Field measurement of natural electromagnetic emissions near the active tectonic and mass-movement fractures in caves

0479242 - ÚSMH 2018 RIV CH eng C - Conference Paper (international conference)
Trčka, T. - Macků, R. - Koktavý, P. - Škarvada, P. - Baroň, I. - Stemberk, Josef
Field measurement of natural electromagnetic emissions near the active tectonic and mass-movement fractures in caves.
Solid State Phenomena. Vol. 258. Zürich: Trans Tech Publications Ltd, 2017 - (Šandera, P.), s. 460-464. Scientific.Net. ISBN 978-30-383-5626-4. ISSN 1012-0394. E-ISSN 1662-9779.
[International Conference on Materials Structure and Micromechanics of Fracture, MSMF8 (8.). Brno (CZ), 27.07.2016-29.07.2016]
R&D Projects: GA MŠMT(CZ) LM2015079
Institutional support: RVO:67985891
Keywords : Active tectonic fault * Continual monitoring * Emission data logger * Field measurement * Fracture processes * Natural electromagnetic emissions
OECD category: Geology

Laboratory tests on a wide range of solid materials shoved that the electromagnetic emission (EME) signals are generated during the samples mechanical stress. EME anomalies have been observed also under natural conditions in association to fracture processes, tectonic loading, stress redistribution and crack propagation prior to earthquake or in relation to deep-seated gravitational mass movements. This paper describes a first prototype of the Emission data logger, which was specially developed for the continual EME monitoring in field conditions. Our equipment has been installed and tested in Obir Caves (Austria) at an active tectonic fault. The pilot long-term EME measurement results from this location are also presented in this paper.
Permanent Link: http://hdl.handle.net/11104/0275242