Nowell Arthur R. M.

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Arthur R. M.

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  • Technical Report
    The third annual report of the High Energy Benthic Boundary Layer Experiment : proceedings of the Keystone III Conference held at the Keystone Center for Continuous Education, March 11-15, 1980
    (Woods Hole Oceanographic Institution, 1980-07) Hollister, Charles D. ; Nowell, Arthur R. M. ; Smith, J. Dungan
    A meeting was held March 11-15, 1980 to develop and refine the hierarchy of problems to be addressed by the high energy benthic boundary layer experiment. This document outlines revised program goals and the critical scientific tasks needed to attain those goals. Also included is an interim "state of the program" report and a critical review by the Advisory Committee.
  • Technical Report
    Sea duct : a deep-sea computer-controlled recirculating flume for the study of sea floor stability : final report
    (Woods Hole Oceanographic Institution, 1987-08) Winget, Clifford L. ; Nowell, Arthur R. M. ; Terry, William E. ; Gordan, Allan G.
    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.