Hydraulic modelling of Athabasca Vallis, Mars

被引：19
|
作者：
Burr, DM [1 ]
机构：
[1] Univ Arizona, Dept Geosci & Planetary Sci, Tucson, AZ 85721 USA
来源：
HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES | 2003年 / 48卷 / 04期
关键词：
Mars; Athabasca Vallis; catastrophic flooding; hydraulic modelling; backwater;
D O I：
10.1623/hysj.48.4.655.51407
中图分类号：
TV21 [水资源调查与水利规划];
学科分类号：
081501 ;
摘要：
Palaeohydraulic modelling is presented for Athabasca Vallis, the youngest known catastrophic flood channel on Mars. This modelling incorporates three significant advantages over previous modelling of Martian channels: a step-backwater hydraulic model; more accurate topography; and improved flood height indicators The maximum modelled palaeodischarge is between I X 10(6) and 2 X 10(6) m(3) s(-1) depending on the friction coefficient selected. An anomalously high palaeostage indicator suggests a region of ponded backwater in the channel in which streamlined forms were created through deposition, with the additional possibility of post-flood subsidence/lowering of the channel slope due to magma extrusion.
引用
收藏
页码：655 / 664
页数：10
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