Now showing items 285-304 of 899

    • Evolution of the Irminger Current anticyclones in the Labrador Sea from hydrographic data 

      Rykova, Tatiana A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2006-06)
      The continuous supply of heat and fresh water from the boundaries to the interior of the Labrador Sea plays an important role for the dynamics of the region and in particular, for the Labrador Sea Water formation. Thus, ...
    • The evolution of upper ocean thermal structure at 10°N, 125°W during 1997-1998 

      Farrar, J. Thomas (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2003-09)
      In this thesis I have endeavored to determine the factors and physical processes that controlled SST and thermocline depth at 10°N, 125°W during the Pan American Climate Study (PACS) field program. Analysis based on the ...
    • Evolutionary and ecological genomics in deep-sea organisms 

      Herrera Monroy, Santiago (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2015-02)
      Hydrothermal vents and coral ecosystems are conspicuous biological hotspots in the deep-sea. These ecosystems face increasing threats from human activities. Having thorough taxonomic inventories as well as understanding ...
    • Evolutionary demography of structured two-sex populations and sex ratios 

      Shyu, Esther (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2015-09)
      Males and females may differ in stage-specific survival, maturation, fertility, or mating availability. These demographic differences, in turn, affect population growth rates, equilibrium structure, and evolutionary ...
    • Evolutionary patterns within the Anthozoa (phylum Cindaria) reflected in ribosomal gene sequences 

      Berntson, Ewann A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1998-04)
      This thesis project assesses phylogenetic relationships within the phylum Cnidaria, at the subclass level within the Class Anthozoa, and at the ordinal level within the Subclass Octocorallia. Traditional cladistics using ...
    • Exact reconstruction of ocean bottom velocity profiles from monochromatic scattering data 

      Merab, Andre A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1987-01)
      This thesis presents the theoretical and computational underpinnings of a novel approach to the determination of the acoustic parameters of the ocean bottom using a monochromatic source. The problem is shown to be ...
    • Examining the effects of mid ocean ridge topography on 3D marine magnetometric resistivity model responses 

      Lassner, Lisa A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2004-06)
      Methods which measure seafloor resistivity are uniquely suited to studying hydrothermal circulation in the crust. The magnetometric resistivity (MMR) technique is a galvanic method which uses a bipole current source with ...
    • Exchanges between hemispheres and gyres : a direct approach to the mean circulation of the equatorial Pacific 

      Wijffels, Susan E. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1993-09)
      An extensive set of new high-quality hydrographic data is assembled in order to determine the mean circulation in the equatorial Pacific, and thus the pathways for cross-equatorial and cross-gyre exchange. Making up the ...
    • An experimental analysis of the dynamics of a submerged tethered cradle in a seaway 

      Cohen, Jay Martin (Woods Hole Oceanographic Institution, 1972-06)
      Submerged recovery of small submersibles by means of surface tethered platforms offers the possibility of operations in sea states higher than is now possible using surface recovery means. The Woods Hole Oceanographic ...
    • Experimental and seismological constraints on the rheology, evolution, and alteration of the lithosphere at oceanic spreading centers 

      deMartin, Brian J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2007-02)
      Oceanic spreading centers are sites of magmatic, tectonic, and hydrothermal processes. In this thesis I present experimental and seismological constraints on the evolution of these complex regions of focused crustal ...
    • Experimental investigation of scattering from randomly rough elastic cylinders 

      Gurley, John V. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1992-09)
      Acoustical backscattering from randomly rough infinitely long elastic cylinders surrounded by a fluid medium is examined. The cylinder radius is allowed to vary along its lengthwise axis creating one-dimensional rotationally ...
    • Experimental studies of melting and crystallization processes in planetary interiors 

      Krawczynski, Michael J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2011-09)
      Melting and crystallization processes on the Earth and Moon are explored in this thesis, and the topics of melt generation, transport, and crystallization are discussed in three distinct geologic environments: the Moon's ...
    • Experimental studies of turbulence in liquid-solid flows 

      Bohlen, Walter Franklin (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1969-08)
      A series of laboratory experiments were performed to ascertain the extent and manner of turbulence modification induced by low concentration suspended loads of near neutral buoyancy. Hot-wire measurements of the fluid ...
    • An experimental study of air entrainment by breaking waves 

      Lamarre, Eric (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1993-05)
      Breaking waves charge the surface layer of the ocean with small air bubbles which play an important role in air-sea gas transfer and in underwater acoustics near the ocean surface. This work reports on a series of ...
    • Experimental study of internal gravity waves over a slope 

      Cacchione, David A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1970-09)
      A series of laboratory experiments were conducted in a glass wave tank to investigate the propagation of internal gravity waves up a sloping bottom in a fluid with constant Brunt-Vaisala frequency. Measurements of the ...
    • An experimental study on mixing induced by gravity currents on a sloping bottom in a rotating fluid 

      Ohiwa, Mitchihiro (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2002-09)
      Mixing induced by gravity currents on a sloping bottom was studied through laboratory experiments in a rotating fluid. The dense fluid on the sloping bottom formed a gravity current that could be in regimes where the ...
    • Experiments and numerical simulations of the dynamics of an R.O.V. thruster during maneuvering 

      Knowles, James H. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1996-09)
      Propeller dynamics have typically been ignored in controller design, lumped into the category of 'unmodeled dynamics.' This is acceptable for propellers operating at constant speed in relatively uniform flows. Operational ...
    • Experiments in a rotating source-sink annulus 

      Ingram, Richard Grant (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1971-08)
      An experimental investigation of the different flow regimes in a rotating source-sink annulus is described. Both the steady and transient velocities are measured over a large range of Ekman Reynolds number and Rossby number. ...
    • Exploring the climate change refugia potential of equatorial Pacific coral reefs 

      Drenkard, Elizabeth J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2015-02)
      Global climate models project a 21st century strengthening of the Pacific Equatorial Undercurrent (EUC). The consequent increase in topographic upwelling of cool waters onto equatorial coral reef islands would mitigate ...
    • Exploring the distribution and physiological roles of bacterial membrane lipids in the marine environment 

      Saenz, James P. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2010-06)
      Lipids have a legacy in the geologic record extending back to the Archaean. Since the phylogenetic diversity of life is reflected in the structural diversity of biomolecules, lipid biomarkers that are shown to be diagnostic ...