Now showing items 634-653 of 867

    • A probabilistic evaluation of tank ship damage in grounding events 

      Rawson, Charles E. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1998-06)
      Recent international and domestic regulatory actions have resulted in significant changes to oil tanker designs and intensified attention on predicting tanker environmental performance following groundings or collisions. ...
    • Probabilistic evaluation of tankship damage in collision events 

      Crake, Kurtis W. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1998-06)
      An analytical method for precidicting the extent of damage in ship collisions is developed. The method calculates both the longitudinal and transverse extents of damage for the struck ship as a function of collision ...
    • Production and analysis of a Southern Ocean state estimate 

      Mazloff, Matthew R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2006-09)
      A modern general circulation model of the Southern Ocean with one-sixth of a degree resolution is optimized to the observed ocean in a weighted least squares sense. Convergence toward the state estimate solution is carried ...
    • The production of temperature and salinity variance and covariance : implications for mixing 

      Schanze, Julian J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2013-02)
      Large-scale thermal forcing and freshwater fluxes play an essential role in setting temperature and salinity in the ocean. A number of recent estimates of the global oceanic freshwater balance as well as the global oceanic ...
    • Progressively communicating rich telemetry from autonomous underwater vehicles via relays 

      Murphy, Christopher A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2012-06)
      As analysis of imagery and environmental data plays a greater role in mission construction and execution, there is an increasing need for autonomous marine vehicles to transmit this data to the surface. Without access ...
    • A prony algorithm for shallow water waveguide analysis 

      Diemer, Ferdinand J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1987-08)
      Low frequency acoustic propagation in shallow water is examined from a normal mode context. By modelling the far field pressure field as a modal sum, propagating mode characteristics of wavenumber, initial phase, attennation ...
    • Propapation and attenuation characteristics of multilayered media 

      Koch, Stephen Patrick (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1979)
      An algorithm is proposed to numerically integrate the inhomogeneous depth-separated wave equation using a state variable technique. The solution obtained for two simple shallow water models is shown to agree well with ...
    • Propulsion optimization for ABE, an autonomous underwater vehicle (AUV) 

      Woodford, Thomas J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1991-09)
      The oceanographic community is moving towards unmanned autonomous vehicles to gather data and monitor scientific sites. The mission duration of these vehicles is dependent primarily on the power consumption of the ...
    • Purification and characterization of the hepatic microsomal monooxygenase system from the coastal marine fish Stenotomus chrysops 

      Klotz, Alan V. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1983-08)
      Three cytochrome P-450 forms were highly purified (8-12 nmol/mg) from the hepatic microsomes of the untreated coastal marine fish Stenotomus chrysops (scup) by detergent solubilization and column chromatography. Scup ...
    • A qualitative and quantitative study of the distribution of pelagic sediment in the Atlantic Basin 

      Webb, Helen F. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1997-02)
      Pelagic sedimentation is the primary modifier of topography generated by ridge-associated volcanic and tectonic processes. This thesis represents an effort to understand the processes of, and the general distribution of, ...
    • Quantification of the spatial and temporal evolution of stratified shear instabilities at high Reynolds number using quantitative acoustic scattering techniques 

      Fincke, Jonathan R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2015-02)
      The spatial and temporal evolution of stratified shear instabilities is quantified in a highly stratified and energetic estuary. The measurements are made using high-resolution acoustic backscatter from an array composed ...
    • Quantifying channelized submarine depositional systems from bed to basin scale 

      Lyons, William J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2004-09)
      The challenges of directly observing active turbidity currents necessitates the consideration of preserved deposits for deciphering the behavior of these systems. In this thesis, I take advantage 3-D subsurface seismic ...
    • Quantifying hurricane wind speed with undersea sound 

      Wilson, Joshua David (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2006-06)
      Hurricanes, powerful storms with wind speeds that can exceed 80 m/s, are one of the most destructive natural disasters known to man. While current satellite technology has made it possible to effectively detect and track ...
    • Quantifying overwash flux in barrier systems : an example from Martha’s Vineyard, Massachusetts, USA 

      Carruthers, Emily A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2011-09)
      Coastal barriers are particularly susceptible to the predicted effects of accelerated of sea-level rise and the potential for increased impacts of intense storms. Over centennial scales, barriers are maintained via ...
    • Quasigeostrophic flows and turbulence in a rotating homogeneous fluid 

      Colin de Verdiere, Alain (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1977-08)
      Stimulated by new evidence from both "in situ" oceanic observations and results from numerical modelling, a laboratory study of quasigeostrophic flow and turbulence in a rotating homogeneous fluid has been undertaken. Two ...
    • Quaternary morphology and paleoenvironmental records of carbonate islands 

      Toomey, Michael R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2014-02)
      Here I use a simple numerical model of reef profile evolution to show that the presentday morphology of carbonate islands has developed largely in response to late Pleistocene sea level oscillations in addition to variable ...
    • The quorum-sensing regulation of Vibrio fischeri : novel components of the autoinducer/LuxR regulatory circuit 

      Callahan, Sean M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-06)
      In the marine bacterium Vibrio fischeri two intercellular homoserine-Iactone signal molecules (luxI-dependent 30C6-HSL and the ainS-dependent C8-HSL) and the transcriptional activator LuxR regulate the luminescence system ...
    • Radiating instability of nonzonal ocean currents 

      Kamenkovich, Igor V. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1996-09)
      This thesis addresses the question of how a highly energetic eddy field could be generated in the interior of the ocean away from the swift boundary currents. The energy radiation due to the temporal growth of non-trapped ...
    • Radiation and dissipation of internal waves generated by geostrophic motions impinging on small-scale topography 

      Nikurashin, Maxim (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2009-02)
      Observations and inverse models suggest that small-scale turbulent mixing is enhanced in the Southern Ocean in regions above rough topography. The enhancement extends 1 km above the topography suggesting that mixing is ...
    • A radiocarbon method and multi-tracer approach to quantifying groundwater discharge to coastal waters 

      Gramling, Carolyn M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2003-09)
      Groundwater discharge into estuaries and the coastal ocean is an important mechanism for the transport of dissolved chemical species to coastal waters. Because many dissolved species are present in groundwater in ...