the Tibetan Plateau (TP). Two fine-detail and high-precision DEMs for 2012 and 2016 over the PIF were generated by differential interferometric processing, and were validated against height measurements from global positioning system (GPS) and Ice, Cloud, and land Elevation Satellite (ICESat) altimetry, yielding a vertical accuracy of 1.91 +/- 0.76 m and 1.69 +/- 0.83 m, respectively. The elevation changes were derived by differencing the bi-temporal TanDEM-X DEMs and revealed predominant glacier surface thinning on the PIF. An annual surface thinning rate of -0.317 +/- 0.027 m year(-1) was estimated in the period 2012-2016, which is much larger than the estimate of -0.049 +/- 0.200 m year(-1) for the period 2000-2012 reported in previous studies. This accelerating trend of glacier surface thinning might be attributable to the continued increase in summer temperature since the 1980s and decrease in annual precipitation between two periods of investigation. This study demonstrates that comparison of the bi-temporal TanDEM-X DEMs is an efficient method for accurate and detailed retrieval of the latest surface elevation changes of mountain glaciers.
语种: 英语
WOS记录号: WOS:000388599500001
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7787
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Geodesy & Geophys, State Key Lab Geodesy & Earths Dynam, Wuhan, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing, Peoples R China

Recommended Citation:
Liu, L ,Jiang, LM ,Sun, YF ,et al. Glacier elevation changes (2012-2016) of the Puruogangri Ice Field on the Tibetan Plateau derived from bi-temporal TanDEM-X InSAR data[J]. INTERNATIONAL JOURNAL OF REMOTE SENSING,2016,37(24):5687-5707.
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