IDENTIFYING VARYING MAGNETIC ANOMALIES USING GEOMAGNETIC MONITORING

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Detail(s)

Original languageEnglish
Pages (from-to)6411-6440
Journal / PublicationDiscrete and Continuous Dynamical Systems
Volume40
Issue number11
Publication statusPublished - Nov 2020

Abstract

We are concerned with the inverse problem of identifying magnetic anomalies with varying parameters beneath the Earth using geomagnetic monitoring. Observations of the change in Earth's magnetic field-the secular variation-provide information about the anomalies as well as their variations. In this paper, we rigorously establish the unique recovery results for this magnetic anomaly detection problem. We show that one can uniquely recover the locations, the variation parameters including the growth or decaying rates as well as their material parameters of the anomalies. This paper extends the existing results in [9] by two of the authors to the more practical and challenging scenario with varying anomalies.

Research Area(s)

  • Geomagnetic monitoring, magnetic anomaly detection, varying anomalies, unique recovery, inverse problem