Stress induced polarization currents and electromagnetic emission from rocks and ionic crystals, accompanying their deformation

dc.contributor.author	Χατζηκώντης, Βασίλειος	el
dc.contributor.author	Μαυρομάτου, Κλαίρη	el
dc.contributor.author	Νίνος, Δημήτριος Κ.	el
dc.date.accessioned	2015-06-07T17:32:45Z
dc.date.available	2015-06-07T17:32:45Z
dc.date.issued	2015-06-07
dc.identifier.uri	http://hdl.handle.net/11400/15507
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	https://www.egu.eu/	en
dc.subject	electromagnetic radiation
dc.subject	Induced polarization
dc.subject	natural hazard
dc.subject	ηλεκτρομαγνητική ακτινοβολία
dc.subject	επαγόμενη πόλωση
dc.subject	φυσικοί κίνδυνοι
dc.title	Stress induced polarization currents and electromagnetic emission from rocks and ionic crystals, accompanying their deformation	en
heal.type	journalArticle
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.keywordURI	http://id.loc.gov/authorities/subjects/sh85065800
heal.language	en
heal.access	campus
heal.publicationDate	2004
heal.bibliographicCitation	HADJICONTIS, V., MAYROMATOU, C. & NINOS, D.K. (2004). Stress induced polarization currents and electromagnetic emission from rocks and ionic crystals, accompanying their deformation. Natural Hazards and Earth System Science. [online] 4 (5-6). p. 633-639. Available from: https://www.egu.eu/	en
heal.abstract	A crucial question of the scientific community nowadays, concerns the existence of electric signals preceding earthquakes. In order to give a plausible answer to this question, we carried out two kinds of laboratory experiments of uniaxial deformation of ionic crystals and rock samples: a) In the first kind, stress induced polarization currents are detected and recorded. Our experimental results showed not only the existence of stress induced polarization currents before the fracture of the samples, but the possibility of the propagation of these signals, as well, through conductive channels, for distances much longer than the source dimensions. b) In the second, acoustic and electromagnetic signals are detected and recorded in the frequency range from 1 KHz to some MHz. The mechanism of generation of these signals is shown to be different for those emitted from piezoelectric and from non-piezoelectric materials. A plausible model is also suggested, on the compatibility of our laboratory results with the processes occuring in the earth during the earthquake preparatory stage.	en
heal.publisher	European Geosciences Union	en
heal.journalName	Natural Hazards and Earth System Science	en
heal.journalType	peer-reviewed
heal.fullTextAvailability	true