Academic Journal
Scattering Attenuation of the Martian Interior through Coda Wave Analysis
| العنوان: | Scattering Attenuation of the Martian Interior through Coda Wave Analysis |
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| المؤلفون: | Karakostas, Foivos, Schmerr, Nicholas, Maguire, Ross, Huang, Quancheng, Kim, Doyeon, Lekic, Vedran, Margerin, Ludovic, Nunn, Ceri, Menina, Sabrina, Kawamura, Taichi, Lognonné, Philippe, Giardini, Domenico, Banerdt, Bruce |
| المساهمون: | Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS), Institut de Physique du Globe de Paris (IPGP (UMR_7154)), Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), ANR-19-CE31-0008,MAGIS,MArs Geophysical InSight(2019) |
| المصدر: | ISSN: 0037-1106 ; Bulletin of the Seismological Society of America ; https://hal.science/hal-03406123 ; Bulletin of the Seismological Society of America, 2021, ⟨10.1785/0120210253⟩. |
| بيانات النشر: | HAL CCSD Seismological Society of America |
| سنة النشر: | 2021 |
| المجموعة: | Université Toulouse III - Paul Sabatier: HAL-UPS |
| مصطلحات موضوعية: | [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
| الوصف: | International audience ; We investigate the scattering attenuation characteristics of the Martian crust and uppermost mantle to understand the structure of the Martian interior. We examine the energy decay of the spectral envelopes for 21 high-quality Martian seismic events from Sol 128 to Sol 500 of InSight operations. We use the model of Dainty et al. (1974b) to approximate the behavior of energy envelopes resulting from scattered wave propagation through a single diffusive layer over an elastic half-space. Using a grid search, we mapped the layer parameters that fit the observed InSight data envelopes. The single diffusive layer model provided better fits to the observed energy envelopes for High Frequency (HF) and Very High Frequency (VF) than for the Low Frequency (LF) and Broadband (BB) events. This result is consistent with the suggested source depths (Giardini et al., 2020) for these families of events and their expected interaction with a shallow scattering layer. The shapes of the observed data envelopes do not show a consistent pattern with event distance, suggesting that the diffusivity and scattering layer thickness is non-uniform in the vicinity of InSight at Mars. Given the consistency in the envelope shapes between HF and VF events across epicentral distances and the tradeoffs between the parameters that control scattering, the dimensions of the scattering layer remain unconstrained but require that scattering strength decreases with depth and that the rate of decay in scattering strength is fastest near the surface. This is generally consistent with the processes that would form scattering structures in planetary lithospheres. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1785/0120210253 |
| الاتاحة: | https://hal.science/hal-03406123 https://hal.science/hal-03406123v1/document https://hal.science/hal-03406123v1/file/Scattering_Attenuation_of_the_Martian_Interior_through_Coda_Wave_Analysis___FINAL.pdf https://doi.org/10.1785/0120210253 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.CB0C455 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1785/0120210253 |
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