HOW DOES THE GREENLAND ICE-SHEET GEOMETRY REMEMBER THE ICE-AGE

被引:10
作者
ABE-OUCHI, A
BLATTER, H
OHMURA, A
机构
[1] Dept. of Geography, Swiss Federal Institute of Technology
关键词
D O I
10.1016/0921-8181(94)90012-4
中图分类号
P9 [自然地理学];
学科分类号
0705 ; 070501 ;
摘要
The response of the Greenland ice sheet geometry to glacial/interglacial climatic transition is studied by using a numerical ice sheet dynamical model. The possible contribution due to the increase in melting, snow accumulation, ice temperature and accumulation of harder ice during the Holocene is examined. The results imply that: (1) within 1000 years after the termination of the Ice Age, the present ice sheet became thicker than that during the Ice Age, mainly due to the increase in snow accumulation, (2) at present, about 10,000 years after the transition, the ice sheet is still reacting to the change in ice temperature and the advection of harder Holocene ice, effects which are partly compensating each other, (3) the central part of the ice sheet may be thinning slightly by about 4 mm per year because of the somewhat quicker response of the ice sheet to temperature change than to advection of the harder Holocene ice, (4) the influence due to the repetition of the ice age cycles is negligible. Since the rate of change at present is below the detection threshold, observation of the elevation change must be explained by the short-term climatic change.
引用
收藏
页码:133 / 142
页数:10
相关论文
共 36 条
  • [1] ABEOUCHI A, 1993, ANN GLACIOL, V18, P200
  • [2] ABEOUCHI A, 1993, THESIS ETH ZURICH
  • [3] ABRUPT INCREASE IN GREENLAND SNOW ACCUMULATION AT THE END OF THE YOUNGER DRYAS EVENT
    ALLEY, RB
    MEESE, DA
    SHUMAN, CA
    GOW, AJ
    TAYLOR, KC
    GROOTES, PM
    WHITE, JWC
    RAM, M
    WADDINGTON, ED
    MAYEWSKI, PA
    ZIELINSKI, GA
    [J]. NATURE, 1993, 362 (6420) : 527 - 529
  • [4] [Anonymous], 1971, NUMERICAL WEATHER PR
  • [5] TEMPORAL VARIATIONS IN THE BE-10 CONCENTRATION LEVELS FOUND IN THE DYE-3 ICE CORE, GREENLAND
    BEER, J
    OESCHGER, H
    ANDREE, M
    BONANI, G
    SUTER, M
    WOLFLI, W
    LANGWAY, CC
    [J]. ANNALS OF GLACIOLOGY, 1984, 5 : 16 - 17
  • [6] CLAUSEN HB, 1988, ANN GLACIOLOGY, V0010
  • [7] PALEOTEMPERATURES STILL EXIST IN THE GREENLAND ICE-SHEET
    DAHLJENSEN, D
    JOHNSEN, SJ
    [J]. NATURE, 1986, 320 (6059) : 250 - 252
  • [8] Herterich K, 1990, ANN GLACIOL, V14, P55
  • [9] HOFMANN W, 1974, Z GLETSCHERKD GLAZIA, V5, P217
  • [10] Hutter K., 1983, THEORETICAL GLACIOLO