IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2011  > Vol8 No.3
Digital terrain modelling using Corona and ALOS PRISM data to investigate the distal part of Imja Glacier, Khumbu Himal, Nepal
Lamsal, Damodar; Sawagaki, Takanobu; Watanabe, Teiji
Corresponding AuthorLamsal, D
2011-06
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
Volume8Issue:3Pages:390–402
AbstractThis study used Corona KH-4A and Advanced Land Observing Satellite (ALOS) PRISM images to generate digital terrain models (DTMs) of the distal part of Imja Glacier, where a few supraglacial ponds (similar to 0.07 km(2)) expanded into the large Imja Glacier Lake (Imja Tsho, similar to 0.91 km(2)) between 1964 and 2006. DTMs and subsequently derived topographical maps with contour intervals of 1 m were created from the high-resolution images (Corona in 1964 and ALOS in 2006) in the Leica Photogrammetric Suite (LPS) platform. The DTMs and topographic maps provided excellent representation of the elevation and micro-topography of the glacier surface, such as its supra-glacial ponds/lake, surface depressions, and moraine ridges, with an error of about +/- 4 m (maximum). The DTMs produced from the Corona and ALOS PRISM images are suitable for use in studies of the surface change of glaciers. The topographical maps produced from the Corona data (1964) showed that part of the dead ice in the down-glacier area was even higher than the top of the lateral moraine ridges, while the glacier surface in the up-glacier area was noticeably lower than the moraine crests. This suggests more extensive melting of glacier ice in the up-glacier area before 1964. The average lowering of the glacier surface from 1964 to 2006 was 16.9 m for the dead-ice area west of the lake and 47.4 m for the glacier surface east of the lake; between 1964 and 2002, the lake surface lowered by 82.3 m. These figures represent average lowering rates of 0.4, 1.1, and 2.2 m/year for the respective areas.
KeywordImja Glacier Nepal Himalaya Dtm Topographic Map Surface Lowering Corona Alos Prism
Language英语
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5844
CollectionJournal of Mountain Science_Journal of Mountain Science-2011_Vol8 No.3
Recommended Citation
GB/T 7714
Lamsal, Damodar,Sawagaki, Takanobu,Watanabe, Teiji. Digital terrain modelling using Corona and ALOS PRISM data to investigate the distal part of Imja Glacier, Khumbu Himal, Nepal[J]. JOURNAL OF MOUNTAIN SCIENCE,2011,8(3):390–402.
APA Lamsal, Damodar,Sawagaki, Takanobu,&Watanabe, Teiji.(2011).Digital terrain modelling using Corona and ALOS PRISM data to investigate the distal part of Imja Glacier, Khumbu Himal, Nepal.JOURNAL OF MOUNTAIN SCIENCE,8(3),390–402.
MLA Lamsal, Damodar,et al."Digital terrain modelling using Corona and ALOS PRISM data to investigate the distal part of Imja Glacier, Khumbu Himal, Nepal".JOURNAL OF MOUNTAIN SCIENCE 8.3(2011):390–402.
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