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Accessing the Seismic Event Catalog from the Insight Mission to Mars

Session: Insight Seismology on Mars: Results From the First Martian Year of Data and Prospects for the Future

Type: Oral

Date: 4/23/2021

Presentation Time: 02:30 PM Pacific

Description: 

The IRIS DMC has long been a repository for Earth-based seismic data and has for the past year hosted the seismic data from the InSight lander on Mars. With the release of the mars-event web service, we are for the first time providing web service access to a catalog of seismic events from Mars (‘marsquakes’). Funded by NASA’s Jet Propulsion Laboratory, the RESTful service is an IRIS implementation of the FDSN-event specification, adapted to the unique features of Martian seismic events. It provides a query interface to the Mars Seismic Catalog, provided in QuakeML format with Mars-specific extensions by InSight’s Marsquake Service team led by ETH Zürich. The community-based standards used are important to ensure the data are publicly available and easily accessible for the long-term.

The Marsquake Seismic Catalog aims to be a planetary-wide catalog of events generated from the seismic data recorded on SEIS, a single seismometer package. This instrument is part of NASA’s InSight mission and was designed and produced by IPGP and the French Space Agency (CNES). It was deployed onto the surface of Mars in February 2019, and since this time has recorded nearly 500 marsquakes and over 700 thermal cracking events. In compiling the catalog, MQS developed new techniques for event detection, single station location and magnitude estimates that have been applied to the data received from Mars.

We will discuss how to use the mars-event service to access and query this exciting new dataset, and the unique ways in which events are located and characterized on Mars. The catalogue is updated by MQS every 3 months, with a delay of 3 months, and each version can be accessed by the service.

Presenting Author: Autumn Johnson

Student Presenter: No

Authors