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Probabilistic landslide hazard and risk mapping on the basis of occurrence and damages in the recent past

机译:近期概率障碍物危害和风险绘制及近期损害的损害

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A procedure for quantitative landslide risk mapping considering both hazard and vulnerability is presented. The approach has been applied in a municipality in the lower Deva valley (Spain). Firstly, a susceptibility model has been elaborated on the basis of the statistical relationships between past landslides and terrain parameters related to instability. From the analysis of landslide frequency (for the last 50 years) and magnitude, the susceptibility model has been transformed into a probabilistic hazard model for a stated period (spatial-temporal probability of new landslides in any point of the study area). On the other hand, a detailed inventory of direct damages due to landslides during the study period has been carried out. Then vulnerability has been assessed by comparing losses with actual values, for specific scenarios. The combination of hazard (probability) and vulnerability (0-1) have provided a quantitative risk map, in which potential losses are expressed in monetary terms (?/pixel/year).
机译:考虑到危险和漏洞的定量滑坡风险映射的过程。该方法已应用于下游谷(西班牙)的自治市。首先,已经在与不稳定性相关的过去山体滑坡和地形参数之间的统计关系的基础上阐述了易感性模型。从分析滑坡频率(过去50年)和幅度,易感模型已被转化为概率危险模型,以便在陈述期间(在研究区域的任何时候新滑坡的空间 - 时间概率)。另一方面,已经进行了在研究期间由于山体滑坡导致的直接损害的详细清单。然后通过比较具有实际值的损失来评估漏洞,用于具体方案。危险(概率)和漏洞(0-1)的组合提供了定量风险图,其中潜在的损失以货币术语(?/像素/年)表示。

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