Geochemical precursors to seismic activity
نویسندگان
چکیده
منابع مشابه
Shallow lithospheric contribution to mantle plumes revealed by integrating seismic and geochemical data
[1] Using an integrated geophysical and geological approach based on a comparative analysis of 27 different parameters, we investigate both the location and origin of the source material for hot spot volcanoes. We report a significant correlation between extreme geochemical compositions of lavas with both shallow seismic velocities and the depth extent to which a hot spot source can be traced w...
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We examined the groundwater Argon content data sampled from 1988 to 2001 at two wells in Kamchatka (Russia) and anomalous increases appeared clearly during June– July 1996. On 21 June, a shallow (1 km) earthquake with M=7.1 occurred at a distance less than 250 km from the wells and so the previous increases could be related to this earthquake and, in particular, could be considered premonitory ...
متن کامل3 Seismic Activity
The Tucunduba Dam is about 290 km West of Fortaleza, Ceará state. The seismic monitoring of the area, with a local network, has began on June 11, 1997, soon after the occurrence of the event with magnitude 3.2 mb on June 09, 1997. The monitoring was done with one the analogical station (used for magnitude duration measurement and statistical control activity) and seven digital stations. The dig...
متن کاملA model for the magmatic–hydrothermal system at Mount Rainier, Washington, from seismic and geochemical observations
Mount Rainier is one of the most seismically active volcanoes in the Cascade Range, with an average of one to two high-frequency volcano-tectonic (or VT) earthquakes occurring directly beneath the summit in a given month. Despite this level of seismicity, little is known about its cause. The VT earthquakes occur at a steady rate in several clusters below the inferred base of the Quaternary volc...
متن کاملForecasting Seismic Signatures of Stellar Magnetic Activity
For the Sun, a tight correlation between various activity measures and oscillation frequencies is well documented. For other stars, we have abundant data on magnetic activity and its changes but not yet on its seismic signature. A prediction of the activity induced frequency changes in stars based on scaling the solar relations is presented. This seismic signature of the activity should be meas...
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ژورنال
عنوان ژورنال: Pure and Applied Geophysics PAGEOPH
سال: 1988
ISSN: 0033-4553,1420-9136
DOI: 10.1007/bf00878998