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Bolide Airbursts as a Seismic Source for the 2018 Mars InSight Mission

Stevanović, Jennifer and Teanby, N. A. and Wookey, James and Selby, N. and Daubar, I. J. and Vaubaillon, Jeremie and Garcia, Raphaël F. Bolide Airbursts as a Seismic Source for the 2018 Mars InSight Mission. (2017) Space Science Reviews, 211 (1-4). 525-545. ISSN 0038-6308

(Document in English)

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Official URL: https://doi.org/10.1007/s11214-016-0327-3


Abstract In 2018, NASA will launch InSight, a single-station suite of geophysical instru- ments, designed to characterise the martian interior. We investigate the seismo-acoustic sig- nal generated by a bolide entering the martian atmosphere and exploding in a terminal air- burst, and assess this phenomenon as a potential observable for the SEIS seismic payload. Terrestrial analogue data from four recent events are used to identify diagnostic airburst characteristics in both the time and frequency domain. In order to estimate a potential number of detectable events for InSight, we first model the impactor source population from observations made on the Earth, scaled for planetary radius, entry velocity and source density. We go on to calculate a range of potential airbursts from the larger incident impactor population. We estimate there to be ∼ 1000 events of this nature per year on Mars. To then derive a detectable number of airbursts for InSight, we scale this number according to atmospheric attenuation, air-to-ground coupling inefficiencies and by instrument capability for SEIS. We predict between 10–200 detectable events per year for InSight.

Item Type:Article
HAL Id:hal-02178908
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Other partners > National Aeronautics and Space Administration - NASA (USA)
Other partners > Sorbonne Université (FRANCE)
Other partners > University of Bristol (UNITED KINGDOM)
Other partners > California Institute of Technology - Caltech (USA)
Other partners > Institut national des sciences de l'Univers - INSU (FRANCE)
Other partners > Observatoire de Paris (FRANCE)
Other partners > Université de Lille (FRANCE)
Laboratory name:
Deposited On:24 Jan 2019 14:08

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