A new type of ice formation zone found in the Himalayas

被引：11

作者：

Yao, TD ^{[1
]}

Pu, JC ^{[1
]}

Wang, NL ^{[1
]}

Tian, LD ^{[1
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Glaciol & Geocryol, Lab Ice Core & Cold Reg Environm, Lanzhou 730000, Peoples R China

来源：

CHINESE SCIENCE BULLETIN | 1999年 / 44卷 / 05期

基金：

中国国家自然科学基金;

关键词：

ice formation; glacial accumulation; Dasuopu Glacier;

D O I：

10.1007/BF02977891

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Ice formation was studied on the Dasuopu Glacier located in the Mount Xixabangma (28 degrees 23' N, 85 degrees 43'E) in the Himalayas. Snow pits and shallow ice cores are analyzed to reveal ice formation process. The results show that the ice formation process, or in other words, the process of densitification, on the col (7 000 m a. s. l.) of the Dasuopu Glacier is a stable, slow and gradual process. The snow-ice transformation on the glacier is estimated to be 30-40 m below the surface. The temperature on the Dasuopu Glacier is very low (similar to -14 degrees C at 10 m) and similar to that in polar type ice cap. We, therefore, speculate that the process of snow-ice transformation is undertaken under snow pressure, and that there is a percolation zone on the Dasuopu Glacier. The high altitude of the col and monsoon snow fall accompnied by heavy cloud and high albedo favorite the percolation zone formation.

引用

页码：469 / 474

页数：6