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10 - The Global Lithospheric Magnetic Field

World Magnetic Anomaly Maps and Models

from Part III - Spatial and Temporal Variations of the Geomagnetic Field

Published online by Cambridge University Press:  25 October 2019

By
Vincent Lesur  and
Erwan Thébault
Edited by
Mioara Mandea ,
Monika Korte ,
Andrew Yau  and
Eduard Petrovsky
Mioara Mandea
Affiliation:
Centre National d'études Spatiales, France
Monika Korte
Affiliation:
GeoforschungsZentrum, Helmholtz-Zentrum, Potsdam
Andrew Yau
Affiliation:
University of Calgary
Eduard Petrovsky
Affiliation:
Academy of Sciences of the Czech Republic, Prague
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Summary

The magnetic field generated in the Earth’s lithosphere carries information on the Earth history and tectonics. It is therefore worthwhile studying, but gathering magnetic data for this purpose is a task requiring time and significant ressources. This has been the main objective of the World Digital Magnetic Anomaly Map (WDMAM) project. We recall here the main steps that led to the first and second versions of the map. We further discuss the models that have been derived from the map, and finally describe recent works to interpret these models in term of magnetisation of the crust. We see these recent developments as major steps forward for an efficient exploitation of the magnetic data collected near the surface of the Earth.

Keywords

geomagnetic fieldlithospheric fieldmagnetic anomaliesmagnetisationWDMAM
Type
Chapter
Information
Geomagnetism, Aeronomy and Space Weather
A Journey from the Earth's Core to the Sun
 , pp. 133 - 140
Publisher: Cambridge University Press
Print publication year: 2019

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