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| Titel |
Flood-risk mapping: contributions towards an enhanced assessment of extreme events and associated risks |
| VerfasserIn |
B. Büchele, H. Kreibich, A. Kron, A. Thieken, J. Ihringer, P. Oberle, B. Merz, F. Nestmann |
| 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 ; 6, no. 4 ; Nr. 6, no. 4 (2006-06-12), S.485-503 |
| Datensatznummer |
250003602
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| Publikation (Nr.) |
 copernicus.org/nhess-6-485-2006.pdf |
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| Zusammenfassung |
| Currently, a shift from classical flood protection as engineering task
towards integrated flood risk management concepts can be observed. In this
context, a more consequent consideration of extreme events which exceed the
design event of flood protection structures and failure scenarios such as
dike breaches have to be investigated. Therefore, this study aims to enhance
existing methods for hazard and risk assessment for extreme events and is
divided into three parts. In the first part, a regionalization approach for
flood peak discharges was further developed and substantiated, especially
regarding recurrence intervals of 200 to 10 000 years and a large number of
small ungauged catchments. Model comparisons show that more confidence in
such flood estimates for ungauged areas and very long recurrence intervals
may be given as implied by statistical analysis alone. The hydraulic
simulation in the second part is oriented towards hazard mapping and risk
analyses covering the whole spectrum of relevant flood events. As the
hydrodynamic simulation is directly coupled with a GIS, the results can be
easily processed as local inundation depths for spatial risk analyses. For
this, a new GIS-based software tool was developed, being presented in the
third part, which enables estimations of the direct flood damage to single
buildings or areas based on different established stage-damage functions.
Furthermore, a new multifactorial approach for damage estimation is
presented, aiming at the improvement of damage estimation on local scale by
considering factors like building quality, contamination and precautionary
measures. The methods and results from this study form the base for
comprehensive risk analyses and flood management strategies. |
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