The global magnetic field of Mars and implications for crustal evolution

被引：232

作者：

Connerney, JEP

Acuña, MH

Wasilewski, PJ

Kletetschka, G

Ness, NF

Rème, H

Lin, RP

Mitchell, DL

机构：

[1] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[2] Univ Delaware, Bartol Res Inst, Newark, DE 19716 USA

[3] Ctr Etud Spatiale Rayonnements, F-31028 Toulouse 4, France

[4] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2001年 / 28卷 / 21期

关键词：

D O I：

10.1029/2001GL013619

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The Mars Global Surveyor spacecraft obtained globally-distributed vector magnetic field measurements approximately 400 km above the surface of Mars. These have been compiled to produce the first complete global magnetic field maps of Mars. Crustal magnetization appears dichotomized, with intense magnetization mainly confined to the ancient, heavily cratered highlands in the south. The global distribution of sources is consistent with a reversing dynamo that halted early in Mars evolution. Intense crustal magnetization requires an increased oxidation state relative to mantle-derived rock, consistent with assimilation of an aqueous component at crustal depths.

引用

页码：4015 / 4018

页数：4

共 22 条

[21] Redox state of Mars' upper mantle and crust from Eu anomalies in shergottite pyroxenes [J].