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| Titel |
Acoustic module of the Acquabona (Italy) debris flow monitoring system |
| VerfasserIn |
A. Galgaro, P. R. Tecca, R. Genevois, A. M. Deganutti |
| 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 ; 5, no. 2 ; Nr. 5, no. 2 (2005-02-11), S.211-215 |
| Datensatznummer |
250002332
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| Publikation (Nr.) |
 copernicus.org/nhess-5-211-2005.pdf |
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| Zusammenfassung |
| Monitoring of debris flows aimed to the assessment of their physical
parameters is very important both for theoretical and practical purposes.
Peak discharge and total volume of debris flows are crucial for designing
effective countermeasures in many populated mountain areas where losses of
lives and property damage could be avoided.
This study quantifies the relationship between flow depth, acoustic
amplitude of debris flow induced ground vibrations and front velocity in the
experimental catchment of Acquabona, Eastern Dolomites, Italy. The analysis
of data brought about the results described in the following. Debris flow
depth and amplitude of the flow-induced ground vibrations show a good
positive correlation. Estimation of both mean front velocity and peak
discharge can be simply obtained monitoring the ground vibrations, through
geophones installed close to the flow channel; the total volume of debris
flow can be so directly estimated from the integral of the ground vibrations
using a regression line. The application of acoustic technique to debris
flow monitoring seems to be of the outmost relevance in risk reduction
policies and in the correct management of the territory. Moreover this
estimation is possible in other catchments producing debris flows of similar
characteristics by means of their acoustic characterisation through quick
and simple field tests (Standard Penetration Tests and seismic refraction
surveys). |
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