International geomagnetic reference field—Its evolution and the difference in total field intensity between new and old models for 1965

International geomagnetic reference field—Its evolution and the difference in total field intensity between new and old models for 1965–1980

Published:1983-12 Issue:12 Volume:48 Page:1691-1696
ISSN:0016-8033
Container-title:GEOPHYSICS
language:en
Short-container-title:GEOPHYSICS

Author:

Peddie Norman W.¹

Affiliation:

1. U.S. Geological Survey, MS 964, Box 25046, Denver Federal Center, Denver, CO 80225

Abstract

The total magnetic field near the surface of the Earth is a sum of several constituent fields. Part of the total field consists of fields that are transient or rapidly varying. These fields are caused, either directly or indirectly, by electric currents in the upper atmosphere and beyond. The part of the total field that is more permanent arises from sources that are located inside the Earth. Evidence suggests that this part has two principal constituents: the main field and the crustal field.

Publisher

Society of Exploration Geophysicists

Subject

Geochemistry and Petrology,Geophysics

Link

https://library.seg.org/doi/pdf/10.1190/1.1441450

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