DOI: 10.5194/tc-10-2203-2016
Scopus记录号: 2-s2.0-84989213495
论文题名: Quantifying ice loss in the eastern Himalayas since 1974 using declassified spy satellite imagery
作者: Maurer J ; M ; , Rupper S ; B ; , Schaefer J ; M
刊名: Cryosphere
ISSN: 19940416
出版年: 2016
卷: 10, 期: 5 起始页码: 2203
结束页码: 2215
语种: 英语
英文关键词: ASTER
; climate change
; geodetic network
; glacial lake
; glacier mass balance
; iceberg calving
; quantitative analysis
; remote sensing
; satellite data
; satellite imagery
; Bhutan
; China
; Himalayas
英文摘要: Himalayan glaciers are important natural resources and climate indicators for densely populated regions in Asia. Remote sensing methods are vital for evaluating glacier response to changing climate over the vast and rugged Himalayan region, yet many platforms capable of glacier mass balance quantification are somewhat temporally limited due to typical glacier response times. We here rely on declassified spy satellite imagery and ASTER data to quantify surface lowering, ice volume change, and geodetic mass balance during 1974-2006 for glaciers in the eastern Himalayas, centered on the Bhutan-China border. The wide range of glacier types allows for the first mass balance comparison between clean, debris, and lake-terminating (calving) glaciers in the region. Measured glaciers show significant ice loss, with an estimated mean annual geodetic mass balance of-0.13±0.06mw.e. yr-1 (meters of water equivalent per year) for 10 clean-ice glaciers,-0.19±0.11mw.e. yr-1 for 5 debris-covered glaciers,-0.28±0.10mw.e. yr-1 for 6 calving glaciers, and-0.17±0.05mw.e. yr-1 for all glaciers combined. Contrasting hypsometries along with melt pond, ice cliff, and englacial conduit mechanisms result in statistically similar mass balance values for both clean-ice and debris-covered glacier groups. Calving glaciers comprise 18% (66 km2/of the glacierized area yet have contributed 30%(-0.7 km3/to the total ice volume loss, highlighting the growing relevance of proglacial lake formation and associated calving for the future ice mass budget of the Himalayas as the number and size of glacial lakes increase. © 2016 The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75072
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: Lamont-Doherty Earth Observatory (L-DEO), Palisades, NY, United States; Department of Earth and Environmental Sciences, Columbia University, New York, NY, United States; University of Utah, Department of Geography, Salt Lake City, UT, United States
Recommended Citation:
Maurer J,M,, Rupper S,et al. Quantifying ice loss in the eastern Himalayas since 1974 using declassified spy satellite imagery[J]. Cryosphere,2016-01-01,10(5)