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Estimating the seismicity of Venus by scaling Earth's seismicity

van Zelst, Iris and Maia, Julia and Spühler, Moritz and Plesa, Ana-Catalina and Garcia, R. and Ghail, Richard and Gülcher, A. and Horleston, A. and Kawamura, T. and Klaasen, S. and Lognonne, P. and Orgel, C. and Panning, Mark and Sabbeth, L. and Smolinksi, K. (2023) Estimating the seismicity of Venus by scaling Earth's seismicity. EGU General Assembly 2023, Vienna, Austria. doi: 10.5194/egusphere-egu23-9086.

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Official URL: https://meetingorganizer.copernicus.org/EGU23/EGU23-9086.html


With the selection of multiple missions to Venus by NASA and ESA planned to launch in the coming decade, we will greatly improve our understanding of Venus as a planet. However, the selected missions cannot tell us anything about the seismicity on Venus, which is a crucial observable to constrain the tectonic activity and geodynamic regime of the planet, and its interior structure. Here, we provide new, preliminary estimates of Venus’ global annual seismic budget and the expected frequency of venusquakes per year. We obtain this estimate by scaling the seismicity of the Earth recorded in the CMT catalogue. We test different potential scaling factors based on e.g., the difference in mass, radius, potential seismogenic volume, etc. We also sort the earthquakes into their respective tectonic settings, which allows us to exclude irrelevant tectonic settings present on Earth, but most likely not on Venus from our analysis. This enables us to present a range of potential seismic budgets and venusquake frequencies per tectonic setting on Venus. This then provides a new estimate of the potential amount of seismicity on Venus. However, it is uncertain how valid this simple scaling approach is from Earth to Venus. Indeed, previous attempts of scaling the volcanism of Earth to Venus (Byrne & Krishnamoorthy, 2022; Van Zelst, 2022) resulted in numbers that aligned with independent estimates, but are still unconstrained and hard to verify until the announced missions fly. Therefore, in order to provide a more robust and holistic view of Venus’ anticipated seismicity, estimates using various different, independent methods should ideally be considered. To provide exactly that, we set up the ISSI team ‘Seismicity on Venus: Prediction & Detection’. This is an interdisciplinary team of experts in seismology, geology, and geodynamics. Together we aim to assess the seismic activity on Venus from a theoretical and instrumental perspective. In addition to presenting our preliminary seismicity estimates from scaling Earth to Venus, we therefore also use this contribution to briefly introduce the team and its goals and present the preliminary findings from our first, week-long, dedicated in-person meeting aimed at further characterising Venus’ seismicity.

Item URL in elib:https://elib.dlr.de/196804/
Document Type:Conference or Workshop Item (Speech)
Title:Estimating the seismicity of Venus by scaling Earth's seismicity
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
van Zelst, IrisUNSPECIFIEDhttps://orcid.org/0000-0003-4698-9910UNSPECIFIED
Maia, JuliaObservatoire de la Côte d’Azur, Laboratoire Lagrange, Université Côte d’Azur, Nice, Francehttps://orcid.org/0000-0002-3605-6554UNSPECIFIED
Spühler, MoritzGerman Aerospace Center (DLR), Institute of Planetary Research, Berlin, GermanyUNSPECIFIEDUNSPECIFIED
Plesa, Ana-CatalinaUNSPECIFIEDhttps://orcid.org/0000-0003-3366-7621UNSPECIFIED
Garcia, R.ISAE-SUPAERO, Toulouse University, Toulouse, FranceUNSPECIFIEDUNSPECIFIED
Ghail, RichardRoyal Holloway University of London, Earth Sciences, Egham, United KingdomUNSPECIFIEDUNSPECIFIED
Gülcher, A.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USAhttps://orcid.org/0000-0001-5999-3463UNSPECIFIED
Horleston, A.University of BristolUNSPECIFIEDUNSPECIFIED
Kawamura, T.Institut de Physique du Globe de Paris, Paris, FranceUNSPECIFIEDUNSPECIFIED
Klaasen, S.Institute of Geophysics, Department of Earth Sciences, ETH Zürich, Zürich, Switzerlandhttps://orcid.org/0000-0003-4094-7891UNSPECIFIED
Lognonne, P.institut de physique du globe, paris, franceUNSPECIFIEDUNSPECIFIED
Orgel, C.European Space Research and Technology Centre (ESTEC), European Space Agency, Noordwijk, The NetherlandsUNSPECIFIEDUNSPECIFIED
Panning, MarkJet Propulsion Laboratory, California Institute of Technology, Pasadena, USAhttps://orcid.org/0000-0002-2041-3190UNSPECIFIED
Sabbeth, L.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USAhttps://orcid.org/0000-0001-6615-7949UNSPECIFIED
Smolinksi, K.European Space Agency ESTEC, Noordwijk, NetherlandsUNSPECIFIEDUNSPECIFIED
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:EGU23-9086
Keywords:Venus, Seismicity, Global annual seismic budget, Venusquakes
Event Title:EGU General Assembly 2023
Event Location:Vienna, Austria
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Exploration of the Solar System, R - Planetary Evolution and Life, R - Veritas, R - Project EnVision
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Physics
Deposited By: Plesa, Dr. Ana-Catalina
Deposited On:01 Sep 2023 08:00
Last Modified:01 Sep 2023 08:00

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