Present‐Day Mars' Seismicity Predicted From 3‐D Thermal Evolution Models of Interior Dynamics
Abstract The Interior Exploration using Seismic Investigations, Geodesy and Heat Transport mission, to be launched in 2018, will perform a comprehensive geophysical investigation of Mars in situ. The Seismic Experiment for Interior Structure package aims to detect global and regional seismic events...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-03-01
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| Series: | Geophysical Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/2017GL076124 |
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| author | A.‐C. Plesa M. Knapmeyer M. P. Golombek D. Breuer M. Grott T. Kawamura P. Lognonné N. Tosi R. C. Weber |
| author_facet | A.‐C. Plesa M. Knapmeyer M. P. Golombek D. Breuer M. Grott T. Kawamura P. Lognonné N. Tosi R. C. Weber |
| author_sort | A.‐C. Plesa |
| collection | DOAJ |
| description | Abstract The Interior Exploration using Seismic Investigations, Geodesy and Heat Transport mission, to be launched in 2018, will perform a comprehensive geophysical investigation of Mars in situ. The Seismic Experiment for Interior Structure package aims to detect global and regional seismic events and in turn offer constraints on core size, crustal thickness, and core, mantle, and crustal composition. In this study, we estimate the present‐day amount and distribution of seismicity using 3‐D numerical thermal evolution models of Mars, taking into account contributions from convective stresses as well as from stresses associated with cooling and planetary contraction. Defining the seismogenic lithosphere by an isotherm and assuming two end‐member cases of 573 K and the 1073 K, we determine the seismogenic lithosphere thickness. Assuming a seismic efficiency between 0.025 and 1, this thickness is used to estimate the total annual seismic moment budget, and our models show values between 5.7 × 1016 and 3.9 × 1019 Nm. |
| format | Article |
| id | doaj-art-5ff7350487e14cb3a0ecd3388531fecf |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2018-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-5ff7350487e14cb3a0ecd3388531fecf2025-08-20T01:58:15ZengWileyGeophysical Research Letters0094-82761944-80072018-03-014562580258910.1002/2017GL076124Present‐Day Mars' Seismicity Predicted From 3‐D Thermal Evolution Models of Interior DynamicsA.‐C. Plesa0M. Knapmeyer1M. P. Golombek2D. Breuer3M. Grott4T. Kawamura5P. Lognonné6N. Tosi7R. C. Weber8German Aerospace Center (DLR) Berlin GermanyGerman Aerospace Center (DLR) Berlin GermanyJet Propulsion Laboratory California Institute of Technology Pasadena CA USAGerman Aerospace Center (DLR) Berlin GermanyGerman Aerospace Center (DLR) Berlin GermanyInstitut de Physique du Globe de Paris Université Paris Diderot–Sorbonne Paris Cité Paris FranceInstitut de Physique du Globe de Paris Université Paris Diderot–Sorbonne Paris Cité Paris FranceGerman Aerospace Center (DLR) Berlin GermanyNASA Marshall Space Flight Center Huntsville AL USAAbstract The Interior Exploration using Seismic Investigations, Geodesy and Heat Transport mission, to be launched in 2018, will perform a comprehensive geophysical investigation of Mars in situ. The Seismic Experiment for Interior Structure package aims to detect global and regional seismic events and in turn offer constraints on core size, crustal thickness, and core, mantle, and crustal composition. In this study, we estimate the present‐day amount and distribution of seismicity using 3‐D numerical thermal evolution models of Mars, taking into account contributions from convective stresses as well as from stresses associated with cooling and planetary contraction. Defining the seismogenic lithosphere by an isotherm and assuming two end‐member cases of 573 K and the 1073 K, we determine the seismogenic lithosphere thickness. Assuming a seismic efficiency between 0.025 and 1, this thickness is used to estimate the total annual seismic moment budget, and our models show values between 5.7 × 1016 and 3.9 × 1019 Nm.https://doi.org/10.1002/2017GL076124Marsthermal evolutionseismicityinterior dynamicsInSight |
| spellingShingle | A.‐C. Plesa M. Knapmeyer M. P. Golombek D. Breuer M. Grott T. Kawamura P. Lognonné N. Tosi R. C. Weber Present‐Day Mars' Seismicity Predicted From 3‐D Thermal Evolution Models of Interior Dynamics Geophysical Research Letters Mars thermal evolution seismicity interior dynamics InSight |
| title | Present‐Day Mars' Seismicity Predicted From 3‐D Thermal Evolution Models of Interior Dynamics |
| title_full | Present‐Day Mars' Seismicity Predicted From 3‐D Thermal Evolution Models of Interior Dynamics |
| title_fullStr | Present‐Day Mars' Seismicity Predicted From 3‐D Thermal Evolution Models of Interior Dynamics |
| title_full_unstemmed | Present‐Day Mars' Seismicity Predicted From 3‐D Thermal Evolution Models of Interior Dynamics |
| title_short | Present‐Day Mars' Seismicity Predicted From 3‐D Thermal Evolution Models of Interior Dynamics |
| title_sort | present day mars seismicity predicted from 3 d thermal evolution models of interior dynamics |
| topic | Mars thermal evolution seismicity interior dynamics InSight |
| url | https://doi.org/10.1002/2017GL076124 |
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