Platform–corrected analyses of near-bottom magnetic data acquired by autonomous underwater vehicles

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ID: 322358
2026
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Abstract
Summary Autonomous underwater vehicles (AUVs) provide high-resolution magnetic measurements essential for investigating crustal accretion, tectonic segmentation, and hydrothermal processes at mid-ocean ridges. However, raw magnetometer measurements are strongly influenced by platform-induced magnetic fields, attitude-dependent biases, and navigation uncertainties that must be corrected to recover geophysically meaningful anomaly fields. We apply a procedure to measurements from AUVs which includes platform independent scalar calibration, transformation into geographic reference frames, spin-based removal of permanent and induced vehicle magnetization, and computation of magnetic anomalies relative to the International Geomagnetic Reference Field. The framework also incorporates a two-dimensional spectral upward continuation to reconcile altitude variations, thereby recovering anomalies at a uniform reference level. Application of this system to AUV datasets from the East Pacific Rise and Mid-Atlantic Ridge demonstrates effective suppression of platform biases, improved crossover consistency, and the generation of internally coherent geomagnetic anomaly fields suitable for subsequent analysis and mapping.
Reference Key
openalex_W7170157901 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Vaibhav Vijay Ingale, Jeffrey Gee, Ross Parnell‑Turner
Journal geophysical journal international
Year 2026
DOI
10.1093/gji/ggag279
URL
https://doi.org/10.1093/gji/ggag279
Keywords Keywords not found

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