- 1University of Science and Technology of China, School of Earth and Space Sciences, China (cyyang@ustc.edu.cn)
- 2Department of Earth and Space Sciences, Southern University of Science and Technology, Shenzhen, China
- 3Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
- 4Key Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
This study investigated high-frequency gravity waves (HFGWs) observed by the Zhurong/Tianwen-1 and Perseverance/Mars 2020 rovers between 09:00 and 11:00 local time, from Ls 140° to 165° in Mars Year 36. By analyzing the eccentricity of hodographs for monochromatic wind perturbations obtained from the horizontal wind perturbation, HFGWs were identified via their predominantly linear characteristics.The propagation directions of these waves were determined using polarization relationships from the linear theory of HFGWs. The stability of the background atmosphere was estimated from the Dynamic Meteorology Laboratory general circulation model simulation. The frequency of HFGWs doubled following the onset of a regional dust storm (RDS) in the Utopia Planitia region, where the Zhurong rover landed. The HFGWs observed by Zhurong predominantly propagated in a north-south direction before the RDS and then in an east-west direction afterward. The changes in propagation direction were likely related to atmospheric instability and the background wind changes before and after the storm.
How to cite: Yang, C., Sun, C., Ban, C., Lai, D., Wu, Z., Fang, X., and Li, T.: Observed Martian High-frequency gravity waves by Zhurong and Perseverance rovers before / after a regional dust storm, EGU General Assembly 2025, Vienna, Austria, 27 Apr–2 May 2025, EGU25-5310, https://doi.org/10.5194/egusphere-egu25-5310, 2025.
