Recent advances in the verification and geologic interpretation of satellite-altitude magnetic anomalies

D. Ravat, M. Pilkington, M. Purucker, T. Sabaka, P. T. Taylor, R. R.B. von Frese, K. A. Whaler

Research output: Contribution to conferencePaperpeer-review

3 Scopus citations

Abstract

During the last decade, a number of studies have been increasingly successful in the isolation, verification, and understanding/interpretation of satellite magnetic anomaly data. High altitude, long flight line aeromagnetic data over Canada have been found compatible with Magsat and POGO magnetic anomaly data. The external magnetic fields are being estimated and modeled more realistically and have allowed better isolation of the crustal magnetic signal. Satellite-derived magnetic maps exhibit a few anomalies that are related to continent-ocean magnetization contrast, crustal thickness - heat flow variations, edges of the Cretaceous Quiet Zones and large plateaus on the ocean floor. Global models of these features allow us to use the approach of "geologic stripping"; the resulting residual magnetic anomalies over the continental United States show strong correspondence with geologic provinces and can be helpful in their geologic interpretation. Here, we present an overview of the progress made in verifying and understanding the origin of satellite-derived long-wavelength magnetic anomalies.

Original languageEnglish
StatePublished - 1998
Event1998 Society of Exploration Geophysicists Annual Meeting, SEG 1998 - New Orleans, United States
Duration: Sep 13 1998Sep 18 1998

Conference

Conference1998 Society of Exploration Geophysicists Annual Meeting, SEG 1998
Country/TerritoryUnited States
CityNew Orleans
Period9/13/989/18/98

Bibliographical note

Publisher Copyright:
© 1998 Society of Exploration Geophysicists. All rights reserved.

ASJC Scopus subject areas

  • Geophysics

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