Now showing items 177-196 of 843

  • Damping estimation, response prediction and fatigue calculation of an operational single pile platform 

    Cook, Michael F. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1982-01)
    A comparison between predicted and measured damping controlled dynamic response of an operational single pile platform (AMOCO's South Marsh Island Block 33B platform) is presented. In the predictive analysis, a finite ...
  • Danger of zooplankton feeding : the fluid signal generated by ambush-feeding copepods 

    Kiørboe, Thomas; Jiang, Houshuo; Colin, Sean P. (2010-06)
    Zooplankton feed in either of three ways: they generate a feeding current, cruise through the water, or they are ambush feeders. Each mode generates different hydrodynamic disturbances and hence exposes the grazers ...
  • Data adaptive velocity/depth spectra estimation in seismic wide angle reflection analysis 

    Leverette, Steven John (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1977-07)
    In studying the earth with reflection seismics, one of the major unknowns is the velocity structure of the medium. Techniques used to determine the velocity structure commonly involve multi-channel arrays which measure ...
  • Data assimilative hindcast of the Gulf of Maine coastal circulation 

    He, Ruoying; McGillicuddy, Dennis J.; Lynch, Daniel R.; Smith, Keston W.; Stock, Charles A.; Manning, James P. (American Geophysical Union, 2005-10-12)
    A data assimilative model hindcast of the Gulf of Maine (GOM) coastal circulation during an 11 day field survey in early summer 2003 is presented. In situ observations include surface winds, coastal sea levels, and shelf ...
  • Data report : stress measurements in the bottom boundary layer with BASS tripods STRESS II 1990-91 

    Gross, Thomas F.; Amft, Julie; Williams, Albert J. (Woods Hole Oceanographic Institution, 1993-11)
    Two Benthic Acoustic Strss Sensor (BASS) equipped tripods were deployed in the Sediment TRansport Events on Shelves and Slopes (STRESS) experiment on the Californa Shelf acquiring data from January to March 1991. They ...
  • Decadal analysis of hydrography and in situ nutrient budgets in the western and eastern North Atlantic subtropical gyre 

    Cianca, Andrés; Helmke, Peer; Mourino, Beatriz; Rueda, María José; Llinas, Octavio; Neuer, Susanne (American Geophysical Union, 2007-07-24)
    The current debate about the mechanisms and magnitude of new nutrient input to the euphotic zone in subtropical gyres calls for studies which consider large and mesoscale perspectives by combining in situ time series and ...
  • Deep ocean circulation and transport where the East Pacific Rise at 9–10°N meets the Lamont seamount chain 

    Lavelle, J. William; Thurnherr, Andreas M.; Ledwell, James R.; McGillicuddy, Dennis J.; Mullineaux, Lauren S. (American Geophysical Union, 2010-12-31)
    We report the first 3-D numerical model study of abyssal ocean circulation and transport over the steep topography of the East Pacific Rise (EPR) and adjoining Lamont seamount chain in the eastern tropical Pacific. We begin ...
  • A deep sea docking station for ODYSSEY class autonomous underwater vehicles 

    Bowen, Martin F.; Peters, Donald B. (Woods Hole Oceanographic Institution, 1998-06-10)
    Under subcontract to the Massachusetts Institute of Technology's (MIT) Sea Grant Autonomous Ocean Sampling Network (AOSN) program, engineers and researchers at the Woods Hole Oceanographic Institution (WHOI) designed, ...
  • Deep sea moorings fishbite handbook 

    Berteaux, Henri O.; Prindle, Bryce (Woods Hole Oceanographic Institution, 1987-03)
    The purpose of this handbook is to bring awareness and a degree of expertise to the very real problem of fish attacks on mooring lines and cables deployed in the open seas. Over the years the authors have carefully ...
  • Deep water towed array measurements at close range 

    Heaney, Kevin D.; Campbell, Richard L.; Murray, James J.; Baggeroer, Arthur B.; Scheer, Edward K.; Stephen, Ralph A.; D'Spain, Gerald L.; Mercer, James A. (Acoustical Society of America, 2013-10)
    During the North Pacific Acoustic Laboratory Philippine Sea 2009 experiment, towed array receptions were made from a towed source as the two ships transited from a separation of several Convergence Zones through a Closest ...
  • Deeply-towed underwater vehicle systems : a verified analytical procedure for creating parameterized dynamic models 

