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Boulder Fall Activity in the Jezero Crater, Mars

Vijayan, S.; Mangold, N.; Bhardwaj, Anil +5 more

Jezero crater is the landing site for the Mars 2020 Perseverance rover. We report 63 boulder fall tracks within the crater using High-Resolution Imaging Science Experiment (HiRISE) images. The boulder tracks have both fresh and faded morphologies similar to those reported elsewhere on Mars, but reported for the first time in Jezero crater. We comb…

The Ice Content of the Dorsa Argentea Formation From Radar Sounder Data

Plaut, Jeffrey J.; Whitten, Jennifer L.; Campbell, Bruce A.

The Dorsa Argentea Formation (DAF) is an extensive Hesperian plains unit in the south polar region of Mars that was once ice rich and may still contain a substantial fraction of water ice. Given its 3.5-Ga age, the possibility for massive ice in the DAF has significant implications for the preservation of volatiles during large obliquity changes. …

Radar Sounding of Subsurface Structure in Eastern Coprates and Capri Chasmata, Mars

Kasaba, Yasumasa; Kumamoto, Atsushi; Oura, Aina +5 more

We surveyed the subsurface structure in eastern Coprates and Capri Chasmata in the equatorial region using high-resolution visible images, digital terrain models, and radar sounding data. We identified subsurface reflectors in four areas of the chasmata. At the stratigraphic exposure on the chasmata walls, the corresponding depth of the reflector …