DOI: 10.5194/tc-9-849-2015
Scopus记录号: 2-s2.0-84928956051
论文题名: The GAMDAM glacier inventory: A quality-controlled inventory of Asian glaciers
作者: Nuimura T ; , Sakai A ; , Taniguchi K ; , Nagai H ; , Lamsal D ; , Tsutaki S ; , Kozawa A ; , Hoshina Y ; , Takenaka S ; , Omiya S ; , Tsunematsu K ; , Tshering P ; , Fujita K
刊名: Cryosphere
ISSN: 19940416
出版年: 2015
卷: 9, 期: 3 起始页码: 849
结束页码: 864
语种: 英语
英文关键词: digital elevation model
; geological survey
; image resolution
; Landsat thematic mapper
; qualitative analysis
; radiometric survey
; satellite imagery
; snow cover
; Himalayas
; Hindu Kush
英文摘要: We present a new glacier inventory for high-mountain Asia named "Glacier Area Mapping for Discharge from the Asian Mountains" (GAMDAM). Glacier outlines were delineated manually using 356 Landsat ETM+ scenes in 226 path-row sets from the period 1999-2003, in conjunction with a digital elevation model (DEM) and high-resolution Google EarthTM imagery. Geolocations are largely consistent between the Landsat imagery and DEM due to systematic radiometric and geometric corrections made by the United States Geological Survey. We performed repeated delineation tests and peer review of glacier outlines in order to maintain the consistency and quality of the inventory. Our GAMDAM glacier inventory (GGI) includes 87 084 glaciers covering a total area of 91 263 ± 13 689 km2 throughout high-mountain Asia. In the Hindu Kush-Himalaya range, the total glacier area in our inventory is 93% that of the ICIMOD (International Centre for Integrated Mountain Development) inventory. Discrepancies between the two regional data sets are due mainly to the effects of glacier shading. In contrast, our inventory represents significantly less surface area ('24%) than the recent global Randolph Glacier Inventory, version 4.0 (RGI), which includes 119 863 ± 9201 km2 for the entirety of high Asian mountains. Likely causes of this disparity include headwall definition, effects of exclusion of shaded glacier areas, glacier recession since the 1970s, and inclusion of seasonal snow cover in the source data of the RGI, although it is difficult to evaluate such effects quantitatively. Further rigorous peer review of GGI will both improve the quality of glacier inventory in high-mountain Asia and provide new opportunities to study Asian glaciers. © Author(s) 2015. CC Attribution 3.0 License. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75305
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: Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan; Chiba Institute of Science, Choshi, Japan; Fukushima Prefecture, Fukushima, Japan; Japan Aerospace Exploration Agency, Tsukuba, Japan; National Institute of Polar Research, Tachikawa, Japan; Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan; Civil Engineering Research Institute for Cold Region, Sapporo, Japan; Yamanashi Institute of Environmental Sciences, Fujiyoshida, Japan; Department of Geology and Mines, Thimphu, Bhutan
Recommended Citation:
Nuimura T,, Sakai A,, Taniguchi K,et al. The GAMDAM glacier inventory: A quality-controlled inventory of Asian glaciers[J]. Cryosphere,2015-01-01,9(3)