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| Titel |
Experiences from site-specific landslide early warning systems |
| VerfasserIn |
C. Michoud, S. Bazin, L. H. Blikra, M.-H. Derron, M. Jaboyedoff |
| 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 ; 13, no. 10 ; Nr. 13, no. 10 (2013-10-22), S.2659-2673 |
| Datensatznummer |
250085541
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| Publikation (Nr.) |
 copernicus.org/nhess-13-2659-2013.pdf |
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| Zusammenfassung |
| Landslide early warning systems (EWSs) have to be implemented in areas with
large risk for populations or infrastructures when classical structural
remediation measures cannot be set up. This paper aims to gather experiences
of existing landslide EWSs, with a special focus on practical requirements
(e.g., alarm threshold values have to take into account the smallest detectable
signal levels of deployed sensors before being established) and specific
issues when dealing with system implementations. Within the framework of the
SafeLand European project, a questionnaire was sent to about one-hundred
institutions in charge of landslide management. Finally, we interpreted
answers from experts belonging to 14 operational units related to 23
monitored landslides. Although no standard requirements exist for designing
and operating EWSs, this review highlights some key elements, such as the
importance of pre-investigation work, the redundancy and robustness of
monitoring systems, the establishment of different scenarios adapted to
gradual increasing of alert levels, and the necessity of confidence and
trust between local populations and scientists. Moreover, it also confirms
the need to improve our capabilities for failure forecasting, monitoring
techniques and integration of water processes into landslide conceptual
models. |
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