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| Titel |
Is flow velocity a significant parameter in flood damage modelling? |
| VerfasserIn |
H. Kreibich, K. Piroth, I. Seifert, H. Maiwald, U. Kunert, J. Schwarz, B. Merz, A. H. Thieken |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 9, no. 5 ; Nr. 9, no. 5 (2009-10-14), S.1679-1692 |
| Datensatznummer |
250006988
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| Publikation (Nr.) |
 copernicus.org/nhess-9-1679-2009.pdf |
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| Zusammenfassung |
| Flow velocity is generally presumed to influence flood damage. However, this
influence is hardly quantified and virtually no damage models take it into
account. Therefore, the influences of flow velocity, water depth and
combinations of these two impact parameters on various types of flood damage
were investigated in five communities affected by the Elbe catchment flood in
Germany in 2002. 2-D hydraulic models with high to medium spatial resolutions
were used to calculate the impact parameters at the sites in which damage
occurred. A significant influence of flow velocity on structural damage,
particularly on roads, could be shown in contrast to a minor influence on
monetary losses and business interruption. Forecasts of structural damage to
road infrastructure should be based on flow velocity alone. The energy head
is suggested as a suitable flood impact parameter for reliable forecasting of
structural damage to residential buildings above a critical impact level of
2 m of energy head or water depth. However, general consideration of flow
velocity in flood damage modelling, particularly for estimating monetary
loss, cannot be recommended. |
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