Expanded and Recently Increased Glacier Surging in the Karakoram

被引：181

作者：

Copland, Luke ^{[1
]}

Sylvestre, Tyler ^{[1
]}

Bishop, Michael P. ^{[2
]}

Shroder, John F. ^{[2
]}

Seong, Yeong Bae ^{[3
]}

Owen, Lewis A. ^{[4
]}

Bush, Andrew ^{[5
]}

Kamp, Ulrich ^{[6
]}

机构：

[1] Univ Ottawa, Dept Geog, Ottawa, ON K1N 6N5, Canada

[2] Univ Nebraska, Dept Geog & Geol, Omaha, NE 68182 USA

[3] Korea Univ, Dept Geog Educ, Seoul 136701, South Korea

[4] Univ Cincinnati, Dept Geol, Cincinnati, OH 45221 USA

[5] Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB T6G 2E3, Canada

[6] Univ Montana, Dept Geog, Missoula, MT 59812 USA

来源：

ARCTIC ANTARCTIC AND ALPINE RESEARCH | 2011年 / 43卷 / 04期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会; 加拿大创新基金会;

关键词：

MASS-BALANCE; VARIEGATED GLACIER; BALTORO GLACIER; EAST GREENLAND; LILIGO GLACIER; SURGES; PAKISTAN; HIMALAYA; SVALBARD; CLIMATE;

D O I：

10.1657/1938-4246-43.4.503

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A review of published literature and satellite imagery from the late 1960s onwards has revealed 90 surge-type glaciers in the Karakoram mountains, of which 50 have not previously been described in detail. These glaciers were identified by a number of surface features indicative of surge-type behavior such as looped moraines, rapid terminus advance, strandlines and rapid changes in surface crevassing. These observations indicate that surge-type behavior is more common and widespread than previously believed on Karakoram glaciers. There is strong spatial clustering of the surge-type glaciers, and a doubling in the number of new surges in the 14 years after 1990 (26 surges) than in the 14 years before 1990 (13 surges). This is coincident with a period of increased precipitation and positive glacier mass balance in this region, and supports previous studies which have found that mass balance has an important control on the frequency of glacier surging.

引用

页码：503 / 516

页数：14

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