Sea duct : a deep-sea computer-controlled recirculating flume for the study of sea floor stability : final report
Date
1987-08Author
Winget, Clifford L.
Concept link
Nowell, Arthur R. M.
Concept link
Terry, William E.
Concept link
Gordan, Allan G.
Concept link
Metadata
Show full item recordCitable URI
https://hdl.handle.net/1912/7555DOI
10.1575/1912/7555Abstract
The Sea Duct Ocean-Bottom Laboratory is a computer controlled recirculating inverted flume for the in-situ study
of sediment transport. It is designed to measure the sea floor response to controlled currents analogous to those
generated by surface waves, tidal, or deep ocean storms.
The external support frame is an equilateral triangle with sixteen foot sides. It is 12 feet high, has an air weight of
12,500 lbs., and a 2800 lb. submerged weight. Three lead acid battery packs located at the vertex of the triangle legs
provide power for the recirculating water pumps, hydraulic power, and ancillary equipment.
The inner rotatable structure consists of a 4 foot long by 2 foot wide open bottom windowed test section that is 9 inches
high. It is connected to 30 feet of 8 inch tube configured as an elongated toroid. Above the test section is a traverse
carriage with stereo camera, flash, and a laser Doppler velocimeter to measure fluid stresses.
Internal flow velocities are controlled and can be ramped up to approximately 2 ft/sec providing shear stress sufficient
to scour sand, silts, and fine clays. Water and sediment sampling devices obtain specimens from inside and outside
the test section. This report consists of three sections. The first subdivision
discusses the electro-mechanical systems and deployment-
recovery techniques, while the second portion
covers the microprocessor controller and its support
equipment. The third section contains the appendices, which
consists of program listings, schematics, system and deployment
check-list, etc.
Suggested Citation
Technical Report: Winget, Clifford L., Nowell, Arthur R. M., Terry, William E., Gordan, Allan G., "Sea duct : a deep-sea computer-controlled recirculating flume for the study of sea floor stability : final report", 1987-08, DOI:10.1575/1912/7555, https://hdl.handle.net/1912/7555Related items
Showing items related by title, author, creator and subject.
-
Cohesive and mixed sediment in the Regional Ocean Modeling System (ROMS v3.6) implemented in the Coupled Ocean–Atmosphere–Wave–Sediment Transport Modeling System (COAWST r1234)
Sherwood, Christopher R.; Aretxabaleta, Alfredo L.; Harris, Courtney K.; Rinehimer, J. Paul; Verney, Romaric; Ferré, Bénédicte (Copernicus Publications on behalf of the European Geosciences Union, 2018-05-14)We describe and demonstrate algorithms for treating cohesive and mixed sediment that have been added to the Regional Ocean Modeling System (ROMS version 3.6), as implemented in the Coupled Ocean–Atmosphere–Wave–Sediment ... -
Total molybdate reactive and unreactive phosphorus concentrations from sediment extracts from sediment samples collected during cruises in the Arctic Ocean, California Margin, and Equatorial Pacific from 1992-1998
Paytan, Adina; Defforey, Delphine (Biological and Chemical Oceanography Data Management Office (BCO-DMO). Contact: bco-dmo-data@whoi.edu, 2020-07-02)Total molybdate reactive and unreactive phosphorus concentrations from sediment extracts from sediment samples collected during cruises in the Arctic Ocean, California Margin, and Equatorial Pacific from 1992-1998. For ... -
Reconstructing the thermal structure of the upper ocean : insights from planktic foraminifera shell chemistry and alkenones in modern sediments of the tropical eastern Indian Ocean
Mohtadi, Mahyar; Oppo, Delia W.; Luckge, Andreas; De Pol-Holz, Ricardo; Steinke, Stephan; Groeneveld, Jeroen; Hemme, Nils; Hebbeln, Dierk (American Geophysical Union, 2011-09-10)Shell chemistry of planktic foraminifera and the alkenone unsaturation index in 69 surface sediment samples in the tropical eastern Indian Ocean off West and South Indonesia were studied. Results were compared to modern ...