alexa Intermittent dynamics of critical pre-seismic electromagnetic fluctuations
Geology & Earth Science

Geology & Earth Science

Journal of Earth Science & Climatic Change

Author(s): Contoyiannis YF, Diakonos FK, Kapiris PG, Peratzakis AS, Eftaxias KA

Abstract Share this page

It has been proposed that large earthquakes (EQ) are similar to critical phenomena. A new method for the research of the critical fluctuations and for the estimation of corresponding critical exponents is applied to the very high frequency (VHF) electromagnetic (EM) time-series recorder prior to the Kozani-Grevena (K-G) earthquake (EQ) in Greece ( Ms=6.6, on May 13, 1995). Such ruptures involve interactions between structures at many different scales. The system investigated might be considered as possessing two phases. The heterogeneous system first develops isolated cracks, which are nucleated in the weak regions (phase I). As the applied strain increases, the cracks join, i.e., long-range correlations are developed between the cracks (phase II). A possible phase transition in the fracture process could be elevated by the behavior of the long-range correlations. A basic question in this treatment concerns the critical window in which the transition from the first to the second phase takes place. We argue that the recently proposed intermittent dynamics of critical fluctuations (IDCF)-model indicates the presence of a precursory Critical Window of Stationarity during which the “short-range” correlations evolve to “long-range”. The corresponding part of the electromagnetic (EM) time-series reveals: (i) A remarkable stationarity, which can be studied in terms of a continuous phase transition at equilibrium. We show that the organization of the precursory EM phenomenon during the phase transition can be described in terms of intermittent dynamics of type I. (ii) A power law behavior in the distribution of suitably defined laminar regions and a power spectral density S( f) that can also be approximated by a power-law spectrum S( f)∼ f- β. The estimated critical exponents classify the reported critical phase transition to the 3D-Ising-universality class.

This article was published in Physics and Chemistry of the Earth and referenced in Journal of Earth Science & Climatic Change

Relevant Expert PPTs

Relevant Speaker PPTs

Recommended Conferences

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri, Food, Aqua and Veterinary Science Journals

Dr. Krish

agrifoodaquavet@omicsonline.com

1-702-714-7001 Extn: 9040

Clinical and Biochemistry Journals

Datta A

clinical_biochem@omicsonline.com

1-702-714-7001Extn: 9037

Business & Management Journals

Ronald

business@omicsonline.com

1-702-714-7001Extn: 9042

Chemical Engineering and Chemistry Journals

Gabriel Shaw

chemicaleng_chemistry@omicsonline.com

1-702-714-7001 Extn: 9040

Earth & Environmental Sciences

Katie Wilson

environmentalsci@omicsonline.com

1-702-714-7001Extn: 9042

Engineering Journals

James Franklin

engineering@omicsonline.com

1-702-714-7001Extn: 9042

General Science and Health care Journals

Andrea Jason

generalsci_healthcare@omicsonline.com

1-702-714-7001Extn: 9043

Genetics and Molecular Biology Journals

Anna Melissa

genetics_molbio@omicsonline.com

1-702-714-7001 Extn: 9006

Immunology & Microbiology Journals

David Gorantl

immuno_microbio@omicsonline.com

1-702-714-7001Extn: 9014

Informatics Journals

Stephanie Skinner

omics@omicsonline.com

1-702-714-7001Extn: 9039

Material Sciences Journals

Rachle Green

materialsci@omicsonline.com

1-702-714-7001Extn: 9039

Mathematics and Physics Journals

Jim Willison

mathematics_physics@omicsonline.com

1-702-714-7001 Extn: 9042

Medical Journals

Nimmi Anna

medical@omicsonline.com

1-702-714-7001 Extn: 9038

Neuroscience & Psychology Journals

Nathan T

neuro_psychology@omicsonline.com

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

John Behannon

pharma@omicsonline.com

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

social_politicalsci@omicsonline.com

1-702-714-7001 Extn: 9042

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version