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Article Dans Une Revue Physics of the Earth and Planetary Interiors Année : 2021

The Marsquake catalogue from InSight, sols 0–478

John Clinton
  • Fonction : Auteur
Savas Ceylan
  • Fonction : Auteur
Martin van Driel
  • Fonction : Auteur
Simon C Stähler
Constantinos Charalambous
Anna Horleston
Taichi Kawamura
Amir Khan
Fabian Euchner
Mark P Panning
Clement Perrin
William T Pike
Suzanne E Smrekar
Alexander E Stott

Résumé

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 observed 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 features of the events we have observed so far, using the largest events as examples.
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Dates et versions

hal-03163521 , version 1 (09-03-2021)

Identifiants

Citer

John Clinton, Savas Ceylan, Martin van Driel, Domenico Giardini, Simon C Stähler, et al.. The Marsquake catalogue from InSight, sols 0–478. Physics of the Earth and Planetary Interiors, 2021, 310, pp.106595. ⟨10.1016/j.pepi.2020.106595⟩. ⟨hal-03163521⟩
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