The late 1960's secular variation impulse: Further constraints on deep mantle conductivity

Details The late 1960's secular variation impulse: Further constraints on deep mantle conductivity The late 1960's secular variation impulse: Further constraints on deep mantle conductivity

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pepi...23...72a&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 23, Issue 1, p. 72-75.

Physics

18

Scientific paper

Analysis of geomagnetic secular variation data from world observatories demonstrates the occurrence of a secular variation impulse in the late 1960's. When a simple mantle conductivity model is used in conjunction with the impulse data, it can be shown that the average conductivity of the lower mantle does not exceed 150 ω-1 m-1. This is orders of magnitude smaller than recently published values.

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