Analysis of microseismic signals and temperature recordings for rock slope stability investigations in high mountain areas
The permafrost degradation is a probable cause for the increase of rock instabilities and rock falls observed in recent years in high mountain areas, particularly in the Alpine region. The phenomenon causes the thaw of the ice filling rock discontinuities; the water deriving from it subsequently fre...
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Fausto Guzzetti
2012
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Online Access: | http://hdl.handle.net/11583/2498291 https://doi.org/10.5194/nhess-12-2283-2012 |
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ftpoltorinoiris:oai:iris.polito.it:11583/2498291 2024-02-11T10:04:42+01:00 Analysis of microseismic signals and temperature recordings for rock slope stability investigations in high mountain areas OCCHIENA, CRISTINA COVIELLO, VELIO PIRULLI, MARINA SCAVIA, Claudio Arattano M. Chiarle M. Morra di Cella U. Pogliotti P. Occhiena, Cristina Coviello, Velio Arattano, M. Chiarle, M. Morra di Cella, U. Pirulli, Marina Pogliotti, P. Scavia, Claudio 2012 http://hdl.handle.net/11583/2498291 https://doi.org/10.5194/nhess-12-2283-2012 eng eng Fausto Guzzetti info:eu-repo/semantics/altIdentifier/wos/WOS:000306974200015 volume:12 firstpage:2283 lastpage:2298 numberofpages:16 journal:NATURAL HAZARDS AND EARTH SYSTEM SCIENCES http://hdl.handle.net/11583/2498291 doi:10.5194/nhess-12-2283-2012 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84855542829 info:eu-repo/semantics/article 2012 ftpoltorinoiris https://doi.org/10.5194/nhess-12-2283-2012 2024-01-16T23:09:38Z The permafrost degradation is a probable cause for the increase of rock instabilities and rock falls observed in recent years in high mountain areas, particularly in the Alpine region. The phenomenon causes the thaw of the ice filling rock discontinuities; the water deriving from it subsequently freezes again inducing stresses in the rock mass that may lead, in the long term, to rock falls. To investigate these processes, a monitoring system composed by geophones and thermometers was installed in 2007 at the Carrel hut (3829m a.s.l., Matterhorn, NW Alps). In 2010, in the framework of the Interreg 2007–2013 Alcotra project no. 56 MASSA, the monitoring system has been empowered and renovated in order to meet project needs. In this paper, the data recorded by this renewed system between 6 October 2010 and 5 October 2011 are presented and 329 selected microseismic events are analysed. The data processing has concerned the classification of the recorded signals, the analysis of their distribution in time and the identification of the most important trace characteristics in time and frequency domain. The interpretation of the results has evidenced a possible correlation between the temperature trend and the event occurrence. The research is still in progress and the data recording and interpretation are planned for a longer period to better investigate the spatial-temporal distribution of microseismic activity in the rock mass, with specific attention to the relation of microseismic activity with temperatures. The overall goal is to verify the possibility to set up an effective monitoring system for investigating the stability of a rock mass under permafrost conditions, in order to supply the researchers with useful data to better understand the relationship between temperature and rock mass stability and, possibly, the technicians with a valid tool for decision-making. Article in Journal/Newspaper Ice permafrost PORTO@iris (Publications Open Repository TOrino - Politecnico di Torino) Natural Hazards and Earth System Sciences 12 7 2283 2298 |
institution |
Open Polar |
collection |
PORTO@iris (Publications Open Repository TOrino - Politecnico di Torino) |
op_collection_id |
ftpoltorinoiris |
language |
English |
description |
The permafrost degradation is a probable cause for the increase of rock instabilities and rock falls observed in recent years in high mountain areas, particularly in the Alpine region. The phenomenon causes the thaw of the ice filling rock discontinuities; the water deriving from it subsequently freezes again inducing stresses in the rock mass that may lead, in the long term, to rock falls. To investigate these processes, a monitoring system composed by geophones and thermometers was installed in 2007 at the Carrel hut (3829m a.s.l., Matterhorn, NW Alps). In 2010, in the framework of the Interreg 2007–2013 Alcotra project no. 56 MASSA, the monitoring system has been empowered and renovated in order to meet project needs. In this paper, the data recorded by this renewed system between 6 October 2010 and 5 October 2011 are presented and 329 selected microseismic events are analysed. The data processing has concerned the classification of the recorded signals, the analysis of their distribution in time and the identification of the most important trace characteristics in time and frequency domain. The interpretation of the results has evidenced a possible correlation between the temperature trend and the event occurrence. The research is still in progress and the data recording and interpretation are planned for a longer period to better investigate the spatial-temporal distribution of microseismic activity in the rock mass, with specific attention to the relation of microseismic activity with temperatures. The overall goal is to verify the possibility to set up an effective monitoring system for investigating the stability of a rock mass under permafrost conditions, in order to supply the researchers with useful data to better understand the relationship between temperature and rock mass stability and, possibly, the technicians with a valid tool for decision-making. |
author2 |
Occhiena, Cristina Coviello, Velio Arattano, M. Chiarle, M. Morra di Cella, U. Pirulli, Marina Pogliotti, P. Scavia, Claudio |
format |
Article in Journal/Newspaper |
author |
OCCHIENA, CRISTINA COVIELLO, VELIO PIRULLI, MARINA SCAVIA, Claudio Arattano M. Chiarle M. Morra di Cella U. Pogliotti P. |
spellingShingle |
OCCHIENA, CRISTINA COVIELLO, VELIO PIRULLI, MARINA SCAVIA, Claudio Arattano M. Chiarle M. Morra di Cella U. Pogliotti P. Analysis of microseismic signals and temperature recordings for rock slope stability investigations in high mountain areas |
author_facet |
OCCHIENA, CRISTINA COVIELLO, VELIO PIRULLI, MARINA SCAVIA, Claudio Arattano M. Chiarle M. Morra di Cella U. Pogliotti P. |
author_sort |
OCCHIENA, CRISTINA |
title |
Analysis of microseismic signals and temperature recordings for rock slope stability investigations in high mountain areas |
title_short |
Analysis of microseismic signals and temperature recordings for rock slope stability investigations in high mountain areas |
title_full |
Analysis of microseismic signals and temperature recordings for rock slope stability investigations in high mountain areas |
title_fullStr |
Analysis of microseismic signals and temperature recordings for rock slope stability investigations in high mountain areas |
title_full_unstemmed |
Analysis of microseismic signals and temperature recordings for rock slope stability investigations in high mountain areas |
title_sort |
analysis of microseismic signals and temperature recordings for rock slope stability investigations in high mountain areas |
publisher |
Fausto Guzzetti |
publishDate |
2012 |
url |
http://hdl.handle.net/11583/2498291 https://doi.org/10.5194/nhess-12-2283-2012 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000306974200015 volume:12 firstpage:2283 lastpage:2298 numberofpages:16 journal:NATURAL HAZARDS AND EARTH SYSTEM SCIENCES http://hdl.handle.net/11583/2498291 doi:10.5194/nhess-12-2283-2012 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84855542829 |
op_doi |
https://doi.org/10.5194/nhess-12-2283-2012 |
container_title |
Natural Hazards and Earth System Sciences |
container_volume |
12 |
container_issue |
7 |
container_start_page |
2283 |
op_container_end_page |
2298 |
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1790601413291671552 |