This is a Preprint and has not been peer reviewed. The published version of this Preprint is available: https://doi.org/10.1029/2021GL093127. This is version 1 of this Preprint.
No cryosphere-confined aquifer below InSight on Mars
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Authors
Michael Manga,
Vashan Wright 
Abstract
The seismometer deployed by the InSight lander measured the seismic velocity of the Martian crust. We use a rock physics model to interpret those velocities and constrain hydrogeological properties. The seismic velocity of the upper ~10 km is too low to be ice-saturated. Hence there is no cryosphere that confines deeper aquifers. An increase in seismic velocity at depths of ~10 km could be explained by a few volume percent of mineral cement (1-5%) in the pores and may document the past or present depth of aquifers.
DOI
https://doi.org/10.31223/X5SG71
Subjects
Planetary Geophysics and Seismology, Planetary Hydrology, Planetary Sciences
Keywords
Dates
Published: 2021-02-24 11:40
Last Updated: 2021-02-24 19:40
License
CC BY Attribution 4.0 International
Additional Metadata
Conflict of interest statement:
None
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