Evaluating the Use of Seasonal Surface Displacements and Time‐Variable Gravity to Constrain the Interior of Mars DOI Creative Commons
Nick Wagner, P. B. James, A. Ermakov

et al.

Journal of Geophysical Research Planets, Journal Year: 2024, Volume and Issue: 129(6)

Published: June 1, 2024

Abstract The mass transport of volatiles on Mars represents a seasonally changing load the surface planet. Like Earth, as is redistributed across planet, responds in complex manner becoming displaced downwards or upwards. magnitude and extent displacement depend properties mechanical planetary interior. Based new estimates height variation seasonal polar caps (SPCs), we predict local displacements up to tens millimeters with strong degree 1 signal throughout Martian year. long‐wavelength portion potentially observable, few millimeters, located away from SPC where one could realistically measure it landed orbital mission. We also model direct contribution this process observable time variable gravity, find zonal coefficients be line previous measurements, although smaller magnitude. Future measurements used help elucidate composition interior using probe into Furthermore, more refined time‐variable gravity would powerful tool constraining pole‐to‐pole volatile cycle present Mars.

Language: Английский

Evaluating the Use of Seasonal Surface Displacements and Time‐Variable Gravity to Constrain the Interior of Mars DOI Creative Commons
Nick Wagner, P. B. James, A. Ermakov

et al.

Journal of Geophysical Research Planets, Journal Year: 2024, Volume and Issue: 129(6)

Published: June 1, 2024

Abstract The mass transport of volatiles on Mars represents a seasonally changing load the surface planet. Like Earth, as is redistributed across planet, responds in complex manner becoming displaced downwards or upwards. magnitude and extent displacement depend properties mechanical planetary interior. Based new estimates height variation seasonal polar caps (SPCs), we predict local displacements up to tens millimeters with strong degree 1 signal throughout Martian year. long‐wavelength portion potentially observable, few millimeters, located away from SPC where one could realistically measure it landed orbital mission. We also model direct contribution this process observable time variable gravity, find zonal coefficients be line previous measurements, although smaller magnitude. Future measurements used help elucidate composition interior using probe into Furthermore, more refined time‐variable gravity would powerful tool constraining pole‐to‐pole volatile cycle present Mars.

Language: Английский

Citations

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