OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Monitoring of Dust Devil Tracks Around the InSight Landing Site, Mars, and Comparison With In Situ Atmospheric Data

Perrin, C. and Rodriguez, S. and Jacob, A. and Lucas, A. and Spiga, A. and Murdoch, Naomi and Lorenz, R. and Daubar, I. J. and Pan, L. and Kawamura, T. and Lognonné, P. and Banfield, D. and Banks, M. E. and Garcia, Raphaël F. and Newman, C. E. and Ohja, L. and Widmer-Schnidrig, R. and McEwen, A. S. and Banerdt, W. B. Monitoring of Dust Devil Tracks Around the InSight Landing Site, Mars, and Comparison With In Situ Atmospheric Data. (2020) Geophysical Research Letters, 47 (10). ISSN 0094-8276

[img]
Preview
(Document in English)

PDF (Publisher's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
6MB

Official URL: https://doi.org/10.1029/2020GL087234

Abstract

The NASA InSight mission on Mars is a unique opportunity to study atmospheric processes both from orbit and in situ observations.We use post-landing high-resolution satellite images to monitor dust devil activity during the first 8 months of the mission.We perform mapping and semiautomatic detection of newly formed dust devil tracks and analyze their characteristics (sizes, azimuths, distances, and directions of motion).We find a large number of tracks appearing shortly after landing, followed by a significant decrease of activity during late winter, then a progressive increase during early spring. New tracks are characterized by dark linear, to slightly curvilinear, traces ranging from a few to more than 10 m wide. Tracks are oriented in the ambient wind direction, according to measurements made by InSight's meteorological sensors. The systematic analysis of dust devil tracks is useful to have a better understanding of atmospheric and aeolian activity around InSight.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Laboratory name:
Statistics:download
Deposited On:24 Mar 2021 14:04

Repository Staff Only: item control page