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首页> 外文期刊>Natural hazards and earth system sciences >Damage assessment in Braunsbach 2016: data collection and analysis for an improved understanding of damaging processes during flash floods
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Damage assessment in Braunsbach 2016: data collection and analysis for an improved understanding of damaging processes during flash floods

机译：2016年Braunsbach的损伤评估：数据收集和分析，了解闪蒸期间对破坏过程的理解

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Flash floods are caused by intense rainfall events and represent an insufficiently understood phenomenon in Germany. As a result of higher precipitation intensities, flash floods might occur more frequently in future. In combination with changing land use patterns and urbanisation, damage mitigation, insurance and risk management in flash-flood-prone regions are becoming increasingly important. However, a better understanding of damage caused by flash floods requires ex post collection of relevant but yet sparsely available information for research. At the end of May 2016, very high and concentrated rainfall intensities led to severe flash floods in several southern German municipalities. The small town of Braunsbach stood as a prime example of the devastating potential of such events. Eight to ten days after the flash flood event, damage assessment and data collection were conducted in Braunsbach by investigating all affected buildings and their surroundings. To record and store the data on site, the open-source software bundle KoBoCollect was used as an efficient and easy way to gather information. Since the damage driving factors of flash floods are expected to differ from those of riverine flooding, a post-hoc data analysis was performed, aiming to identify the influence of flood processes and building attributes on damage grades, which reflect the extent of structural damage. Data analyses include the application of random forest, a random general linear model and multinomial logistic regression as well as the construction of a local impact map to reveal influences on the damage grades. Further, a Spearman's Rho correlation matrix was calculated. The results reveal that the damage driving factors of flash floods differ from those of riverine floods to a certain extent. The exposition of a building in flow direction shows an especially strong correlation with the damage grade and has a high predictive power within the constructed damage models. Additionally, the
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    Laudan Jonas; Roezer Viktor; Sieg Tobias; Vogel Kristin; Thieken Annegret H.;

  • 作者单位

    Univ Potsdam Inst Earth &

    Environm Sci Karl Liebknecht Str 24-25 D-14476 Potsdam Germany;

    GFZ German Res Ctr Geosci Dept Hydrol D-14473 Potsdam Germany;

    Univ Potsdam Inst Earth &

    Environm Sci Karl Liebknecht Str 24-25 D-14476 Potsdam Germany;

    Univ Potsdam Inst Earth &

    Environm Sci Karl Liebknecht Str 24-25 D-14476 Potsdam Germany;

    Univ Potsdam Inst Earth &

    Environm Sci Karl Liebknecht Str 24-25 D-14476 Potsdam Germany;

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  • 正文语种 eng
  • 中图分类 地球物理学;
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