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  • 1
    Publication Date: 2017-01-05
    Description: In studying the processes controlling particle distrbution of fine sediments over the continental shelf, the height, structure and dynamics of the bottom boundary layer must be better understood. The Sediment Transport Events on Shelves and Slopes (STRESS) program provides a comprehensive set of data over the bottom half of the water column at the 90m and the 130m isobaths along the northern California continental shelf during the winters of 1988-89 and 1990-91. This report presents the STRESS salinity, temperature, velocity, wave characteristics and attenuation data. The report describes the processing, provides plots and tables of the data and corresponding statistics for evaluation of the data, and documents the data fies. The combined set of moored and tripod mounted instrument measurements provides integrated, hourly-averaged profiles of the lower half of the water column at the four sites which can be used for analysis and modeling purposes.
    Description: Funding provided by the Office of Naval Research under contracts N00014-89-J-1067, N00014-89-J-1058 and N00014-89-J-1074.
    Keywords: Bottom boundary layer ; Sediment transport ; Continental shelf ; Integrated profies
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
    Format: 3705240 bytes
    Format: application/pdf
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  • 2
    Publication Date: 2017-01-04
    Description: Electromagnetic fluctuations and turbulent vorticity fluctuations were measured over a nine month period in the strong tidal flows of the Strait of Juan De Fuca off the coast of the Olympic Peninsula of Washington. A collaborative experiment was designed to test the hypothesis that electromagnetic fluctuations at the sea floor are forced by turbulent vorticity fluctuations in the bottom boundary layer. This report describes the measurement of turbulent vorticity fluctuations and the associated analysis which focuses on testing existing theoretical predictions for the inertial subrange and on characterizing spectra at frequencies below the inertial subrange.
    Description: Funding was provided by the Office of Naval Research through Grant No. N00014-94-I-0436.
    Keywords: Vorticity ; Electromagnetic fluctuations ; Bottom boundary layer ; Turbulent fluctuation ; Thomas G. Thompson (Ship) Cruise
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
    Format: 2333148 bytes
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  • 3
    Publication Date: 2018-01-22
    Description: To quantify and understand the role of vertical mixing processes in determining mid-shelf vertical structure of hydrographic and optical properties and particulate matter, the Office of Naval Research (ONR) funded a program called Coastal Mixing and Optics (CMO), which was conducted at a mid-shelf location in the Mid-Atlantic Bight, south of Martha's Vineyard, Massachusetts. As part of the CMO program, a tall tripod, called 'SuperBASS,' was equipped to collect a year-long, near-bottom time-series of velocity, temperature, salinity and pressure. The BASS sensors were modified to measure absolute as well as differential acoustic travel time, to provide sound speed (a surrogate for temperature) and velocity in a single sample volume. Seven BASS velocity and time travel sensors were placed between 0.4 and 7 meters above bottom. Three acoustic Doppler velocity (ADV) meters were mounted near the bottom-most BASS sensors at 0.3 meters above bottom. The sensors were used to obtain high-quality time-series measurements of velocity and temperature throughout a large fraction of the bottom bondary layer on the New England shelf. The measurements provide vertical structure of the Reynolds-averaged velocity and temperature fields, direct covariance estimates of turbulent Reynolds stress and turbulent heat flux, and indirect inertial range estimates of dissipation rate for turbulent kinetic energy and temperature variance. The purpose of this report is to describe the SuperBASS instrumentation and deployments, to provide summaries of the data collected, and to document the processing, preliminary analysis and archival of data collected for this component of the program.
    Description: Funding was provided by the Office of Naval Research under contract number N00014-95-1-0373.
    Keywords: Bottom boundary layer ; Stress ; Dissipation ; Oceanus (Ship : 1975-) Cruise ; Endeavor (Ship: 1976-) Cruise ; Seward Johnson (Ship) Cruise ; Coastal Mixing and Optics (CMO) Experiment
    Repository Name: Woods Hole Open Access Server
    Type: Technical Report
    Format: 5482992 bytes
    Format: application/pdf
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