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  4. Hydrodynamic-numerical analysis of hinterland flooding as basis for the assessment of consequences of failure of flood protection systems
 
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Hydrodynamic-numerical analysis of hinterland flooding as basis for the assessment of consequences of failure of flood protection systems

Publikationstyp
Journal Article
Date Issued
2017
Sprache
German
Author(s)
Gruhn, Angelika 
Salecker, Dörte  
Fröhle, Peter  
Institut
Wasserbau B-10  
TORE-URI
http://hdl.handle.net/11420/9763
Journal
Die Küste  
Start Page
143
End Page
181
Citation
Die Kuste 2017 (85): 143-181 (2017)
Scopus ID
2-s2.0-85095455225
Within the joint BMBF/KFKI project HoRisk different investigations have been carried out to assess the inundation propagation in protected coastal areas. On the one hand, a sensitivity analysis has been performed to derive relevant structure and failure related parameters. Furthermore, numerical simulations have been set up to assess the inundation propagation within real project areas along the German Baltic Sea coast. The sensitivity analyses include investigations for derivation of dependencies between structure related, respectively, failure related parameters and parameters necessary for damage and risk assessment. The influence of the breach width, breach location, failure duration, return period of the storm surge, storm surge fullness and the influence of tides on the inundation propagation have been investigated. As a result, the breach width, return period of the storm surge and the storm surge fullness are the decisive parameters. The combination of the storm tide and the subsequent tide are relevant for the determination of the maximum inundation depth in tidal influenced coastal areas. Numerical simulation for the area of Markgrafenheide confirmed the results of the sensitivity analyses. Moreover, the topography of the protected area exerts the most striking influence on the inundation propagation. Additionally, comparative analyses between the phjsical-anafytically approach by Führböter (1987) and the numerical model Mike 21 have been performed.
Subjects
Markgrafenheide
Mike 21
Numerical inundation modelling sensitivity analysis
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