Ground penetrating radar observations of subsurface structures in the floor of Jezero crater, Mars

被引：48

作者：

Hamran, Svein-Erik ^{[1
,2
]}

Paige, David A. ^{[3
]}

Allwood, Abigail ^{[4
]}

Amundsen, Hans E. F. ^{[5
]}

Berger, Tor ^{[1
,2
]}

Brovoll, Sverre ^{[1
,2
]}

Carter, Lynn ^{[6
]}

Casademont, Titus M. ^{[1
,2
]}

Damsgard, Leif ^{[1
,2
]}

Dypvik, Henning ^{[1
,2
]}

Eide, Sigurd ^{[1
,2
]}

Fairen, Alberto G. ^{[7
,8
]}

Ghent, Rebecca ^{[9
]}

Kohler, Jack ^{[10
]}

Mellon, Michael T. ^{[8
]}

Nunes, Daniel C. ^{[4
]}

Plettemeier, Dirk ^{[11
]}

Russell, Patrick ^{[3
]}

Siegler, Matt ^{[9
]}

Oyan, Mats Jorgen ^{[1
,2
]}

机构：

[1] Univ Oslo, Kjeller, Norway

[2] Univ Oslo, Oslo, Norway

[3] Univ Calif Los Angeles, Los Angeles, CA USA

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

[5] Vestfonna Geophys, Trondheim, Norway

[6] Univ Arizona, Tucson, AZ USA

[7] Ctr Astrobiol CSIC INTA, Madrid, Spain

[8] Cornell Univ, Ithaca, NY USA

[9] Planetary Sci Inst, Tucson, AZ USA

[10] Norwegian Polar Res Inst, Tromso, Norway

[11] Tech Univ Dresden, Dresden, Germany

来源：

SCIENCE ADVANCES | 2022年 / 8卷 / 34期

基金：

美国国家航空航天局; 欧洲研究理事会;

关键词：

DEPOSITS; DELTA; OLIVINE; HISTORY; ROCKS; FAN;

D O I：

10.1126/sciadv.abp8564

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：

The Radar Imager for Mars Subsurface Experiment instrument has conducted the first rover-mounted groundpenetrating radar survey of the Martian subsurface. A continuous radar image acquired over the Perseverance rover's initial similar to 3-kilometer traverse reveals electromagnetic properties and bedrock stratigraphy of the Jezero crater floor to depths of similar to 15 meters below the surface. The radar image reveals the presence of ubiquitous strongly reflecting layered sequences that dip downward at angles of up to 15 degrees from horizontal in directions normal to the curvilinear boundary of and away from the exposed section of the Seitah formation. The observed slopes, thicknesses, and internal morphology of the inclined stratigraphic sections can be interpreted either as magmatic layering formed in a differentiated igneous body or as sedimentary layering commonly formed in aqueous environments on Earth. The discovery of buried structures on the Jezero crater floor is potentially compatible with a history of igneous activity and a history of multiple aqueous episodes.

引用

页数：7

共 47 条

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