Overview of observed seismic signals on Mars
Abstract
InSight landed on Mars in late November 2018, and the SEIS package, which consists of one short period and one very broadband sensor, was deployed on the surface shortly after. The Marsquake Service (MQS) is a ground segment support group of InSight that has been set up to establish and maintain the seismicity catalogue for Mars during the lifetime of the mission. In preparation for the mission, the MQS team has developed single station location and event characterisation algorithms, and created a software framework to manage data flow that includes these approaches. The data transmitted to Earth from InSight is received by SISMOC (SEIS on Mars Operations Center), then automatically transferred to MSDS (Mars SEIS Data Service) for distribution to InSight team, and to MQS for further analysis to detect quakes.
The MQS has at least one member on duty who routinely checks the data for any type of seismic signals in a timely manner. All suspicious signals are then communicated to the InSight team after evaluation. Seismic data from InSight shows that Mars is a relatively quiet planet. This allows us to observe low amplitude signals that would not be seen in Earth data due to higher ambient noise. Here, we discuss examples of signals of both seismic and non-seismic origins. We describe the characteristics of these observations in time and frequency domains in order to give an overview of martian data content.- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFMDI51B0027C
- Keywords:
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- 6225 Mars;
- PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS;
- 5430 Interiors;
- PLANETARY SCIENCES: SOLID SURFACE PLANETS;
- 7299 General or miscellaneous;
- SEISMOLOGY