Document Type


Publication Date



Columbia River Estuary (Or. and Wash.) -- Hydrodynamics -- Remote sensing, Tides, Marine sediments -- Measurement, Sediment transport -- Mathematical models


The Columbia River plume transports dissolved and particulate load, phyto- and zooplankton,and larvae across the shelf. It also facilitates primary production and influences food-web structure through its supply of silicate and micronutrients. Small-scale phenomena such as plume fronts and internal waves generated by the plume can greatly affect vertical mixing between the plume and ocean waters. Internal waves that are generated at the front of the river plume and propagate off shoreward [Nash and Moum 2005; Orton and Jay 2005] both cause mixing and transport plume water into the adjacent coastal ocean. We use Synthetic Aperture Radar (SAR) images and vessel data to obtain the dynamic parameters of the internal waves generated at the Columbia River plume front, analyze effects of the internal waves on the vertical mixing, and estimate horizontal transport in theplume water layer.


Poster presented at "American Geophysical Union, Ocean Science Meeting" Honolulu, HI, February 20-24 2006

Persistent Identifier