Article Dans Une Revue Journal of Geophysical Research. Planets Année : 2024

Extensive Secondary Cratering From the InSight Sol 1034a Impact Event

I J Daubar
D. Kim
S C Stähler
E. Sansom

Résumé

Impact cratering is one of the fundamental processes throughout the history of the Solar System. The formation of new impact craters on planetary bodies has been observed with repeat images from orbiting satellites. However, the time gap between images is often large enough to preclude detailed analysis of smaller‐scale features such as secondary impact craters, which are often removed or buried over a short time period. Here we use a seismic event detected on Mars by the NASA InSight mission to investigate secondary cratering at a new impact crater. We strengthen the case that the seismic event that occurred on Sol 1034 (S1034a) is the result of a new impact cratering event. Using the exact timing of this event from InSight, we investigated the resulting new impact crater in orbital image data. The S1034a impact crater is approximately 9 m in diameter but is responsible for over 900 secondary impact events in the form of low albedo spots that are located at distances of up to almost 7 km from the primary crater. We suggest that the low albedo spots formed from relatively low energy ejecta, with individual ejecta block velocities less than 200 m s −1 . We estimate that the low albedo spots, the main evidence of secondary impact processes at this new impact event, fade within 200–300 days after formation.

Fichier principal
Vignette du fichier
JGRE-129-0.pdf (12.85 Mo) Télécharger le fichier
Origine Publication financée par une institution
Licence
DOI

Cite 10.17189/1517570 Article InSight SEIS Science Team. (2019). InSight SEIS Data Bundle. NASA Planetary Data System. https://doi.org/10.17189/1517570

Dates et versions

hal-05093686 , version 1 (02-06-2025)

Licence

Identifiants

Citer

P M Grindrod, I J Daubar, B. Fernando, D. Kim, G S Collins, et al.. Extensive Secondary Cratering From the InSight Sol 1034a Impact Event. Journal of Geophysical Research. Planets, 2024, 129 (12), pp.e2024JE008535. ⟨10.1029/2024JE008535⟩. ⟨hal-05093686⟩
100 Consultations
109 Téléchargements

Altmetric

Partager

  • More