Analyzing Low Frequency Seismic Events at Cerberus Fossae as Long Period Volcanic Quakes

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dc.contributor.authorKedar, Sharonen
dc.contributor.authorPanning, Mark P.en
dc.contributor.authorSmrekar, Suzanne E.en
dc.contributor.authorStahler, Simon C.en
dc.contributor.authorKing, Scott D.en
dc.contributor.authorGolombek, Matthew P.en
dc.contributor.authorManga, Michaelen
dc.contributor.authorJulian, Bruce R.en
dc.contributor.authorShiro, Brianen
dc.contributor.authorPerrin, Clementen
dc.contributor.authorPower, John A.en
dc.contributor.authorMichaut, Chloeen
dc.contributor.authorCeylan, Savasen
dc.contributor.authorGiardini, Domenicoen
dc.contributor.authorLognonne, Philippe H.en
dc.contributor.authorBanerdt, William B.en
dc.contributor.departmentGeosciencesen
dc.date.accessioned2021-07-13T18:18:18Zen
dc.date.available2021-07-13T18:18:18Zen
dc.date.issued2021-04en
dc.description.abstractThe InSight Mission began acquiring the first seismic data on Mars in early 2019 and has detected hundreds of events. The largest events recorded to date originate at Cerberus Fossae, a young volcanic region characterized by high volume, low viscosity lava flows. A handful of Low Frequency (LF) quakes that share key attributes of Long Period quakes recorded on Earth's volcanoes are also traced to Cerberus Fossae. This study explores whether a traditional volcanic source model that simulates the generation of tremor as pressurized fluid makes its way through a channel at depth, can explain these atypical LF events. We consider a wide range of physical parameters including fluid viscosity, the ratio of driving pressure to lithostatic pressure, aspect ratio of the channel, and the equilibrium channel opening. We find that the model can produce the observed seismic signature, with a combination of low-viscosity magma and high volume flux of similar to 10(4) - 10(5) m(3)/s that are within an order-of-magnitude agreement with Cerberus Fossae lava flow properties deduced from analysis of lava flow dimensions. It is impossible, however, at this stage to conclude whether or not this is a likely explanation for Mars, as the model results in fluxes that are extreme for Earth yet are just within bounds of what has been inferred for Cerberus Fossae. We therefore conclude that we cannot rule out active magma flow as the mechanism responsible for the atypical LF events that likely originate from Cerberus Fossae.en
dc.description.adminPublic domain – authored by a U.S. government employeeen
dc.description.notesS. Kedar, M. P. Panning, S. E. Smrekar, M. P. Golombek, and W. B. Banerdt were supported by the NASA InSight mission and funds from the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. S. D. King was supported by the NASA InSight mission. The French authors acknowledge CNES and ANR (ANR-14-CE36-0012-02 and ANR-19-CE31-0008-08) for their support. The authors acknowledge NASA, CNES, partner agencies and Institutions (UKSA, SSO, DLR; JPL, IPGP-CNRS, ETHZ, IC, MPS-MPG) and the operators of JPL, SISMOC, MSDS, IRIS-DMC, NIED Hi-net, and PDS for providing SEED SEIS data.en
dc.description.sponsorshipNASA InSight mission; Jet Propulsion Laboratory, California Institute of Technology; CNESCentre National D'etudes Spatiales; ANRFrench National Research Agency (ANR) [ANR-14-CE36-0012-02, ANR-19-CE31-0008-08]; National Aeronautics and Space AdministrationNational Aeronautics & Space Administration (NASA)en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1029/2020JE006518en
dc.identifier.eissn2169-9100en
dc.identifier.issn2169-9097en
dc.identifier.issue4en
dc.identifier.othere2020JE006518en
dc.identifier.urihttp://hdl.handle.net/10919/104149en
dc.identifier.volume126en
dc.language.isoenen
dc.rightsPublic Domainen
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/en
dc.subjectlong&#8208en
dc.subjectperioden
dc.subjectMarsen
dc.subjecttremoren
dc.titleAnalyzing Low Frequency Seismic Events at Cerberus Fossae as Long Period Volcanic Quakesen
dc.title.serialJournal of Geophysical Research-Planetsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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