气候变化领域集成服务门户(CCPortal): The GAMDAM glacier inventory: A quality-controlled inventory of Asian glaciers

CCPortal

DOI	10.5194/tc-9-849-2015
	The GAMDAM glacier inventory: A quality-controlled inventory of Asian glaciers
	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.
发表日期	2015
ISSN	19940416
卷号	9 期号:3
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.
学科领域	digital elevation model; geological survey; image resolution; Landsat thematic mapper; qualitative analysis; radiometric survey; satellite imagery; snow cover; Himalayas; Hindu Kush
语种	英语
scopus关键词	digital elevation model; geological survey; image resolution; Landsat thematic mapper; qualitative analysis; radiometric survey; satellite imagery; snow cover; Himalayas; Hindu Kush
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119907
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
推荐引用方式 GB/T 7714	Nuimura T.,Sakai A.,Taniguchi K.,et al. The GAMDAM glacier inventory: A quality-controlled inventory of Asian glaciers[J],2015,9(3).
APA	Nuimura T..,Sakai A..,Taniguchi K..,Nagai H..,Lamsal D..,...&Fujita K..(2015).The GAMDAM glacier inventory: A quality-controlled inventory of Asian glaciers.Cryosphere,9(3).
MLA	Nuimura T.,et al."The GAMDAM glacier inventory: A quality-controlled inventory of Asian glaciers".Cryosphere 9.3(2015).