The global magnetic field of Mars and implications for crustal evolution
Abstract
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.
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If plate tectonics ever initiated at all on Mars, it ceased rapidly.
“If plate tectonics ever initiated at all, it ceased rapidly (Connerney et al. 2001; Solomon et al. 2005).”
From The Climate of Early Mars (2016) · cites this paper as Connerney et al. 2001
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References 22 · Cited by 290
- Authors
- Connerney, J. E. P., Acuña, M. H., Wasilewski, P. J., Kletetschka, G., Ness, N. F., Rème, H., Lin, R. P., & Mitchell, D. L.
- Affiliations
- Goddard Space Flight Center (US)
- University of Delaware (US)
- Space Sciences Laboratory (US)
- Venue
- Geophysical Research Letters
- Publisher
- American Geophysical Union (AGU)
- Published
- 2001-11
- Volume
- 28
- Issue
- 21
- Pages
- 4015-4018
- ISSN
- 0094-8276 (ISSN-L)
- 1944-8007
- OpenAlex
- W1998480042
- Cited by
- 290
- References
- 22
- Citations by year
- 2026: 5 · 2025: 5 · 2024: 10 · 2023: 9 · 2022: 14 · 2021: 10 · 2020: 10 · 2019: 5 · 2018: 9 · 2017: 9 · 2016: 12 · 2015: 13 · 2014: 8 · 2013: 11 · 2012: 9
- FWCI
- 7.95
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Geophysical Research Letters (publishedVersion)
- Funders
- Association of Canadian Universities for Research in Astronomy
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Planetary Science and Exploration
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astro and Planetary Science
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Geomagnetism and Paleomagnetism Studies
- Keywords
- crustal magnetization, Mars Global Surveyor, crustal evolution
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Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
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