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Helium soil-gas variations associated with recent central California earthquakes: precursor or coincidence?

Geophysical Research Letters

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Abstract

Decreases in the helium concentration of soil-gas have been observed to precede six of eight recent central California earthquakes. Ten monitoring stations were established near Hollister, California and along the San Andreas Fault to permit gas collection. The data showed decreases occurring a few weeks before the earthquakes and concentratiosn returned to prequake levels either shortly before or after the earthquakes.-Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Helium soil-gas variations associated with recent central California earthquakes: precursor or coincidence?
Series title:
Geophysical Research Letters
Volume
8
Issue:
5
Year Published:
1981
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
433
Last page:
435
Number of Pages:
3