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Mercury's Northern Rise Core-Field Magnetic Anomaly.

ABSTRACT: We use magnetic field data collected in orbit around Mercury by the MErcury Surface, Space ENvironment, GEochemistry and Ranging satellite, to detect a regional magnetic field anomaly that is spatially associated with Mercury's Northern Rise topographic signature. Regional spectral analysis indicates a source depth at or below the core-mantle boundary, and hence the anomaly is of core, not crustal, origin. This observation supports previous studies linking the Northern Rise to a deep-seated gravity anomaly and reveals connections among core, mantle, and crustal dynamics, likely enabled by Mercury's thin mantle.

SUBMITTER: Plattner AM

PROVIDER: S-EPMC9285016 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature

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Mercury's Northern Rise Core-Field Magnetic Anomaly.

Plattner Alain M AM Johnson Catherine L CL

Geophysical research letters 20210902 17

We use magnetic field data collected in orbit around Mercury by the MErcury Surface, Space ENvironment, GEochemistry and Ranging satellite, to detect a regional magnetic field anomaly that is spatially associated with Mercury's Northern Rise topographic signature. Regional spectral analysis indicates a source depth at or below the core-mantle boundary, and hence the anomaly is of core, not crustal, origin. This observation supports previous studies linking the Northern Rise to a deep-seated grav ...[more]

PMID: 35846180

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