Fiscal Year	2013
Division	Graduate School of Engineering & Applied Science
Department	Oceanography
Investigator(s)	MacMahan, James H.
Sponsor	Office of Naval Research (Navy)
Summary	The main objectives of our effort are to measure and model from the inner-shelf to the lower Columbia River: 1) the three-dimensional flow velocity distribution spatially and temporally during a range of conditions, 2) the tidal exchange of sediments, optics, salinity, and temperature, 3) the surface particle pathways, horizontal mixing, transport, and corresponding Lagrangian Coherent Structure (LCSs) as a function of tidal flow and stratification, 4) the sea-swell and infragravity wave-current interactions, 5) the spatial variability of bed sediment grain size and the concomitant bedform development to evaluate the spatial distribution of bottom friction required for model validation, and 6) the residual flow circulation associated with the forcing by waves, wind and density differences. In addition, our effort will utilize unique measurement platforms for collecting data in this harsh environment using autonomous and mobile platforms and new inexpensive tracking drifters.
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Publications	Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal
Data	Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal