Unified View of Sediment Transport by Currents and Waves. IV: Application of Morphodynamic Model

Rijn, Leo C. van; Walstra, D.J.R.; Ormondt, Maarten van

doi:10.1061/(asce)0733-9429(2007)133:7(776)

Cited by 90 publications

(56 citation statements)

References 17 publications

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“…In the third phase, final model evaluation and the incremental phased improvement assessment will be completed and reported upon. This work will build upon what has been reported for numerical modeling of geomorphology (Lesser, 2004;Tonnon, 2007;van Duin et al 2004;Van Rijn et al 2007;and Marciano et al 2005). The sensitivity analysis of will focus on bottom type classification (sediment type, vegetation coverage, etc.).…”

Section: Approachmentioning

confidence: 69%

Geomorphologic Modeling of a Macro-tidal Embayment with Extensive Tidal Flats: Skagit Bay, WA

Hibler

Maxwell²

2008

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Award Number: N00014-081-0952 http://energyenvironment.pnl.gov LONG-TERM GOALSUnderstand morphology changes of mud tidal flats and provide quantification of the sensitivity of these changes to tidal action, river discharge and shoreline development. OBJECTIVESDemonstrate the use of a community numerical model for estimating the tidal flat morphology. The ONR/Delft Community model is being evaluated as a physically-based numerical simulation tool for several kinds of investigations. The objective of the project is to further demonstrate it use for tidal flat/channel systems.Investigate the relative roles of tidal action, river discharge and shoreline development on morphology. From a model tuning perspective, this objective includes advancing the understanding of the sensitivity of the model to parameter value adjustments and inclusion or exclusion of specific sediment transport processes and characterization in tidal flat and channel systems.Integrate model analyses with observations and field planning efforts. The model fidelity will be improved by incorporation of observational data in terms of model configuration, the assignment of boundary and initial conditions and for calibration and validation efforts. There is also a benefit to using the model to help with the design of the field programs and the interpretation of observational datasets. This has been demonstrated in other studies (e.g. . APPROACHA three-phase approach will be used. All phases are model configuration and evaluation intensive. In the first phase the model was configured with best available information. Sensitivity tests were conducted on variations on discharge to circulation in the Skagit Bay. In the second phase, 1

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Section: Approachmentioning

confidence: 69%

Geomorphologic Modeling of a Macro-tidal Embayment with Extensive Tidal Flats: Skagit Bay, WA

Hibler

Maxwell²

2008

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“…The derivation of the comprehensive sediment budget is based on a Delft3D model (Lesser et al, 2004;Van Rijn et al, 2007) of intermediate scale covering the MCC including wind, wave and river discharge forcing conditions. In order to evaluate the longevity of the restoration alternatives under averaged and hurricane conditions both contributions in the sediment budget derivation were considered.…”

Section: Approachmentioning

confidence: 99%

A Comprehensive Sediment Budget for the Mississippi Barrier Islands

Walstra¹,

Vroeg²,

Vries³

et al. 2012

Int. Conf. Coastal. Eng.

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In order to conceive any realistic plan for post-Katrina island restoration, it is necessary to understand the physical processes that move sand along the littoral drift zone off the coast of Mississippi. This littoral zone influences the character of the Mississippi barrier islands as they exist in an ever changing cycle. To help in this understanding, a sediment transport model was conducted to establish a current sediment budget for the islands. This study evaluated the existing regional sediment transport magnitudes and directions for the Mississippi and Alabama barrier islands fronting Mississippi Sound including daily conditions and hurricanes. A method was developed to incorporate all relevant hurricanes from 1917 to 2010 in the analysis. For the long term average net longshore transport along the southern shorelines of the barriers (i.e. exposed to the Gulf of Mexico), the contribution of year-averaged conditions and hurricanes are of similar order of magnitude, although the mean annual percentage occurrence of hurricanes is no more than about 3%. Along the northern shores (Mississippi Sound side) the transport is considerably smaller and the contributions of cold fronts and hurricanes to the sediment transports are more or less equal. For the year-averaged conditions (excluding hurricanes) a westward directed net transport is found. The net effect of the historic hurricanes is also westward in direction. However, for individual hurricanes (e.g. Camille and Katrina) the net transport along Ship Island can be directed eastward due to the dominance of ebb flows after the eye of the hurricane had passed.

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“…We have applied this resolution procedure for predicting long term reservoir sedimentation (Dewals et al 2004;Dewals et al 2008a), leading to a dramatic reduction in computational time compared to the purely synchronous resolution. Using the so-called morphological factor may also help to save computational resources within the synchronous resolution procedure (Kleinhans et al 2008;van Rijn et al 2007). …”

Section: Synchronous Vs Sequential Resolution Proceduresmentioning

confidence: 99%

Advanced Topics in Sediment Transport Modelling: Non-alluvial Beds and Hyperconcentrated Flows

Dewals¹,

Rulot²,

Erpicum³

et al. 2011

Sediment Transport

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Unified View of Sediment Transport by Currents and Waves. IV: Application of Morphodynamic Model

Cited by 90 publications

References 17 publications

Geomorphologic Modeling of a Macro-tidal Embayment with Extensive Tidal Flats: Skagit Bay, WA

Geomorphologic Modeling of a Macro-tidal Embayment with Extensive Tidal Flats: Skagit Bay, WA

A Comprehensive Sediment Budget for the Mississippi Barrier Islands

Advanced Topics in Sediment Transport Modelling: Non-alluvial Beds and Hyperconcentrated Flows

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