GREENLAND ICE-SHEET THICKNESS CHANGES MEASURED BY LASER ALTIMETRY

被引：56

作者：

KRABILL, W

THOMAS, R

JEZEK, K

KUIVINEN, K

MANIZADE, S

机构：

[1] NASA,WASHINGTON,DC 20546

[2] OHIO STATE UNIV,BYRD POLAR RES CTR,COLUMBUS,OH 43210

[3] UNIV NEBRASKA,LINCOLN,NE 68508

[4] EG&G,WALLOPS FACIL,WALLOPS ISL,VA 23337

来源：

GEOPHYSICAL RESEARCH LETTERS | 1995年 / 22卷 / 17期

关键词：

D O I：

10.1029/95GL02069

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Precise airborne laser-altimetry surveys, at locations on the Greenland ice sheet, that had been accurately surveyed in 1980 and 1981, reveal a thickening in western Greenland of up to two meters between 1980 and 1993. We cannot yet state whether this represents a long-term trend or the cumulative effects of interannual variability of snow-accumulation rates. Nevertheless, the information presented here provides an indication of ice-thickness changes across southern Greenland in unprecedented detail. Laser altimetery surveys have now been made over all the major ice sheet drainage basins, and will be repeated at regular intervals to provide detailed estimates of ice thickening/thinning rates over the entire ice sheet.

引用

页码：2341 / 2344

页数：4

共 18 条

[1]

Braithwaite R.J., Thoughts on monitoring the effects of climate change on the surface elevation of the Greenland ice sheet, Global and Planetary Change, 9, pp. 251-261, (1994)

[2]

Drew A.J., (1983)

[3]

Douglas B.C., Cheney R.F., Miller L., Agreen W.S., Greenland ice sheet: is it growing or shrinking?, Science, 248, (1990)

[4]

Drewry D.J., Morris E.M., The Response of large ice sheets to climate change, Phil. Trans. R. Soc. London B, 338, pp. 235-242, (1992)

[5]

Huybrechts P., The present evolution of the Greenland ice sheet: an assessment by modelling, Global and Planetary Change, 9, pp. 39-51, (1994)

[6]

Kostecka J.M., Whillans I.M., Mass balance along two transects of the west side of the Greenland Ice sheet, J. Glaciol., 34, pp. 31-39, (1988)

[7]

Krabill W.B., Martin C.F., Aircraft positioning using global positioning system carrier phase data, Navigation, 34, pp. 1-21, (1987)

[8]

Krabill W.B., Swift R.N., (1985)

[9]

Krabill W.B., Thomas R.H., Martin C.F., Swift R.N., Fredrick E.B., Accuracy of Airborne Laser Altimetry over the Greenland Ice Sheet, Int. J. Remote Sensing

[10]

Reeh N., Gundestrup N.S., Mass balance of the Greenland Ice Sheet at Dye 3, J. Glaciol., 31, pp. 198-200, (1985)

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