Internal layers in an "accublation" ice cap: A test for flow

被引:36
作者
Fisher, DA [1 ]
机构
[1] Geol Survey Canada, Glaciol Sect, Ottawa, ON K1A 0E8, Canada
关键词
Mars; ice-cap; layers; sublimation; glaciers;
D O I
10.1006/icar.1999.6293
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Assuming the white areas of the north polar cap of Mars accumulate water ice and the dark scarp/trough spirals ablate and assuming there is ice motion from one type of zone to the other, the question is asked, "What do the isochrone layers look like internally and on the surface?" A simple two-dimensional time-varying isothermal model is used to demonstrate that the layering internally and in the ablation zones is strongly determined by the migrating scarp system and that waviness and discontinuities are to be expected in the internal layering and in the surface expressions of the layers on the ablation scarps.
引用
收藏
页码:289 / 294
页数:6
相关论文
共 13 条
[1]  
BUDD WF, 1986, POLARFORSCHUNG, V56, P43
[2]   POLAR BASAL MELTING ON MARS [J].
CLIFFORD, SM .
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 1987, 92 (B9) :9135-9152
[3]   STEADY THERMOMECHANICAL FLOW ALONG TWO-DIMENSIONAL FLOW LINES IN LARGE GROUNDED ICE SHEETS [J].
DAHLJENSEN, D .
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 1989, 94 (B8) :10355-10362
[4]   IF MARTIAN ICE CAPS FLOW - ABLATION MECHANISMS AND APPEARANCE [J].
FISHER, DA .
ICARUS, 1993, 105 (02) :501-511
[5]   STRATIGRAPHIC RELATIONSHIPS WITHIN MARTIAN POLAR-CAP DEPOSITS [J].
HOWARD, AD ;
CUTTS, JA ;
BLASIUS, KR .
ICARUS, 1982, 50 (2-3) :161-215
[6]  
HOWARD AD, 1978, ICARUS, V84, P2581
[7]  
HOWARD AD, 1981, 82385 NASA TM PLAN G, P333
[8]  
PATERSON WSB, 1994, PHYSICS GLACIERS
[9]  
Taylor KC, 1997, J GEOPHYS RES-OCEANS, V102, P26511, DOI 10.1029/96JC02500
[10]  
Thomas P.C., 1992, MARS, P767