Radon emanation on the San Andreas Fault

Earthquake Information Bulletin (USGS)


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Radon is a radioactive gas with a half-life of 3.8 days. (Half-life is the time required for the substance to lose half of its radioactivity by decay.) It is itself produced by the decay of uranium. Radon is constantly emanated from the Earth into the atmosphere. Many cases are known where anomalously large amounts of radon have been given off along active faults. THe radon emanation has shown variations with time that are related to changing atmospheric conidtions and possibly to nearby seismic activity. 

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Radon emanation on the San Andreas Fault
Series title Earthquake Information Bulletin (USGS)
Volume 10
Issue 4
Year Published 1978
Language English
Publisher U.S Geological Survey
Description 3 p.
First page 136
Last page 138
Country United States
State California
Online Only (Y/N) N
Additional Online Files (Y/N) N