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An altitude‐normalized magnetic map of Mars and its interpretation

Purucker, M., Ravat, D., Frey, H., Voorhies, C., Sabaka, T., Acuña, M.·2000·Geophysical Research Letters

Abstract

Techniques developed for the reduction and analysis of terrestrial satellite magnetic field data are used to better understand the magnetic field observations made by Mars Global Surveyor. A global distribution of radial (B r) magnetic field observations and associated uncertainties is inverted for an equivalent source magnetization distribution and then used to generate an altitude‐normalized map of B r at 200 km. The observations are well‐represented by a potential function of crustal origin, consistent with a remanent origin for the Martian magnetic features. The correlation between the 40546 B r observations and B r calculated from the magnetization solution at observation locations is 0.978. For a magnetization distribution confined to a 50 km layer, calculated magnetizations range from ‐22 to +17 A/m. We see correlations with tectonics that were only hinted at in earlier maps. Magnetic features appear to be truncated against Valles Marineris and Ganges Chasma, suggestive of a major change in crustal properties associated with faulting.

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Metadata

Authors
Purucker, M., Ravat, D., Frey, H., Voorhies, C., Sabaka, T., & Acuña, M.
Venue
Geophysical Research Letters
Published
2000-08-15
Volume
27
Issue
16
Pages
2449-2452
ISSN
  • 0094-8276 (ISSN-L)
  • 1944-8007
OpenAlex
W2128400667
Cited by
184
References
1
FWCI
8.40
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: An altitude‐normalized magnetic map of Mars and its interpretation. https://app.cochat.ai/papers/10.1029/2000gl000072
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Purucker, M., Ravat, D., Frey, H., Voorhies, C., Sabaka, T., & Acuña, M. (2000). An altitude‐normalized magnetic map of Mars and its interpretation. Geophysical Research Letters. https://doi.org/10.1029/2000gl000072

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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