Winds at the Mars 2020 Landing Site. 2. Wind Variability and Turbulence.

ABSTRACT: Wind speeds measured by the Mars 2020 Perseverance rover in Jezero crater were fitted as a Weibull distribution. InSight wind data acquired in Elysium Planitia were also used to contextualize observations. Jezero winds were found to be much calmer on average than in previous landing sites, despite the intense aeolian activity observed. However, a great influence of turbulence and wave activity was observed in the wind speed variations, thus driving the probability of reaching the highest wind speeds at Jezero, instead of sustained winds driven by local, regional, or large-scale circulation. The power spectral density of wind speed fluctuations follows a power-law, whose slope deviates depending on the time of day from that predicted considering homogeneous and isotropic turbulence. Daytime

SUBMITTER: Viudez-Moreiras D 

PROVIDER: S-EPMC10078282 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature