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The Marsquake catalogue from InSight, sols 0–478

Clinton, John F. and Ceylan, Savas and van Driel, Martin and Giardini, Domenico and Stähler, Simon C. and Böse, Maren and Charalambous, Constantinos and Dahmen, Nikolaj L. and Horleston, Anna and Kawamura, Taichi and Khan, Amir and Orhand-Mainsant, Guenolé and Scholz, John-Robert and Euchner, Fabian and Banerdt, William Bruce and Lognonné, Philippe and Banfield, Don and Beucler, Eric and Garcia, Raphaël F. and Kedar, Sharon and Panning, Mark P. and Perrin, Clément and Pike, William T. and Smrekar, Suzanne E. and Spiga, Aymeric and Stott, Alexander E. The Marsquake catalogue from InSight, sols 0–478. (2021) Physics of the Earth and Planetary Interiors, 310. 106595. ISSN 0031-9201

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Official URL: https://doi.org/10.1016/J.PEPI.2020.106595

Abstract

The InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) mission began collecting high quality seismic data on Mars in February 2019. This manuscript documents the seismicity ob­ served by SEIS, InSight's seismometer, from this time until the end of March 2020. Within the InSight project, the Marsquake Service (MQS) is responsible for prompt review of all seismic data collected by InSight, detection of events that are likely to be of seismic origin, and curation and release of seismic catalogues. In the first year of data collection, MQS have identified 465 seismic events that we interpret to be from regional and teleseismic marsquakes. Seismic events are grouped into 2 different event families: the low frequency family is dominated by energy at long period below 1 s, and the high frequency family primarily include energy at and above 2.4 Hz. Event magnitudes, from Mars-specific scales, range from 1.3 to 3.7. A third class of events with very short duration but high frequency bursts have been observed 712 times. These are likely associated with a local source driven by thermal stresses. This paper describes the data collected so far in the mission and the procedures under which MQS operates; summarises the content of the current MQS seismic catalogue; and presents the key fea­ tures of the events we have observed so far, using the largest events as examples.

Item Type:Article
Audience (journal):International peer-reviewed journal
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Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
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Deposited On:07 Jan 2022 13:44

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