The role of the Martian crustal magnetic fields in controlling ionospheric loss

被引：35

作者：

Brecht, Stephen H. ^{[1
]}

Ledvina, Stephen A. ^{[2
]}

机构：

[1] Bay Area Res Corp, Orinda, CA 94595 USA

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

来源：

GEOPHYSICAL RESEARCH LETTERS | 2014年 / 41卷 / 15期

关键词：

Mars crustal magnetic fields; ionospheric loss; hybrid simulations; SOLAR-WIND INTERACTION; ION ESCAPE; MARS; PHOBOS; MHD;

D O I：

10.1002/2014GL060841

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

A hybrid particle code has been used to examine the interaction of the solar wind with Mars. It is found that the presence of the crustal magnetic fields modifies the heavy ion (O+ and O-2(+)) loss rates. In the case of the solar minimum situation the modification was found to be significant and reported in Brecht and Ledvina (2012). In this paper both solar minimum and solar maximum results are reported and compared with data. The crustal magnetic fields reduce the ionospheric loss rate; and when the energy limits imposed on the data fits are considered, the results of the simulations are in reasonable agreement with data. The agreement with the data provides a strong argument for the physical control demonstrated by the simulations being realistic.

引用

收藏

页码：5340 / 5346

页数：7

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