 |
| Titel |
Pressure stimulated currents in rocks and their correlation with mechanical properties |
| VerfasserIn |
I. Stavrakas, D. Triantis, Z. Agioutantis, S. Maurigiannakis, V. Saltas, F. Vallianatos, M. Clarke |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1561-8633
|
| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 4, no. 4 ; Nr. 4, no. 4 (2004-10-08), S.563-567 |
| Datensatznummer |
250001821
|
| Publikation (Nr.) |
 copernicus.org/nhess-4-563-2004.pdf |
|
|
|
|
|
| Zusammenfassung |
| The spontaneous electrification of marble samples was studied while they
were subjected to uniaxial stress. The Pressure Stimulated Current (PSC)
technique was applied to measure the charge released from compressed
Dionysos marble samples, while they were subjected to cyclic loading. The
experimental results demonstrate that, in the linear elastic region of the
sample, no PSC is recorded, while beyond the stress limit (s>0.60),
observable variations appear, which increase considerably in the vicinity of
sample failure, reaching a maximum value just before the failure. The
emitted current is reduced on each loading cycle and it has a reciprocal
dependence to the normalized Young modulus. The MCD model, applied out of
the vicinity of sample failure explains successfully the above findings. The
existence of a "memory-like" behavior of the sample, could justify the
weakness or absence of electrical earthquake precursors, during an
aftershock sequence. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|