Published August 2020
| Version v1
Journal article
A New Crater Near InSight: Implications for Seismic Impact Detectability on Mars
Creators
- Daubar, I.
- Lognonné, P.
- Teanby, N.
- Collins, G.
- Clinton, J.
- Stähler, S.
- Spiga, A.
- Karakostas, F.
- Ceylan, S.
- Malin, M.
- Mcewen, A.
- Maguire, R.
- Charalambous, C.
- Onodera, K.
- Lucas, Antoine
- Rolland, Lucie
- Vaubaillon, J.
- Kawamura, T.
- Böse, M.
- Horleston, A.
- van Driel, M.
- Stevanović, J.
- Miljković, K.
- Fernando, B.
- Huang, Q.
- Giardini, D.
- Larmat, C.
- Leng, K.
- Rajšić, A.
- Schmerr, N.
- Wójcicka, N.
- Pike, T.
- Wookey, J.
- Rodriguez, S.
- Garcia, R.
- Banks, M.
- Margerin, L.
- Posiolova, L.
- Banerdt, B.
Contributors
Others:
- Jet Propulsion Laboratory (JPL) ; NASA-California Institute of Technology (CALTECH)
- Institut de Physique du Globe de Paris (IPG Paris)
- School of Earth Sciences [Bristol] ; University of Bristol [Bristol]
- Department of Earth Science and Engineering [Imperial College London] ; Imperial College London
- Swiss Seismological Service
- Institute of Geophysics [ETH Zürich] ; Department of Earth Sciences [Swiss Federal Institute of Technology - ETH Zürich] (D-ERDW) ; Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich)-Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich)
- Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) ; Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris ; École normale supérieure - Paris (ENS-PSL) ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)
- 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)
- Géoazur (GEOAZUR 7329) ; Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur ; Université Côte d'Azur (UniCA)-Université Côte d'Azur (UniCA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud])
- Institut de Mécanique Céleste et de Calcul des Ephémérides (IMCCE) ; Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Lille-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
- Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich)
- University of Bristol [Bristol]
- National Institute of Standards and Technology [Gaithersburg] (NIST)
- Los Alamos National Laboratory (LANL)
- Laboratoire de Génie Civil et Génie Mécanique (LGCGM) ; Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes) ; Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)
- Department of Geology [College Park] ; University of Maryland [College Park] ; University of Maryland System-University of Maryland System
- Imperial College London
- Centre d'Etude de Saclay ; Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
- NASA Goddard Space Flight Center (GSFC)
- Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) ; Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement (INRAE)
- DP180100661 and DE180100584, Australian Research Council
- ST/S000615/1 and ST/S001514/1, Science and Technology Facilities Council
- ETH‐06 17‐02, International Foundation for Ethical Research
- ST/R002096/1, UK Space Agency
- ANR-14-CE36-0012,SEISMARS,Seismology on Mars(2014)
- ANR-19-CE31-0008,MAGIS,MArs Geophysical InSight(2019)
Description
A new 1.5 m diameter impact crater was discovered on Mars only ~40 km from the InSight lander. Context camera images constrained its formation between 21 February and 6 April 2019; follow‐up High Resolution Imaging Science Experiment images resolved the crater. During this time period, three seismic events were identified in InSight data. We derive expected seismic signal characteristics and use them to evaluate each of the seismic events. However, none of them can definitively be associated with this source. Atmospheric perturbations are generally expected to be generated during impacts; however, in this case, no signal could be identified as related to the known impact. Using scaling relationships based on the terrestrial and lunar analogs and numerical modeling, we predict the amplitude, peak frequency, and duration of the seismic signal that would have emanated from this impact. The predicted amplitude falls near the lowest levels of the measured seismometer noise for the predicted frequency. Hence, it is not surprising this impact event was not positively identified in the seismic data. Finding this crater was a lucky event as its formation this close to InSight has a probability of only ~0.2, and the odds of capturing it in before and after images are extremely low. We revisit impact‐seismic discriminators in light of real experience with a seismometer on the Martian surface. Using measured noise of the instrument, we revise our previous prediction of seismic impact detections downward, from ~a few to tens, to just ~2 per Earth year, still with an order of magnitude uncertainty.
Abstract
International audienceAdditional details
Identifiers
- URL
- https://hal.science/hal-02933048
- URN
- urn:oai:HAL:hal-02933048v2
Origin repository
- Origin repository
- UNICA