Accession Number : ADA527069


Title :   Geomorphologic Modeling of a Macro-Tidal Embayment With Extensive Tidal Flats: Skagit Bay, WA


Descriptive Note : Annual rept.


Corporate Author : PACIFIC NORTHWEST NATIONAL LAB SEQUIM WA


Personal Author(s) : Hibler, Lyle ; Maxwell, Adam


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a527069.pdf


Report Date : Jan 2009


Pagination or Media Count : 9


Abstract : Long-term goals: The long term goal of the project is to understand processes affecting morphology changes of muddy tidal flats and provide quantification of the sensitivity of these changes to tidal action, river discharge and shoreline development (e.g., dikes and jetties). Objectives: The objective of this effort is to demonstrate the use of a community numerical model for prediction and investigation of tidal flat morphology and forcing parameters. The ONR/Delft community model is being evaluated as a physically-based numerical simulation tool for several investigations, and this effort applies it specifically to tidal flat/channel systems. Within this objective, the investigators seek to investigate the relative roles of tidal action, river discharge, and shoreline modification on flow over the tidal flats and resulting effects on morphologic modeling. 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.


Descriptors :   *GEOMORPHOLOGY , *COASTAL REGIONS , TIDES , BREAKWATERS , DIKES , MUD , SEDIMENT TRANSPORT , MATHEMATICAL MODELS , WETLANDS


Subject Categories : Physical and Dynamic Oceanography
      Geology, Geochemistry and Mineralogy


Distribution Statement : APPROVED FOR PUBLIC RELEASE