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| Titel |
Microseismic activity analysis for the study of the rupture mechanisms in unstable rock masses |
| VerfasserIn |
D. Amitrano, M. Arattano, M. Chiarle, G. Mortara, C. Occhiena, M. Pirulli, C. Scavia |
| 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 ; 10, no. 4 ; Nr. 10, no. 4 (2010-04-15), S.831-841 |
| Datensatznummer |
250008086
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| Publikation (Nr.) |
 copernicus.org/nhess-10-831-2010.pdf |
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| Zusammenfassung |
Rockfalls are common instabilities in alpine areas and can cause significant
damage. Since high mountains have been affected by an increasing number of
these phenomena in the last years, a possible correlation with permafrost
degradation induced by climate change has been hypothesized.
To investigate this topic, a monitoring system, made of 5 triaxial geophones
and 1 thermometer, was installed in 2007 at the Carrel hut (3829 m a.s.l.,
Matterhorn, North-western Alps), in the frame of the Interreg IIIA Alcotra
project n. 196 "Permadataroc".
The preliminary data processing relates to the classification of recorded
signals, the identification of the significant microseismic events and the
analysis of their distribution in time and space. The first results indicated
a possible correlation between clusters of events and temperature trend, and
a concentration of events in specific sectors of the rock mass.
Research is still in progress. The recording of data for a longer period is
planned to fully understand seasonal trends and spatial distribution of
microseismic activity, and possible relations with permafrost degradation.
Nevertheless, the preliminary observations prove that the monitoring system
can detect noises generated by rock slope deformation. Once fully developed,
this technique could become a helpful tool for early warning and preliminary
stability assessments. |
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