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Temperate ice layer found in the upper area of Jima Yangzong Glacier, the headstream of Yarlung Zangbo River.

Authors :
Zhang, Tong
Ding, Minghu
Xiao, Cunde
Zhang, Dongqi
Du, Zhiheng
Source :
Science Bulletin. Apr2016, Vol. 61 Issue 8, p619-621. 3p.
Publication Year :
2016

Abstract

For the first time we investigate the basal thermal condition in the upper area of Jima Yangzong Glacier, the headstream of Yarlung Zangbo River, using ground-penetrating radar techniques. With common offset and common mid-point surveys we analyze the radar velocities in ice with respect to cold-temperate ice transition surface (0.1751 ± 0.0028 m ns) and ice-bedrock interface (0.1657 ± 0.0033 m ns), indicating a radar velocity of 0.1410 ± 0.0154 m ns for the temperate ice layer (16.6 ± 1.8 m). We estimate that the temperate ice layer has a water content of around 6 % ± 4 %, suggesting that the Jima Yangzong Glacier, previously known as continental-type, now possibly becomes polythermal. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20959273
Volume :
61
Issue :
8
Database :
Academic Search Index
Journal :
Science Bulletin
Publication Type :
Academic Journal
Accession number :
132066613
Full Text :
https://doi.org/10.1007/s11434-016-1045-7