Radon anomaly: a possible precursor of the 1978 Izu-Oshima-kinkai earthquake

Journal Article · Thu Feb 21 23:00:00 EST 1980 · Science; (United States)

DOI:https://doi.org/10.1126/science.207.4433.882· OSTI ID:5406325

Wakita, H ^[1]; Nakamura, Y; Notsu, K; Noguchi, M; Asada, T

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1. Univ. of Tokyo, Japan

Precursory changes in the radon concentration of groundwater were observed prior to the Iau-Oshima-kinkai earthquake (magnitude 7.0) 14 January 1978. The distance from the epicenter to a continuous radon-monitoring station at Nakaizu was about 25 kilometers. A sudden drop and a subsequent increase in the radon concentration recorded on 9 January 1978 were significant. The size of the spike-like change was about 15%. After the earthquake, a remarkable increase in the radon concentration occurred.

• OSTI ID: 5406325
• Journal Information: Science; (United States), Journal Name: Science; (United States) Vol. 207; ISSN SCIEA
• Country of Publication: United States
• Language: English

Related Subjects

520301 -- Environment
Aquatic-- Radioactive Materials Monitoring & Transport-- Water-- (1987)
54 ENVIRONMENTAL SCIENCES
58 GEOSCIENCES
580201* -- Geophysics-- Seismology & Tectonics-- (1980-1989)
ASIA
EARTHQUAKES
ELEMENTS
FORECASTING
GROUND WATER
HYDROGEN COMPOUNDS
JAPAN
MONITORING
NONMETALS
OXYGEN COMPOUNDS
PRECURSOR
RADIATION MONITORING
RADON
RARE GASES
SEISMIC EVENTS
WATER