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Spectral analysis of the Martian atmospheric turbulence: InSight observations

Abstract : In this study, we perform a detailed spectral analysis of the turbulent energy cascade using the in-situ observations by NASA's InSight lander on Mars. A recent study on the daytime Martian boundary layer using the InSight observations showed that the conventional Kolmogorov energy cascade of inertial sub-range fails to predict the spectral density of pressure. Here we extend this by investigating diurnal and seasonal variations in the spectral density of pressure, as the indicator of the Martian atmospheric turbulence. We show distinct spectral behaviours for the daytime and nighttime conditions. Moreover, we report the important effects of regional dust storms, gravity waves, bore and solitary waves on the turbulent energy cascade. Our results show that the presence of a dust storm and gravity wave activity can enhance the turbulence of the nighttime boundary layer of Mars despite the extreme stably stratified conditions compared to the terrestrial case.
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Preprints, Working Papers, ...
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https://hal.archives-ouvertes.fr/hal-03670716
Contributor : Orkun Temel Connect in order to contact the contributor
Submitted on : Tuesday, May 17, 2022 - 4:26:30 PM
Last modification on : Friday, May 20, 2022 - 3:37:12 AM

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  • HAL Id : hal-03670716, version 1

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Orkun Temel, Cem Senel, Aymeric Spiga, Naomi Murdoch, Don Banfield, et al.. Spectral analysis of the Martian atmospheric turbulence: InSight observations. 2022. ⟨hal-03670716⟩

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