Management of Combined Natural Risks-application to Earthquake-triggered Landslide Dams
1 Introduction The management of natural hazards and risks has become a challenging and dramatically increas-ing task. Natural risks are defined to have two components: (1) the hazard (the probability of a major natural event) and (2) the vulnerability of human settlements and installations. Without this clear dis-tinction no real risk assessments can be performed. In engineering geology, the simple but effective formula risk=hazard x vulnerability is used. Different from other approaches, which just add hazard and vulnerabi|ity, this approach provides the great advantage that when the factor vulnerability is zero the risk is zero too even at conditions of very high hazards. The most effective countermeasure against natural risks is the use of risk maps. They are able to provide the necessary basic information to the planners and decision makers to reduce the impacts of the natural threats. Numerous types of geologic, geo-environmental, or engineering geologic maps have been developed during the past decades to cover natural risks. Most of these maps concentrate on one single hazard (e. g. Hanneberg et al. 2002).
Jorg Hanisch
JorgeConsult-Worldwide Engineering Geology, Hanover, Germany
国际会议
International Conference on Dam Safety Management(2008水库大坝安全管理国际研讨会)
南京
英文
863-866
2008-10-22（万方平台首次上网日期，不代表论文的发表时间）