Portland State University. Department of Geology
Richard E. Thoms
Date of Award
Master of Science (M.S.) in Geology
1 online resource (336 p.)
Sediment transport -- Columbia River, Beach erosion -- Columbia River, Water waves, Puget Island Region (Wash.)
Water waves generated by wind and ships; ebb tidal currents; water level fluctuations; and dredging impact sediment transport in shallow water of the lower Columbia River. Observations were made over a one-year period after sand dredged from the navigation channel was placed at three study sites in the Puget Island region, 46°15'N 123°25'W, Oregon and Washington. Sediment composition is fine to medium grained, low density dacitic volcanics with small percentages of pumice, heavy minerals, and basalt.
Abbe, Timothy, "Sediment dynamics on the shore slopes of the Puget Island reach of the Columbia River, Oregon and Washington" (1989). Dissertations and Theses. Paper 4306.