IF MARTIAN ICE CAPS FLOW - ABLATION MECHANISMS AND APPEARANCE

被引:44
作者
FISHER, DA
机构
[1] Glaciology Section, Terrain Sciences Division, Geological Survey of Canada, Ottawa, ON K1A 0E8
关键词
D O I
10.1006/icar.1993.1144
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Assuming that the northern ice cap of Mars is thick enough to flow like terrestrial ice sheets, a model is presented that explains (i) the origins, movement, and spiral nature of the scarp/trough complexes, (ii) the reentrant valleys like Chasma Boreale, and (iii) the layered terrain. Accumulation and ablation are discussed in relation to the scarps and a model is developed relating them to ice flow and scarp velocities and to the particle paths within the ice cap. A brief summary of terrestrial ice sheet flow and mass balance is given in order to illustrate and clarify the concepts used to model the martian ice caps. © 1993 Academic Press. All rights reserved.
引用
收藏
页码:501 / 511
页数:11
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