Experiences from site-specific landslide early warning systems
Autor: | Michel Jaboyedoff, Sara Bazin, Lars Harald Blikra, Marc-Henri Derron, Clément Michoud |
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Jazyk: | angličtina |
Rok vydání: | 2013 |
Předmět: |
010504 meteorology & atmospheric sciences
Operations research Computer science 0211 other engineering and technologies 02 engineering and technology 01 natural sciences lcsh:TD1-1066 Robustness (computer science) Redundancy (engineering) lcsh:Environmental technology. Sanitary engineering Set (psychology) Implementation lcsh:Environmental sciences 0105 earth and related environmental sciences lcsh:GE1-350 021110 strategic defence & security studies Warning system lcsh:QE1-996.5 lcsh:Geography. Anthropology. Recreation Landslide lcsh:Geology Risk analysis (engineering) Work (electrical) lcsh:G Key (cryptography) General Earth and Planetary Sciences |
Zdroj: | Natural Hazards and Earth System Sciences, Vol 13, Iss 10, Pp 2659-2673 (2013) |
ISSN: | 1684-9981 1561-8633 |
Popis: | 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. |
Databáze: | OpenAIRE |
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