19 research outputs found
Cross-Correlation Earthquake Precursors in the Hydrogeochemical and Geoacoustic Signals for the Kamchatka Peninsula
We propose a new type of earthquake precursor based on the analysis of
correlation dynamics between geophysical signals of different nature. The
precursor is found using a two-parameter cross-correlation function introduced
within the framework of flicker-noise spectroscopy, a general statistical
physics approach to the analysis of time series. We consider an example of
cross-correlation analysis for water salinity time series, an integral
characteristic of the chemical composition of groundwater, and geoacoustic
emissions recorded at the G-1 borehole on the Kamchatka peninsula in the time
frame from 2001 to 2003, which is characterized by a sequence of three groups
of significant seismic events. We found that cross-correlation precursors took
place 27, 31, and 35 days ahead of the strongest earthquakes for each group of
seismic events, respectively. At the same time, precursory anomalies in the
signals themselves were observed only in the geoacoustic emissions for one
group of earthquakes.Comment: 21 pages, 5 figures, 1 table; to be published in "Acta Geophysica".
arXiv admin note: substantial text overlap with arXiv:1101.147
Impact of dangling bonds on the surface of silicon nanocrystals doped with shallow donors upon radiative interband transitions
Use of slag neutralizers during degassing of steel
Translated from Russian (Stal' 1985 (7) p. 24-25)Available from British Library Document Supply Centre- DSC:5828.4(M--36567)T / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo