Details
| Originalsprache | Englisch |
|---|---|
| Titel des Sammelwerks | Proceedings of the 34th International Conference on Coastal Engineering, ICCE 2014 |
| Herausgeber/-innen | Patrick Lynett |
| Herausgeber (Verlag) | American Society of Civil Engineers (ASCE) |
| ISBN (elektronisch) | 9780989661126 |
| Publikationsstatus | Veröffentlicht - 2014 |
| Veranstaltung | 34th International Conference on Coastal Engineering, ICCE 2014 - Seoul, Südkorea Dauer: 15 Juni 2014 → 20 Juni 2014 |
Publikationsreihe
| Name | Proceedings of the Coastal Engineering Conference |
|---|---|
| Band | 2014-January |
| ISSN (Print) | 0161-3782 |
Abstract
The hydrodynamics of estuaries are forced by the tides from the open sea and the river runoff from the catchment area. The hinterland is often low-lying and densely populated and must therefore be protected by dikes. Anthropogenic climate change poses new challenges to the coastal protection. However, changes in the geometry of the estuaries can have equally severe impacts on the deformation of a storm surge wave form when it propagates through the estuary. This affects the peak water levels and hence the design water levels. This contribution focuses on the influence of retention areas or forelands seaside of the main dike lines, which are protected by summer dikes against the less severe but more frequently occurring storm surges. This is shown at the example of a retention area in the Weser estuary, which has historically been the cite of a soccer stadium and thus hosts high values which stand in sharp contrast against the low safety level against flooding. The investigation is conducted with a 3D hydrodynamic numerical model which has previously been validated for the simulation of storm surges. The results show that even very small changes in the geometry of the estuary can have effects on design levels. This is even the case when they only regard the summer dike crests heights around retention areas and not their volume. Another important finding is that the geometry changes may have their maximum impacts quite far away from the specific river reach in which they are carried out. The results underline that for designing safe and reliable storm surge infrastructure, storm events should be studied in high resolution models which are able to resolve even small scale features such as summer dike lines.
Schlagwörter
- Design water levels, Retention areas, Storm surges, Weser estuary, Catchments, Climate change, Coastal engineering, Floods, Fluid dynamics, Geometry, Hydraulic structures, Hydrodynamics, Levees, Shore protection, Storms, Water levels, Anthropogenic climate changes, Coastal protection, Design water level, High-resolution models, Low safety levels, Small-scale features, Estuaries
ASJC Scopus Sachgebiete
- Ingenieurwesen (insg.)
- Meerestechnik
- Erdkunde und Planetologie (insg.)
- Ozeanographie
- Ingenieurwesen (insg.)
- Tief- und Ingenieurbau
Ziele für nachhaltige Entwicklung
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- BibTex
- RIS
Proceedings of the 34th International Conference on Coastal Engineering, ICCE 2014. Hrsg. / Patrick Lynett. American Society of Civil Engineers (ASCE), 2014. (Proceedings of the Coastal Engineering Conference; Band 2014-January).
Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Aufsatz in Konferenzband › Forschung › Peer-Review
}
TY - GEN
T1 - Influence of retention areas on the propagation of storm surges in the Weser estuary
AU - Zorndt, Anna C.
AU - Goseberg, Nils
AU - Schlurmann, Torsten
N1 - Copyright: Copyright 2016 Elsevier B.V., All rights reserved.
PY - 2014
Y1 - 2014
N2 - The hydrodynamics of estuaries are forced by the tides from the open sea and the river runoff from the catchment area. The hinterland is often low-lying and densely populated and must therefore be protected by dikes. Anthropogenic climate change poses new challenges to the coastal protection. However, changes in the geometry of the estuaries can have equally severe impacts on the deformation of a storm surge wave form when it propagates through the estuary. This affects the peak water levels and hence the design water levels. This contribution focuses on the influence of retention areas or forelands seaside of the main dike lines, which are protected by summer dikes against the less severe but more frequently occurring storm surges. This is shown at the example of a retention area in the Weser estuary, which has historically been the cite of a soccer stadium and thus hosts high values which stand in sharp contrast against the low safety level against flooding. The investigation is conducted with a 3D hydrodynamic numerical model which has previously been validated for the simulation of storm surges. The results show that even very small changes in the geometry of the estuary can have effects on design levels. This is even the case when they only regard the summer dike crests heights around retention areas and not their volume. Another important finding is that the geometry changes may have their maximum impacts quite far away from the specific river reach in which they are carried out. The results underline that for designing safe and reliable storm surge infrastructure, storm events should be studied in high resolution models which are able to resolve even small scale features such as summer dike lines.
AB - The hydrodynamics of estuaries are forced by the tides from the open sea and the river runoff from the catchment area. The hinterland is often low-lying and densely populated and must therefore be protected by dikes. Anthropogenic climate change poses new challenges to the coastal protection. However, changes in the geometry of the estuaries can have equally severe impacts on the deformation of a storm surge wave form when it propagates through the estuary. This affects the peak water levels and hence the design water levels. This contribution focuses on the influence of retention areas or forelands seaside of the main dike lines, which are protected by summer dikes against the less severe but more frequently occurring storm surges. This is shown at the example of a retention area in the Weser estuary, which has historically been the cite of a soccer stadium and thus hosts high values which stand in sharp contrast against the low safety level against flooding. The investigation is conducted with a 3D hydrodynamic numerical model which has previously been validated for the simulation of storm surges. The results show that even very small changes in the geometry of the estuary can have effects on design levels. This is even the case when they only regard the summer dike crests heights around retention areas and not their volume. Another important finding is that the geometry changes may have their maximum impacts quite far away from the specific river reach in which they are carried out. The results underline that for designing safe and reliable storm surge infrastructure, storm events should be studied in high resolution models which are able to resolve even small scale features such as summer dike lines.
KW - Design water levels
KW - Retention areas
KW - Storm surges
KW - Weser estuary
KW - Catchments
KW - Climate change
KW - Coastal engineering
KW - Floods
KW - Fluid dynamics
KW - Geometry
KW - Hydraulic structures
KW - Hydrodynamics
KW - Levees
KW - Shore protection
KW - Storms
KW - Water levels
KW - Anthropogenic climate changes
KW - Coastal protection
KW - Design water level
KW - High-resolution models
KW - Low safety levels
KW - Small-scale features
KW - Estuaries
KW - Design water levels
KW - Retention areas
KW - Storm surges
KW - Weser estuary
UR - http://www.scopus.com/inward/record.url?scp=84957643513&partnerID=8YFLogxK
M3 - Conference contribution
T3 - Proceedings of the Coastal Engineering Conference
BT - Proceedings of the 34th International Conference on Coastal Engineering, ICCE 2014
A2 - Lynett, Patrick
PB - American Society of Civil Engineers (ASCE)
T2 - 34th International Conference on Coastal Engineering, ICCE 2014
Y2 - 15 June 2014 through 20 June 2014
ER -