Genetic differences of rock glaciers and the discontinuous mountain permafrost zone in Kanchanjunga Himal, eastern Nepal

Citation
M. Ishikawa et al., Genetic differences of rock glaciers and the discontinuous mountain permafrost zone in Kanchanjunga Himal, eastern Nepal, PERMAFR P P, 12(3), 2001, pp. 243-253
Citations number
41
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Earth Sciences
Journal title
PERMAFROST AND PERIGLACIAL PROCESSES
ISSN journal
1045-6740 → ACNP
Volume
12
Issue
3
Year of publication
2001
Pages
243 - 253
Database
ISI
SICI code
1045-6740(200107/09)12:3<243:GDORGA>2.0.ZU;2-4
Abstract
A number of rock glaciers, including glacier-derived and talus-derived rock glaciers, were identified in Kanchanjunga. Himal, easternmost Nepal. DC re sistivity imagings were applied to representative rock glaciers of both typ es. The distribution of resistivity values in the subsurface within these r ock glaciers was significantly different. A massive glacial ice body was fo und within the glacier-derived rock glacier, suggesting this rock glacier o riginated from glacial dead ice (ice-cored rock glacier). The lower limits of discontinuous mountain permafrost zone in Kanchanjunga. Himal were infer red from the distribution of talus-derived rock glaciers (ice-cemented rock glaciers) and the estimated mean annual air temperature. The lower limit o f the discontinuous mountain permafrost zone is 4800 m ASL on the north-fac ing slopes, while 5300 m ASL on the south- to east-facing slopes. These alt itudes were considerably higher than those of the western. Himalaya, which are under dry continental climatic conditions. Copyright (C) 2001 John Wile y & Sons, Ltd.