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Journal Article

Ein neues Modell für die Berechnung von Hochwassergefährdungskarten

Authors
/persons/resource/vorogus

Vorogushyn,  Sergiy
Vol. 1, Issue 1 (2011), GFZ Journal 2011, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
5.4 Hydrology, 5.0 Earth Surface Processes, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

/persons/resource/hapel

Apel,  Heiko
Vol. 1, Issue 1 (2011), GFZ Journal 2011, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
5.4 Hydrology, 5.0 Earth Surface Processes, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Lindenschmidt,  Karl-Erich
Vol. 1, Issue 1 (2011), GFZ Journal 2011, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
External Organizations;

/persons/resource/bmerz

Merz,  Bruno
Vol. 1, Issue 1 (2011), GFZ Journal 2011, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
5.4 Hydrology, 5.0 Earth Surface Processes, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

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Fulltext (public)

GFZ_syserde.01.01.7.pdf
(Publisher version), 378KB

Supplementary Material (public)
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Citation

Vorogushyn, S., Apel, H., Lindenschmidt, K.-E., Merz, B. (2011): Ein neues Modell für die Berechnung von Hochwassergefährdungskarten. - System Erde, 1, 1, 42-47.
https://doi.org/10.2312/GFZ.syserde.01.01.7


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_23088
Abstract
Hazard and risk assessments for river reaches protected by dikes have not adequately considered the inundation processes up to now. Particularly, the processes of dike failures and their influence on the hinterland inundation and flood wave propagation lack comprehensive consideration. This study focuses on the development and application of a new modelling system which allows a comprehensive flood hazard assessment along diked river reaches considering dike failures. The Inundation Hazard Assessment Model (IHAM) developed at the GFZ German Research Centre for Geosciences comprises three models interactively coupled at runtime. These are: (1) 1D unsteady hydrodynamic model for river channel and floodplain between dikes, (2) probabilistic dike breach model, which assesses dike breach probabilities, breach widths and flow rates through the breach, and (3) 2D raster-based diffusion wave storage cell model of the hinterland areas behind the dikes. IHAM generates probabilistic flood hazard maps that show spatial characteristics of inundation depths, flow velocities and other flood intensity indicators. These maps explicitly indicate uncertainties of these characteristics. Furthermore, IHAM enables the identification of endangered dike sections and computation of their failure probabilities. The knowledge gained with IHAM can significantly contribute to the planning of flood protection measures and risk analyses.