Accession Number:

ADA516875

Title:

Sediment Flux and Trapping on the Skagit Tidal Flats

Descriptive Note:

Final rept. 1 Nov 2007-31 Dec 2009

Corporate Author:

WOODS HOLE OCEANOGRAPHIC INSTITUTION MA DEPT OF APPLIED OCEAN PHYSICS AND ENGINEERING

Personal Author(s):

• Geyer, W. R.
• Traykovski, Peter
• Ralston, David K.

Report Date:

2010-03-31

Pagination or Media Count:

13.0

Abstract:

The long-term objective is to determine the hydrodynamic processes controlling sediment transport and the associated morphologic response on tidal flats. The objectives of our research program were quantify the influence of barotropic tidal convergence on the lower Skagit tidal flats as a mechanism of sediment trapping and creation of ephemeral mud and sand deposits determine the role of density fronts in creating and transporting high concentration sediment suspensions, and assess the influence of these processes on sediment deposition and short-term morphological change distinguish the influence of wave-induced sediment transport from tidalfluvial processes, and determine how variations in tidal, fluvial and windwave forcing alter the bedform geometry, transport pathways, surficial sediment characteristics and tide-flat morphology.

Descriptors:

• *DELTAS
• *SEDIMENTOLOGY
• BACKSCATTERING
• BATHYMETRY
• INSTRUMENTATION
• STRATIFICATION
• OCEAN TIDES
• ESTUARIES
• EXPERIMENTAL DESIGN
• VELOCITY
• GEOMORPHOLOGY

Subject Categories:

• Physical and Dynamic Oceanography
• Hydrology, Limnology and Potamology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE