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Development of damage curves for buildings near La Rochelle during Storm Xynthia based on insurance claims and hydrodynamic simulations
Natural Hazards and Earth System Sciences ( IF 4.6 ) Pub Date : 2021-06-18 , DOI: 10.5194/nhess-2021-161
Manuel Andres Diaz Loaiza , Jeremy D. Bricker , Remi Meynadier , Trang Duong , Rosh Ranasinghe , Sebastiaan Jonkman

Abstract. The Delft3D hydrodynamic and wave model is used to hindcast the storm surge and waves that impacted La Rochelle, France and the surrounding area (Aytré, Châtelaillon-Plage, Yves, Fouras and Ille du Re) during Storm Xynthia. These models are validated against tide and wave measurements. The models then estimate the footprint of flow depth, speed, unit discharge, flow momentum flux, significant wave height, wave energy flux, total water depth (flow depth plus wave height), and total (flow plus wave) force at the locations of damaged buildings for which insurance claims data are available. Correlation of the hydrodynamic and wave results with the claims data generates building damage functions. These damage functions are shown to be sensitive to the topography data used in the simulation, as well as the hydrodynamic or wave forcing parameter chosen for the correlation. The most robust damage functions result from highly accurate topographic data, and are correlated with water depth or total (flow plus wave) force.

中文翻译:

基于保险索赔和水动力模拟的风暴辛西娅风暴期间拉罗谢尔附近建筑物的损坏曲线开发

摘要。Delft3D 流体动力学和波浪模型用于后报风暴 Xynthia 期间影响法国拉罗谢尔及周边地区(艾特雷、沙泰拉永普拉日、伊夫、富拉斯和雷岛)的风暴潮和波浪。这些模型针对潮汐和波浪测量进行了验证。然后,模型估计水深、速度、单位流量、流动动量通量、有效波高、波浪能通量、总水深(水深加波高)和总(水流加波浪)力的足迹。可获取保险索赔数据的受损建筑物。水动力和波浪结果与索赔数据的相关性生成建筑物损坏函数。这些损伤函数对模拟中使用的地形数据很敏感,以及为相关性选择的水动力或波浪强迫参数。最强大的损伤函数来自高度准确的地形数据,并与水深或总(流加波浪)力相关。
更新日期:2021-06-18
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