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Hydrological characteristics of recurrent slope lineae on Mars: Evidence for liquid flow through regolith and comparisons with Antarctic terrestrial analogs

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Abstract
  • On the basis of their morphology and seasonal thermal characteristics, recurrent slope lineae (RSL) on Mars have been inferred to be a possible result of the flow of a liquid (likely a saline brine) through the upper portions of the martian regolith. In this note, we analyze repeat HiRISE imaging of RSL to show that the downslope growth rate of recurrent slope lineae is well-fit by an elementary groundwater flow model that also describes the downslope propagation of Antarctic water tracks (terrestrial analogs to RSL), and that the apparent permeability of RSL-bearing slopes is consistent with the observed sandy regolith substrate.
  • KEYWORDS: Earth, Mars, Surface, Regoliths
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Citation
  • Levy, J. (2012). Hydrological characteristics of recurrent slope lineae on mars: Evidence for liquid flow through regolith and comparisons with antarctic terrestrial analogs. Icarus, 219(1), 1-4. doi: 10.1016/j.icarus.2012.02.016
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Journal Volume
  • 219
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  • 1
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  • This work was supported in part by the Antarctic Organisms and Ecosystems Program in the Antarctic Sciences Division of the National Science Foundation (NSF) (grant ANT-0851965).
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file details LevyJosephCEOASHydrologicalCharacteristicsRecurrent.pdf 07/24/2017 Public
file details LevyJosephCEOASHydrologicalCharacteristicsRecurrentTable1.pdf 07/24/2017 Public
file details LevyJosephCEOASHydrologicalCharacteristicsRecurrentFigure2.tif 07/24/2017 Public
file details LevyJosephCEOASHydrologicalCharacteristicsRecurrentFigure1.tif 07/24/2017 Public