Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/1397
Authors: | Lyubushin, A. A. | Title: | Analysis of multidimensional geophysical monitoring time series for earthquake prediction | Issue Date: | Oct-1999 | Series/Report no.: | 5/42 (1999) | URI: | http://hdl.handle.net/2122/1397 | Keywords: | collective behaviour spectral matrices canonical coherences |
Subject Classification: | 04. Solid Earth::04.06. Seismology::04.06.10. Instruments and techniques | Abstract: | A method is presented for detection of synchronous signals in multidimensional time series data. It is based on estimation of eigenvalues of spectral matrices and canonical coherences in moving time windows and extraction of an aggregated signal (a scalar signal, which accumulates in its own variations only those spectral components which are present simultaneously in each scalar time series). It is known that an increase in the collective behavior of the components of some systems and an enlarged spatial radius of fluctuations of their parameters could be regarded as an important precursor of an oncoming catastrophe, i.e. abrupt change of the system's parameter values. From that point of view, detection of synchronous signals in various geophysical parameters, measured at points of some network, covering a given area of the Earth's crust, is of interest for identifying precursors of strong earthquakes. Some examples are presented of the use of this technique in the processing of real geophysical time series. |
Appears in Collections: | Annals of Geophysics |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
13 lyubushin.pdf | 3.86 MB | Adobe PDF | View/Open |
Page view(s)
137
checked on Apr 17, 2024
Download(s) 20
347
checked on Apr 17, 2024