Observations of a fast burst of the deep western boundary undercurrent and sediment transport in South Wilmington Canyon from DSRVAlvin |
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| Authors: | Stephen J Culver Charlotte A Brunner Charles A Nittrouer |
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| Institution: | (1) Department of Geological Sciences, Old Dominion University, 23529-0496 Norfolk, VA;(2) Department of Geological Sciences, California State University, 94542 Hayward, CA;(3) Marine Science Research Center, State University of New York, 11794 Stony Brook, NY |
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| Abstract: | On October 3 and 4, 1986, DSRVAlvin dives encountered a strong current at 2,300 m in South Wilmington Canyon. The current, estimated at 1 knot, transported surficial
sediment and constructed and modified bedforms. It appears to have been constant in its direction of flow from 30 to 40°.
The observed current was probably a burst of fast flow in a region of slow average currents in the Deep Western Boundary Undercurrent.
Such episodic events may have a greater influence on the stratigraphic record than the temporally longer more tranquil flow
conditions. |
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