    Hover, Franz S. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1989-08)
    The dynamics of deeply-towed cable/vehicle systems are governed by nonlinear partial differential equations and as a result, trajectory control is generally difficult using the available techniques. This work examines ...
  • Defining DNA-based operational taxonomic units for microbial-eukaryote ecology 

    Caron, David A.; Countway, Peter D.; Savai, Pratik; Gast, Rebecca J.; Schnetzer, Astrid; Moorthi, Stefanie D.; Dennett, Mark R.; Moran, Dawn M.; Jones, Adriane C. (2009-06-19)
    DNA sequence information has been increasingly used in ecological research on microbial eukaryotes. Sequence-based approaches have included studies of the total diversity of selected ecosystems, the autecology of ...
  • Density currents in the Chicago River : characterization, effects on water quality, and potential sources 

    Jackson, P. Ryan; Garcia, Carlos M.; Oberg, Kevin A.; Johnson, Kevin K.; Garcia, Marcelo H. (2008-03)
    Bidirectional flows in a river system can occur under stratified flow conditions and in addition to creating significant errors in discharge estimates, the upstream propagating currents are capable of transporting contaminants ...
  • Deployment of a bottom monitor at a 30 meters deep site in the New York Bight Apex during the summer of 1993 

    Irish, James D. (Woods Hole Oceanographic Institution, 1993-09)
    A bottom instrument was deployed on May 5,1993, recovered and redeployed on June 22, 1993 and finally recovered on July 28, 1993 at a 30 meter site in the New York Bight Apex. The instrument measured currents, suspended ...
  • Deployment of the northern fish cage and mooring, University of New Hampshire — Open Ocean Aquaculture Program summer 2000 

    Irish, James D.; Paul, Walter; Ostrom, William M.; Chambers, Michael; Fredriksson, David W.; Stommel, Matt (Woods Hole Oceanographic Institution, 2000-09)
    The University of New Hampshire - Open Ocean Aquaculture (UNH-OOA) program has worked for the past few years on developing the technology to deploy and maintain fish cages in open, exposed northern waters. In June 1999, ...
  • Deployment operation procedures for the WHOI Ice-Tethered Profiler 

    Newhall, Kris; Krishfield, Richard A.; Peters, Donald B.; Kemp, John N. (Woods Hole Oceanographic Institution, 2007-07)
    Deployed and fixed to a suitable multi-year ice floe, the Ice-Tethered Profiler (ITP) can sustain near-real time measurements of upper ocean temperature and salinity for up to three years. Incorporating a specifically ...
  • Depth-dependent target strengths of gadoids by the boundary-element method 

    Francis, David T. I.; Foote, Kenneth G. (Acoustical Society of America, 2003-12)
    The depth dependence of fish target strength has mostly eluded experimental investigation because of the need to distinguish it from depth-dependent behavioral effects, which may change the orientation distribution. The ...
  • Design and evaluation of a directional antenna for ocean buoys 

    Frye, Daniel E.; Doherty, Kenneth W.; Hinton, Al (Woods Hole Oceanographic Institution, 1997-11)
    A system concept has been developed by Viasat, Inc. and Woods Hole Oceanographic Institution for improving the data telemetry bandwidth available on ocean buoys. This concept utilizes existing communications satellites ...
  • Design and testing of an acoustic ultra-short baseline navigation system 

    Tracey, Brian H. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1992-09)
    An ultra-short baseline acoustic navigation system has been developed which is capable of determining bearing to a sound source with an error of less than 1° in typical operational conditions. The system has a demonstrated ...
  • Design considerations for engineering autonomous underwater vehicles 

    Shah, Vikrant P. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2007-06)
    Autonomous Underwater Vehicles (AUVs) have been established as a viable tool for Oceanographic Sciences. Being untethered and independent, AUVs fill the gap in Ocean Exploration left by the existing manned submersible ...