Newly formed craters on Mars located using seismic and acoustic wave data from InSight

被引：58

作者：

Garcia, Raphael F. ^{[1
]}

Daubar, Ingrid J. ^{[2
]}

Beucler, Eric ^{[3
,4
]}

Posiolova, Liliya, V ^{[5
]}

Collins, Gareth S. ^{[6
]}

Lognonne, Philippe ^{[7
]}

Rolland, Lucie ^{[8
]}

Xu, Zongbo ^{[7
]}

Wojcicka, Natalia ^{[6
]}

Spiga, Aymeric ^{[9
,10
]}

Fernando, Benjamin ^{[11
]}

Speth, Gunnar ^{[5
]}

Martire, Leo ^{[12
]}

Rajsic, Andrea ^{[13
,14
]}

Miljkovic, Katarina ^{[13
]}

Sansom, Eleanor K. ^{[13
]}

Charalambous, Constantinos ^{[15
]}

Ceylan, Savas ^{[16
]}

Menina, Sabrina ^{[7
]}

Margerin, Ludovic ^{[17
]}

Lapeyre, Remi ^{[18
]}

Neidhart, Tanja ^{[13
]}

Teanby, Nicholas A. ^{[19
]}

Schmerr, Nicholas C. ^{[20
]}

Bonnin, Mickael ^{[3
,4
]}

Froment, Marouchka ^{[7
,21
]}

Clinton, John F. ^{[22
]}

Karatekin, Ozgur ^{[23
]}

Dahmen, Nikolaj L. ^{[16
]}

Horleston, Anna ^{[19
]}

Kawamura, Taichi ^{[7
]}

Plasman, Matthieu ^{[7
]}

Giardini, Domenico ^{[16
]}

Panning, Mark ^{[12
]}

Malin, Mike ^{[5
]}

Banerdt, William Bruce ^{[12
]}

Stahler, Simon C. ^{[16
]}

Duran, Cecilia ^{[16
]}

Zenhausern, Geraldine ^{[16
]}

机构：

[1] Univ Toulouse, Inst Super Aeronaut & Espace ISAE SUPAERO, Toulouse, France

[2] Brown Univ, Dept Earth Environm & Planetary Sci, Providence, RI 02912 USA

[3] Nantes Univ, Univ Angers, Le Mans Univ, CNRS,UMR 6112,Lab Planetol & Geosci, Nantes, France

[4] Nantes Univ, Univ Angers, Observ Sci Univers Nantes Atlantique, CNRS,UGE,CNAM,UAR 3281, Nantes, France

[5] Malin Space Sci Syst, San Diego, CA USA

[6] Imperial Coll, Dept Earth Sci & Engn, London, England

[7] Univ Paris Cite, Inst Phys Globe Paris, CNRS, Paris, France

[8] Univ Cote dAzur, Observ Cote dAzur, CNRS, IRD,Geoazur, Valbonne, France

[9] Sorbonne Univ, Lab Meteorol Dynam, Inst Pierre Simon Laplace LMD IPSL, Ctr Natl Rech Sci CNRS,Ecole Polytech, Paris, France

[10] Inst Univ France IUF, Paris, France

[11] Univ Oxford, Dept Phys, Oxford, England

[12] CALTECH, Jet Prop Lab, Pasadena, CA USA

[13] Curtin Univ, Space Sci & Technol Ctr, Sch Earth & Planetary Sci, Perth, WA, Australia

[14] Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA

[15] Imperial Coll London, Dept Elect & Elect Engn, London, England

[16] Swiss Fed Inst Technol, Inst Geophys, Zurich, Switzerland

[17] Univ Toulouse III Paul Sabatier, Inst Rech Astrophys & Planetol, CNES, CNRS, Toulouse, France

[18] Ctr Natl Etud Spatiales, Toulouse, France

[19] Univ Bristol, Sch Earth Sci, Bristol, Avon, England

[20] Univ Maryland, Dept Geol, College Pk, MD 20742 USA

[21] Los Alamos Natl Lab, Earth & Environm Sci Div, Los Alamos, NM, Mexico

[22] Swiss Fed Inst Technol, Swiss Seismol Serv, Zurich, Switzerland

[23] Royal Observ Belgium, Brussels, Belgium

来源：

NATURE GEOSCIENCE | 2022年 / 15卷 / 10期

基金：

澳大利亚研究理事会; 美国国家航空航天局;

关键词：

METEORITE IMPACTS; ATMOSPHERE; EXPLOSION; MOON;

D O I：

10.1038/s41561-022-01014-0

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Impact-induced acoustic and seismic wave events on Mars recorded by the InSight lander's seismometer have been traced to fresh craters observed in spacecraft imagery. Meteoroid impacts shape planetary surfaces by forming new craters and alter atmospheric composition. During atmospheric entry and impact on the ground, meteoroids excite transient acoustic and seismic waves. However, new crater formation and the associated impact-induced mechanical waves have yet to be observed jointly beyond Earth. Here we report observations of seismic and acoustic waves from the NASA InSight lander's seismometer that we link to four meteoroid impact events on Mars observed in spacecraft imagery. We analysed arrival times and polarization of seismic and acoustic waves to estimate impact locations, which were subsequently confirmed by orbital imaging of the associated craters. Crater dimensions and estimates of meteoroid trajectories are consistent with waveform modelling of the recorded seismograms. With identified seismic sources, the seismic waves can be used to constrain the structure of the Martian interior, corroborating previous crustal structure models, and constrain scaling relationships between the distance and amplitude of impact-generated seismic waves on Mars, supporting a link between the seismic moment of impacts and the vertical impactor momentum. Our findings demonstrate the capability of planetary seismology to identify impact-generated seismic sources and constrain both impact processes and planetary interiors.

引用

页码：774 / +

页数：20

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