Electric signal emissions during repeated abrupt uniaxial compressional stress steps in amphibolite from KTB drilling
| Autor: | G. Nover, P. Kyriazis, Dimos Triantis, Filippos Vallianatos, C. Anastasiadis |
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| Přispěvatelé: | EGU, Publication, Technological Educational Institute of Athens, Technological Educational Institute of Crete, Brunel University London [Uxbridge], Mineralogisches Institut der Universität Bonn |
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere Work (thermodynamics) 010504 meteorology & atmospheric sciences [SDU.OCEAN] Sciences of the Universe [physics]/Ocean Atmosphere Drilling Mineralogy [SDU.STU]Sciences of the Universe [physics]/Earth Sciences 010502 geochemistry & geophysics 01 natural sciences [SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces environment Electric signal Stress (mechanics) [SDU.STU] Sciences of the Universe [physics]/Earth Sciences General Earth and Planetary Sciences Geotechnical engineering Electric current [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Geology 0105 earth and related environmental sciences |
| Zdroj: | Scopus-Elsevier Natural Hazards and Earth System Sciences Natural Hazards and Earth System Sciences, Copernicus Publ. / European Geosciences Union, 2007, 7 (1), pp.149-154 |
| ISSN: | 1684-9981 1561-8633 |
| Popis: | Laboratory experiments have confirmed that the application of uniaxial stress on rock samples is accompanied by the production of weak electric currents, to which the term Pressure Stimulated Currents – PSC has been attributed. In this work the PSC emissions in amphibolite samples from KTB drilling are presented and commented upon. After having applied sequential loading and unloading cycles on the amphibolite samples, it was ascertained that in every new loading cycle after unloading, the emitted PSC exhibits lower peaks. This attitude of the current peaks is consistent with the acoustic emissions phenomena, and in this work is verified for PSC emissions during loading – unloading procedures. Consequently, the evaluation of such signals can help to correlate the state and the remaining strength of the sample with respect to the history of its mechanical stress. |
| Databáze: | OpenAIRE |
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