Preprints
https://doi.org/10.5194/nhess-2021-161
https://doi.org/10.5194/nhess-2021-161

  18 Jun 2021

18 Jun 2021

Review status: a revised version of this preprint is currently under review for the journal NHESS.

Development of damage curves for buildings near La Rochelle during Storm Xynthia based on insurance claims and hydrodynamic simulations

Manuel Andres Diaz Loaiza1, Jeremy D. Bricker1,4, Remi Meynadier2, Trang Duong3, Rosh Ranasinghe3, and Sebastiaan Jonkman1 Manuel Andres Diaz Loaiza et al.
  • 1Department of Hydraulic Engineering, Delft University of Technology, Delft, The Netherlands
  • 2AXA Insurance, Group Risk Management, Paris, France
  • 3IHE Delft, Institute for Water Education, Department of Water Science and Engineering, Delft, The Netherlands
  • 4Department of Civil & Environmental Engineering, University of Michigan, Ann Arbor, MI, USA

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.

Manuel Andres Diaz Loaiza et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CC1: 'Comment on nhess-2021-161', Xavier Bertin, 30 Jun 2021
    • AC1: 'Reply on CC1', Manuel Andrés Díaz Loaiza, 08 Jul 2021
  • RC1: 'Comment on nhess-2021-161', Anonymous Referee #1, 15 Jul 2021
    • AC2: 'Reply on RC1', Manuel Andrés Díaz Loaiza, 19 Sep 2021
  • RC2: 'Comment on nhess-2021-161', Bret Webb, 17 Aug 2021
    • AC3: 'Reply on RC2', Manuel Andrés Díaz Loaiza, 19 Sep 2021

Manuel Andres Diaz Loaiza et al.

Manuel Andres Diaz Loaiza et al.

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Short summary
Extra tropical cyclones are one of the major causes of coastal floods in europe and the world. Understanding the development process and the flooding of storm Xynthia, both together with the damages ocured during the storm, can help to forecast future losses due to other similar storms.
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