Global Distribution of Crustal Magnetization Discovered by the Mars Global Surveyor MAG/ER Experiment-Reference-Cited by-同舟云学术

Global Distribution of Crustal Magnetization Discovered by the Mars Global Surveyor MAG/ER Experiment

Published:1999-04-30 Issue:5415 Volume:284 Page:790-793
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Acuña M. H.¹,Connerney J. E. P.¹,F. N.,Ness ²,Lin R. P.³,Mitchell D.³,Carlson C. W.³,McFadden J.³,Anderson K. A.³,Rème H.⁴,Mazelle C.⁴,Vignes D.⁴,Wasilewski P.¹,Cloutier P.⁵

Affiliation:

1. NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.

2. Bartol Research Institute, University of Delaware, Newark, DE 19716, USA.

3. Space Sciences Laboratory, University of California, Berkeley, CA 94720, USA.

4. Centre d'Etude Spatiale des Rayonnements, 31028 Toulouse Cedex 4, France.

5. Department of Space Physics and Astronomy, Rice University, Houston, TX, 77005, USA.

Abstract

Vector magnetic field observations of the martian crust were acquired by the Mars Global Surveyor (MGS) magnetic field experiment/electron reflectometer (MAG/ER) during the aerobraking and science phasing orbits, at altitudes between ∼100 and 200 kilometers. Magnetic field sources of multiple scales, strength, and geometry were observed. There is a correlation between the location of the sources and the ancient cratered terrain of the martian highlands. The absence of crustal magnetism near large impact basins such as Hellas and Argyre implies cessation of internal dynamo action during the early Naochian epoch (∼4 billion years ago). Sources with equivalent magnetic moments as large as 1.3 × 10 17 ampere-meter 2 in the Terra Sirenum region contribute to the development of an asymmetrical, time-variable obstacle to solar wind flow around Mars.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference21 articles.

1. M. H. Acuña et. al. Science 279 1676 (1998).

2. M. H. Acuña et. al. J. Geophys. Res. 97 7799 (1992).

3. The Mars Global Surveyor magnetic field experiment provides fast (up to 32 samples per second) and precise (12-bit) vector measurements of the ambient field over the range of 4 to 65 536 nT per axis. It includes two fluxgate magnetometers mounted at the outer edge of the articulated solar panels and an electron reflectometer mounted on the spacecraft body that measures the local electron distribution function in the range of ∼1 to 20 KeV to remotely sense the strength of magnetic fields of planetary origin at the top of the martian atmosphere. The observations reported here were acquired by the twin fluxgate magnetometer system.

4. The measurement error is determined primarily by incomplete knowledge of spacecraft-generated magnetic fields. These are associated with the electrical power system and uncompensated permanent magnets present in amplifiers mounted behind the spacecraft high gain antenna. During the cruise phase spacecraft maneuvers in a fixed solar panel orientation were used to determine the instrument offsets to an estimated accuracy of 0.5 nT. In the aerobraking orbits frequent spacecraft reconfigurations and articulations of the solar panels degrade the accuracy of the error estimate yielding the value quoted in the paper. The twin magnetometer configuration is used to identify spacecraft-generated magnetic fields and distinguish them from ambient field changes.

5. Le Mouël J. L., Courtillot V., Ducruix J., Geophys. J. R. Astron. Soc. 42, 251 (1975);

Cited by 904 articles. 订阅此论文施引文献订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献

1. Structure and transport properties of FeS at planetary core conditions;Earth and Planetary Science Letters;2024-11

2. A general climatology of categorized Martian ionospheric irregularities;Science China Earth Sciences;2024-09-04

3. Source of Drift-dispersed Electrons in Martian Crustal Magnetic Fields;The Astrophysical Journal;2024-09-01

4. 火星电离层不规则体的分类研究;SCIENTIA SINICA Terrae;2024-09-01

5. MCC’s First-Ever Observation of a High-Altitude Plume Cloud on Mars: Linkages with Space Weather?;Journal of the Indian Society of Remote Sensing;2024-08-29