A geomagnetic precursor to the 1979 Carlisle earthquake

Beamish, David. 1982 A geomagnetic precursor to the 1979 Carlisle earthquake. Geophysical Journal of the Royal Astronmical Society, 68. 531-543. https://doi.org/10.1111/j.1365-246X.1982.tb04913.x

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Official URL: http://gji.oxfordjournals.org/content/68/2/531

Abstract/Summary

A study of horizontal field transfer functions, in the period range 10-104 s, has been made for the 2 year period preceding the 1979 Carlisle earthquake (magnitude 5). The study using two sites, local to and remote from the earthquake epicentre, reveals that a precursory effect is observed at short periods (< 102 s) some 35 km from the main epicentre. The results indicate a change from two-dimensional geolectric anisotropy to a more conductive three-dimensional geoelectric configuration during the period immediately preceding the earthquake.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1111/j.1365-246X.1982.tb04913.x
Programmes:	BGS Programmes > Seismology and Geomagnetism
NORA Subject Terms:	Earth Sciences
Date made live:	18 Sep 2015 11:27 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/511793

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.1111/j.1365-246X.1982.tb04913.x

Programmes:

BGS Programmes > Seismology and Geomagnetism

NORA Subject Terms:

Earth Sciences

Date made live:

18 Sep 2015 11:27 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/511793