Linking electromagnetic precursors with earthquake dynamics

dc.contributor.author	Μηναδάκης, Γιώργος	el
dc.contributor.author	Ποτηράκης, Στέλιος Μ.	el
dc.contributor.author	Νομικός, Κωνσταντίνος Δ.	el
dc.contributor.author	Ευταξίας, Κωνσταντίνος Α.	el
dc.date.accessioned	2015-06-09T18:09:10Z
dc.date.available	2015-06-09T18:09:10Z
dc.date.issued	2015-06-09
dc.identifier.uri	http://hdl.handle.net/11400/15611
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.source	http://www.elsevier.com/	en
dc.subject	Earthquake dynamics
dc.subject	Fractal Brownian motion model
dc.subject	Hurst exponent
dc.subject	Nonextensive Tsallis statistics
dc.subject	Preseismic electromagnetic emissions
dc.subject	Self-affinity
dc.subject	Προσεισμικές ηλεκτρομαγνητικές εκπομπές
dc.subject	Δυναμική Σεισμού
dc.subject	Αυτο-συνάφεια
dc.title	Linking electromagnetic precursors with earthquake dynamics	en
heal.type	journalArticle
heal.secondaryTitle	an approach based on nonextensive fragment and self-affine asperity models	en
heal.classification	Technology
heal.classification	Electrical engineering
heal.classification	Τεχνολογία
heal.classification	Ηλεκτρολογία Μηχανολογία
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85133147
heal.classificationURI	http://zbw.eu/stw/descriptor/18426-4
heal.classificationURI	N/A-Τεχνολογία
heal.classificationURI	N/A-Ηλεκτρολογία Μηχανολογία
heal.identifier.secondary	DOI: 10.1016/j.physa.2011.11.049
heal.language	en
heal.access	campus
heal.publicationDate	2012-03-15
heal.bibliographicCitation	MINADAKIS, G., POTIRAKIS, S.M., NOMICOS, C.D. & EFTAXIAS, K.A. (2012). Linking electromagnetic precursors with earthquake dynamics: an approach based on nonextensive fragment and self-affine asperity models. Physica A: Statistical Mechanics and its Applications. [online] 391 (6). p. 2232-2244. Available from: http://www.elsevier.com/[Accessed 26/11/2011]	en
heal.abstract	Understanding the earthquake (EQ) preparation process in terms of precursory electromagnetic (EM) emissions has been an evolving field of multi-disciplinary research. EM emissions in a wide frequency spectrum ranging from kHz to MHz are produced by opening cracks, which can be considered as precursors of general fracture. An important feature, observed on both laboratory and geophysical scale, is that the MHz radiation systematically precedes the kHz one. Yet, the link between an individual EM precursor and a distinctive stage of the EQ preparation comprises a crucial open question. A recently proposed two-stage model on preseismic EM activity suggests that the MHz EM emission is due to the fracture of the highly heterogeneous system that surrounds the fault. The finally emerged kHz EM emission is rooted in the final stage of EQ generation, namely, the fracture of entities sustaining the system. In this work we try to further penetrate and elucidate the link of the precursory kHz EM activity with the last stage of EQ generation building on two theoretical models for EQ dynamics. First, the self-affine model states that an EQ is due to the slipping of two rough and rigid fractional Brownian profiles, one over the other, when there is an intersection between them. Second, the fragmentasperity model, rooted in a nonextensive Tsallis framework starting from first principles, consists of two rough profiles interacting via fragments filling the gap. In the latter approach, the mechanism of triggering EQ is established through the interaction of the irregularities of the fault planes and the fragments between them. This paper shows that these models of EQ dynamics can be linked with the detected kHz EM emission. In this framework of analysis of preseismic EM activity, we identify sufficient criteria that offer the possibility to discriminate whether a seismic shock is sourced in the fracture of fragments filling the gap between the rough profiles or in the fracture of "teeth" distributed across the fractional Brownian profiles that sustain the system.	en
heal.publisher	Elsevier	en
heal.journalName	Physica A: Statistical Mechanics and its Applications	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true