Radon and rock deformation
Article Abstract:
There are many potential examples of pre-earthquake 'strain indicators,' according to research undertaken in the Roselend reservoir in the French Alps. It has been established that a range of phenomena, including changes of electric potential, consistently accompany water-level changes behind the Roselend dam. There appears to be evidence of a relationship between radon and electrical anomalies, and the deformation of crustal rocks.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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Role of pore fluids in the generation of seismic precursors to shear fracture
Article Abstract:
Controlled laboratory deformation experiments intended to identify the seismic events that precede earthquakes found that shear fracture in dry rock is marked by a loss in seismic b-values whereas water-saturated rock yielded an intermediate b-value minimum. Seismic b-values are the log-linear slope of the earthquake frequency-magnitude distribution. The b-values have two minima punctuated by a brief maximum.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1992
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A deficit vanished
Article Abstract:
A new study investigates southern California's earthquake deficit published in the 1995 report 'Seismic Hazards in Southern California: Probable Earthquakes 1994-2024', produced by the Working Group on California Earthquake Probabilities (WGCEP/95). The new report reconciles the discrepancies between observed rates of earthquakes since 1850 and predictions from the preferred WEGCEP/95 seismicity models.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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