000005557 001__ 5557
000005557 005__ 20220120110758.0
000005557 037__ $$aCTALK-2022-0005
000005557 100__ $$aDrilleau, Melanie
000005557 245__ $$aEstimation of the marsquakes' location and the interior structure of Mars using InSight data
000005557 260__ $$c2021
000005557 269__ $$c2021-04-30
000005557 520__ $$aThe InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) lander successfully delivered a geophysical instrument package to the Martian surface on November 26, 2018, including a broadband seismometer called SEIS (Seismic Experiment for Interior Structure). After two years of recording, seismic body waves phases of a small number of high-quality marsquakes have been clearly identified. In this work, we will present how we estimate the body waves arrival times, and how we handle them to constrain the locations of the marsquakes and the interior structure. The inverse problem relies on a Bayesian approach, to investigate a large range of possible locations and interior models. Due to the small number of data, the advantage of using such a method is to provide a quantitative measure of the uncertainties and the non-uniqueness. In order to take into account the strong variations of the crustal thickness due to the crustal dichotomy, and thus consider the seismic lateral variations, which could cause significant misinterpretations, arrival times corrections are added using crustal thickness maps obtained from gravity and topography data.
000005557 594__ $$aNO
000005557 6531_ $$aMars, SEIS, InSight
000005557 700__ $$aGarcia, Raphaël
000005557 700__ $$aSamuel, Henri
000005557 700__ $$aRivoldini, Attilio
000005557 700__ $$aWieczorek, Mark
000005557 700__ $$aLognonné, Philippe
000005557 700__ $$aPanning, Mark
000005557 700__ $$aPerrin, Clément
000005557 700__ $$aCeylan, Savas
000005557 700__ $$aSchmerr, Nick
000005557 700__ $$aKhan, Amir
000005557 700__ $$aLekic, Vedran
000005557 700__ $$aStähler, Simon
000005557 700__ $$aGiardini, Domenico
000005557 700__ $$aKim, Doyeon
000005557 700__ $$aHuang, Quancheng
000005557 700__ $$aClinton, John
000005557 700__ $$aKawamura, Taïchi
000005557 700__ $$aScholz, John-Robert
000005557 700__ $$aDavis, Paul
000005557 773__ $$t23rd EGU General Assembly, online
000005557 8560_ $$fattilio.rivoldini@observatoire.be
000005557 85642 $$ahttps://doi.org/10.5194/egusphere-egu21-14998
000005557 8564_ $$s6119966$$uhttp://publi2-as.oma.be/record/5557/files/EGU21-14998_presentation.pdf
000005557 8564_ $$s14144$$uhttp://publi2-as.oma.be/record/5557/files/EGU21-14998_presentation.gif?subformat=icon$$xicon
000005557 8564_ $$s14501$$uhttp://publi2-as.oma.be/record/5557/files/EGU21-14998_presentation.jpg?subformat=icon-180$$xicon-180
000005557 906__ $$aContributed
000005557 980__ $$aCTALKCONT