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Movement of sea-bed drifters near Columbia river
Sea-bed drifters were dropped on continental shelf within 50 km of mouth of Columbia River from June to October 1966; 25% of these, recovered on nearby beaches and in trawls, provide first local view of residual movement of identified objects near bottom; net movement in water deeper than 55 m was north, and that at lesser depths was south and toward beach; drifters grounded in considerable numbers on ocean beach within 5 km north of north jetty of Columbia River and also on Clatsop Spit 5 km upriver on its south bank; relatively few were found on ocean beach near south jetty; movement near shore is in agreement with that deduced for bottom water, considering prevailing seasonal winds and waves and intrusion of seawater into estuary.
Movement of sea-bed drifters near Columbia river
Sea-bed drifters were dropped on continental shelf within 50 km of mouth of Columbia River from June to October 1966; 25% of these, recovered on nearby beaches and in trawls, provide first local view of residual movement of identified objects near bottom; net movement in water deeper than 55 m was north, and that at lesser depths was south and toward beach; drifters grounded in considerable numbers on ocean beach within 5 km north of north jetty of Columbia River and also on Clatsop Spit 5 km upriver on its south bank; relatively few were found on ocean beach near south jetty; movement near shore is in agreement with that deduced for bottom water, considering prevailing seasonal winds and waves and intrusion of seawater into estuary.
Movement of sea-bed drifters near Columbia river
ASCE Structural Eng Conf -- Preprint
Morse, B.A. (author) / Gross, M.G. (author) / Barnes, C.A. (author)
ASCE Structural Engineering Conference ; 1967
1967
21 pages
Conference paper
English
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