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| Titel |
Electric signal emissions during repeated abrupt uniaxial compressional stress steps in amphibolite from KTB drilling |
| VerfasserIn |
D. Triantis, C. Anastasiadis, F. Vallianatos, P. Kyriazis, G. Nover |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 7, no. 1 ; Nr. 7, no. 1 (2007-01-26), S.149-154 |
| Datensatznummer |
250004336
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| Publikation (Nr.) |
 copernicus.org/nhess-7-149-2007.pdf |
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| Zusammenfassung |
| 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. |
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