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SYNCHRONIZATION OF MICRO-SEISMIC NOISE AND ITS STATISTICAL PARAMETERS BEFORE RIDGECREST EARTHQUAKE M7.1 ON 6-TH OF JULY 2019

Emil Oynakov, Dimcho Solakov, Irena Aleksandrova, Maria Chamati

First published: 2020-09-20https://doi.org/10.5593/sgem2020/1.2/s05.081View metrics

Abstract

We analyze the micro-seismic noise recorded at five seismic stations ? DEC, DJJ, FMP, MWC and RPV. They operate within CI: Southern California Seismic Network (SCSN), USA. The data set is collected from 01 July 2018 till 31 July 2019 and all seismic events with a magnitude Mw?4 are excluded. Our main goal is to find the effects of seismic noise synchronization between different seismic stations using data relevant to the vertical seismic components. The width of the multifractal spectrum, the spectral exponent and Hurst exponent are determined, analyzed and discussed. About 150 days before Ridgecrest earthquake M7.1, the onset of low-frequency synchronization between all analyzed seismic stations is observed, rising to high frequencies as the earthquake approaches. Also a stable level of increasing coherence is observed which begins 70 days before the earthquake happened and remains at a relatively high level until the earthquake. There is an unusual and extremely increasing of Hurst and the spectral exponents 50 days before the earthquake. Our study is an independent confirmation of scientific results obtained by other authors.

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Title
SYNCHRONIZATION OF MICRO-SEISMIC NOISE AND ITS STATISTICAL PARAMETERS BEFORE RIDGECREST EARTHQUAKE M7.1 ON 6-TH OF JULY 2019
Authors
Emil Oynakov, Dimcho Solakov, Irena Aleksandrova, Maria Chamati
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Science and Technologies in Geology, Exploration And Mining
Publisher
STEF92 Technology
Year
2020
Pages
639-646
SWS Citekey
Oynakov20205639646
ISSN
1314-2704
ISBN
978-619-7603-05-7
Language
en
Publication type
Conference Paper
Keywords
earthquakemultifractal spectrumcoherenceseismic network
References3

  1. Name1 N.A., Name2 S. T., Complete Title of the paper, Book/Scientific Journal/Name of the Conference, Country, 1999, pp 45-51;

  2. Name1 N.A., Name2 S. T., Complete Title of the paper, International Scientific Event, Country, vol. 3, pp 185-193, 2000.

  3. Name1 N.A., Name2 S. T., Complete Title of the paper, Book/Scientific Journal, Country, vol. 1/issue 6, pp 9-10, 2005.

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