Hydraulic modelling of Athabasca Vallis, Mars

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24 Scopus citations

Abstract

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 1 × 106 and 2 × 106 m3 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.

Original languageEnglish (US)
Pages (from-to)655-664
Number of pages10
JournalHydrological Sciences Journal
Volume48
Issue number4
DOIs
StatePublished - Aug 2003
Externally publishedYes

Keywords

  • Athabasca Vallis
  • Backwater
  • Catastrophic flooding
  • Hydraulic modelling
  • Mars

ASJC Scopus subject areas

  • Water Science and Technology

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