publication . Article . Other literature type . 2013

High frequency microseismic noise as possible earthquake precursor

Ivica Sović; Kristina Šariri; Mladen Živčić;
Open Access English
  • Published: 07 Aug 2013 Journal: Research in Geophysics (issn: 2038-9655, eissn: 2038-9663, Copyright policy)
  • Publisher: PAGEPress Publications
Abstract
<jats:p>Before an earthquake occurs, microseismic noise in high frequency (HF) range, &lt;em&gt;i.e.&lt;/em&gt; 2-25 Hz, is being generated during preparation process. These signals change the microseismic noise and, consequently, the spectrum of microseismic noise. Time variation of spectra recorded at the same seismological station could imply the change of the state of noise source. We propose the image moment analysis approach to objectively compare microseismic noise spectra. The result could be used for earthquake precursor identification. Expected spectra change is in HF range, so the analysis has been limited to the shallow tectonic earthquakes with epic...
Subjects
arXiv: Physics::Geophysics
free text keywords: microseismic noise, earthquake precursor, affine moment invariants., Geophysics. Cosmic physics, QC801-809
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