Initial insights from 2.5D hydraulic modeling of floods in Athabasca Valles, Mars

Laz P. Keszthelyi, R. P. Denlinger, D. R.H. O'Connell, D. M. Burr

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

We present the first application of a 2.5D hydraulic model to catastrophic floods on Mars. This model simulates flow over complex topography and incorporates flood dynamics that could not be modeled in the earlier 1D models. We apply this model to Athabasca Valles, the youngest outflow channel on Mars, investigating previous bank-full discharge estimates and utilizing the interpolated Mars Orbiter Laser Altimeter elevation map as input. We confirm that the bank-full assumption does not fit the observed landforms. Instead, the channel appears more deeply incised near the source. Flow modeling also identifies several areas of special interest, including a dry cataract that coincides with a region of predicted high erosion. However, artifacts in the elevation data strongly impacted estimated stages and velocities in other areas. More extensive connection between the flood hydraulics and observed landforms awaits improved topographic data.

Original languageEnglish (US)
Article numberL21206
JournalGeophysical Research Letters
Volume34
Issue number21
DOIs
StatePublished - Nov 16 2007
Externally publishedYes

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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