DOI: 10.5194/tc-9-505-2015
Scopus记录号: 2-s2.0-84924858511
论文题名: Spatial patterns in glacier characteristics and area changes from 1962 to 2006 in the Kanchenjunga-Sikkim area, eastern Himalaya
作者: Racoviteanu A ; E ; , Arnaud Y ; , Williams M ; W ; , Manley W ; F
刊名: Cryosphere
ISSN: 19940416
出版年: 2015
卷: 9, 期: 2 起始页码: 505
结束页码: 523
语种: 英语
英文关键词: ASTER
; glacier
; QuickBird
; satellite imagery
; solar radiation
; surface area
; topography
; WorldView
; Himalayas
; India
; Kangchenjunga
; Nepal
; Sikkim
英文摘要: This study investigates spatial patterns in glacier characteristics and area changes at decadal scales in the eastern Himalaya-Nepal (Arun and Tamor basins), India (Teesta basin in Sikkim) and parts of China and Bhutan-based on various satellite imagery: Corona KH4 imagery, Landsat 7 Enhanced Thematic Mapper Plus (ETM+) and Advanced Spaceborne Thermal Emission Radiometer (ASTER), QuickBird (QB) and WorldView-2 (WV2). We compare and contrast glacier surface area changes over the period of 1962-2000/2006 and their dependency on glacier topography (elevation, slope, aspect, percent debris cover) and climate (solar radiation, precipitation) on the eastern side of the topographic barrier (Sikkim) versus the western side (Nepal). Glacier mapping from 2000 Landsat ASTER yielded 1463 ± 88 km2 total glacierized area, of which 569 ± 34 km2 was located in Sikkim and 488 ± 29 km2 in eastern Nepal. Supraglacial debris covered 11% of the total glacierized area, and supraglacial lakes covered about 5.8% of the debris-covered glacier area alone. Glacier area loss (1962 to 2000) was 0.50 ± 0.2% yr−1, with little difference between Nepal (0.53 ± 0.2% yr−1) and Sikkim (0.44 ± 0.2% yr−1. Glacier area change was controlled mostly by glacier area, elevation, altitudinal range and, to a smaller extent, slope and aspect. In the Kanchenjunga-Sikkim area, we estimated a glacier area loss of 0.23 ± 0.08% yr−1 from 1962 to 2006 based on high-resolution imagery. On a glacier-by-glacier basis, clean glaciers exhibit more area loss on average from 1962 to 2006 (34%) compared to debris-covered glaciers (22%). Glaciers in this region of the Himalaya are shrinking at similar rates to those reported for the last decades in other parts of the Himalaya, but individual glacier rates of change vary across the study area with respect to local topography, percent debris cover or glacier elevations. © 2015 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75329
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
There are no files associated with this item.
作者单位: Laboratoire de Glaciologie et Geóphysique de l'Environnement, Domaine Universitaire, 54 rue Molière, SaintMartin d'Hères cedex, France; Laboratoire d'Étude des Transferts en Hydrologie et Environnement, BP 53, SaintMartin d'Hères cedex, France; Department of Geography, Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO, United States; Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO, United States
Recommended Citation:
Racoviteanu A,E,, Arnaud Y,et al. Spatial patterns in glacier characteristics and area changes from 1962 to 2006 in the Kanchenjunga-Sikkim area, eastern Himalaya[J]. Cryosphere,2015-01-01,9(2)