Ground magnetic survey on Mars from the Zhurong rover

Du, Aimin1,2; Ge, Yasong1,2; Wang, Huapei3; Li, Haiying4; Zhang, Ying1,2; Luo, Hao1,2; Huang, Can1,2; Shan, Lican1,2; Han, Fei3; Liu, Yang5; Zou, Yongliao5; Wang, Chi5; Pan, Yongxin2,6; Liu, Qingsong7; Mitchell, Ross N.2,8; Jia, Yang9; Chen, Baichao9; Jin, Shengyi9; Jiang, Yi10; Zhang, Tielong11,12,13; Zhu, Rixiang2,8; Gubbins, David14; Zhang, Keke10

2023-06-01

10.1038/s41550-023-02008-7

NATURE ASTRONOMY   影响因子和分区

2397-3366

Mars' magnetic field has been measured at large scale by orbiting spacecraft and at very small scale via Martian meteorites. Here we report on a ground magnetic survey on metre to kilometre scales. The Zhurong rover made vector measurements at 16 sites along a 1,089 m track in the Utopia Basin on Mars. It recorded an extremely weak magnetic field, with an order of the average intensity less than that inferred from orbit, in contrast to the large magnetic field in Elysium Planitia measured by InSight. A spacecraft measurement samples an area with radius comparable to its altitude, while a ground measurement samples an area with radius comparable to the depth of the magnetized body. The weak magnetic field measured by Zhurong indicates no magnetization anomalies for a depth of many kilometres around and below the rover's traverse. We suggest two possible explanations for the weak magnetic field: the entire Utopia Basin may have remained unmagnetized since its formation about 4 billion years ago or that the 5-km-radius ghost crater where Zhurong landed may have been been demagnetized by impact.

SCI

英语

其他

National Key R&D Program of China[2022YFF0503200] ; Macau Science and Technology Development Fund[0001/2019/A1] ; Key Research Program of the Chinese Academy of Sciences[ZDBS-SSW-TLC001] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB41010304] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA17010403] ; pre-research Project on Civil Aerospace Technologies of CNSA["D020103","D020308"] ; Shenzhen Science and Technology Program[KQTD20170810111725321] ; National Natural Science Foundation of China["42030205","42250101"] ; Key Research Programs of the Institute of Geology and Geophysics, Chinese Academy of Sciences[IGGCAS-202102]

Astronomy & Astrophysics

Astronomy & Astrophysics

WOS:001010684900004

NATURE PORTFOLIO

Web of Science

1.Chinese Acad Sci, Inst Geol & Geophys, CAS Engn Lab Deep Resources Equipment & Technol, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
3.China Univ Geosci, Sch Geophys & Geomatics, Paleomagnetism & Planetary Magnetism Lab, Wuhan, Peoples R China
4.Chinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China
5.Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
7.Southern Univ Sci & Technol, Ctr Marine Magnetism, Dept Ocean Sci & Engn, Shenzhen, Peoples R China
8.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
9.Beijing Inst Spacecraft Syst Engn, Beijing, Peoples R China
10.Macau Univ Sci & Technol, State Key Lab Lunar & Planetary Sci, Macau, Peoples R China
11.Harbin Inst Technol, Shenzhen, Peoples R China
12.Chinese Acad Sci, Ctr Excellence Comparat Planetol, Hefei, Peoples R China
13.Austrian Acad Sci, Space Res Inst, Graz, Austria
14.Univ Leeds, Sch Earth & Environm, Leeds, England

Du, Aimin,Ge, Yasong,Wang, Huapei,et al. Ground magnetic survey on Mars from the Zhurong rover[J]. NATURE ASTRONOMY,2023,7(9).

Du, Aimin.,Ge, Yasong.,Wang, Huapei.,Li, Haiying.,Zhang, Ying.,...&Zhang, Keke.(2023).Ground magnetic survey on Mars from the Zhurong rover.NATURE ASTRONOMY,7(9).

Du, Aimin,et al."Ground magnetic survey on Mars from the Zhurong rover".NATURE ASTRONOMY 7.9(2023).