Surface waves and crustal structure on Mars

被引：57

作者：

Kim, D. ^{[1
,2
]}

Banerdt, W. B. ^{[3
]}

Ceylan, S. ^{[1
]}

Giardini, D. ^{[1
]}

Lekic, V ^{[2
]}

Lognonne, P. ^{[4
]}

Beghein, C. ^{[5
]}

Beucler, E. ^{[6
]}

Carrasco, S. ^{[7
]}

Charalambous, C. ^{[8
]}

Clinton, J. ^{[9
]}

Drilleau, M. ^{[10
]}

Duran, C. ^{[1
]}

Golombek, M. ^{[3
]}

Joshi, R. ^{[11
]}

Khan, A. ^{[1
,12
]}

Knapmeyer-Endrun, B. ^{[7
]}

Li, J. ^{[5
]}

Maguire, R. ^{[13
]}

Pike, W. T. ^{[7
]}

Samuel, H. ^{[4
]}

Schimmel, M. ^{[14
]}

Schmerr, N. C. ^{[2
]}

Stahler, S. C. ^{[1
]}

Stutzmann, E. ^{[4
]}

Wieczorek, M. ^{[15
]}

Xu, Z. ^{[4
]}

Batov, A. ^{[16
]}

Bozdag, E. ^{[17
]}

Dahmen, N. ^{[1
]}

Davis, P. ^{[5
]}

Gudkova, T. ^{[16
]}

Horleston, A. ^{[18
]}

Huang, Q. ^{[17
]}

Kawamura, T. ^{[4
]}

King, S. D. ^{[19
]}

McLennan, S. M. ^{[20
]}

Nimmo, F. ^{[21
]}

Plasman, M. ^{[4
]}

Plesa, A. C. ^{[22
]}

Stepanova, I. E. ^{[16
]}

Weidner, E. ^{[5
]}

Zenhausern, G. ^{[1
]}

Daubar, I. J. ^{[23
]}

Fernando, B. ^{[24
]}

Garcia, R. F. ^{[10
]}

Posiolova, L., V ^{[25
]}

Panning, M. P. ^{[3
]}

机构：

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

[2] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[3] Univ Maryland, Dept Geol, College Pk, MD USA

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

[5] Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA

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

[7] Univ Cologne, Bensberg Observ, Bergisch Gladbach, Germany

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

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

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

[11] Max Planck Inst Solar Syst Res, Gottingen, Germany

[12] Univ Zurich, Phys Inst, Zurich, Switzerland

[13] Univ Illinois, Dept Geol, Champaign, IL USA

[14] CSIC, Geosci Barcelona, Barcelona, Spain

[15] Univ Cote dAzur, Observ Cote dAzur, Lab Lagrange, CNRS, Nice, France

[16] Russian Acad Sci, Schmidt Inst Phys Earth, Moscow, Russia

[17] Colorado Sch Mines, Dept Geophys, Golden, CO USA

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

[19] Virginia Tech, Dept Geosci, Blacksburg, VA USA

[20] SUNY Stony Brook, Dept Geosci, Stony Brook, NY USA

[21] Univ Calif Santa Cruz, Dept Earth & Planetary Sci, Santa Cruz, CA USA

[22] German Aerosp Ctr DLR, Inst Planetary Res, Berlin, Germany

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

[24] Univ Oxford, Dept Earth Sci, Oxford, England

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

来源：

SCIENCE | 2022年 / 378卷 / 6618期

基金：

美国国家航空航天局;

关键词：

UPPER-MANTLE; INSIGHT; GEOLOGY; SITE;

D O I：

10.1126/science.abq7157

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We detected surface waves from two meteorite impacts on Mars. By measuring group velocity dispersion along the impact-lander path, we obtained a direct constraint on crustal structure away from the InSight lander. The crust north of the equatorial dichotomy had a shear wave velocity of approximately 3.2 kilometers per second in the 5- to 30-kilometer depth range, with little depth variation. This implies a higher crustal density than inferred beneath the lander, suggesting either compositional differences or reduced porosity in the volcanic areas traversed by the surface waves. The lower velocities and the crustal layering observed beneath the landing site down to a 10-kilometer depth are not a global feature. Structural variations revealed by surface waves hold implications for models of the formation and thickness of the martian crust. Copyright © 2022 The Authors, some rights reserved;

引用

页码：417 / 421

页数：5

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