Now showing items 285-304 of 868

    • 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 ...
    • Extracting energy from unsteady flows through vortex control 

      Streitlien, Knut (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1994-09)
      Vortex control is a new paradigm in fluid mechanics, with applications to propulsion and wake reduction. A heaving and pitching hydrofoil placed in a flow with an array of oncoming vortices can achieve a very high ...
    • Faunal biogeography, community structure, and genetic connectivity of North Atlantic seamounts 

      Cho, Walter W. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2008-09)
      The mechanisms of faunal dispersal across ocean basins are key unknowns toward understanding of the modern biogeography and biodiversity of deep-sea fauna. Seamounts are considered to play a defining role in faunal ...
    • The feasibility of sodar wind profile measurements from an oceanographic buoy 

      Berg, Allison M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2006-09)
      This thesis explores the feasibility of making wind speed measurements from an oceanographic buoy using a Doppler sodar. In the fall of 2005, we deployed a Scintec SFAS sodar on an ASIS buoy. Roughly one week of buoy ...
    • Feeding habits of the yellowtail flounder and production of its invertebrate prey on Georges Bank 

      Collie, Jeremy S. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1985-09)
      As part of the Georges Bank Benthic Infauna Monitoring Program, size-frequency analysis was used to study the life history and production of three benthic amphipod species: Ampelisca agassizi, Unciola inermis and Ericthonius ...
    • Feminization in common terns (Sterna hirunda) : relationship to persistent organic contaminants 

      Hart, Constance A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1998-01)
      Concern about skewed sex ratios and female-female pairings among endangered roseate terns (Sterna dougallii) on Bird Island in Buzzards Bay, Massachusetts prompted studies with common terns from the same site as a surrogate ...
    • Field deployable dynamic lighting system for turbid water imaging 

      Gorman, Geoffrey A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2011-09)
      The ocean depths provide an ever changing and complex imaging environment. As scientists and researches strive to document and study more remote and optically challenging areas, specifically scatter-limited environments. ...
    • A field investigation of diffusion within a submerged plant canopy 

      Tarrell, Alvin E. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1997-09)
      Saltwater marshes and wetlands are important buffers at the land-sea interface. Among the most biologically active ecosystems on Earth, natural and man-made wetlands are important interceptors of pollutants and nutrients ...
    • Field measurements of a swell band, shore normal, flux divergence reversal 

      Link, Shmuel G. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2011-06)
      Throughout this thesis we will discuss the theoretical background and empirical observation of a swell band shore normal flux divergence reversal. Specifically, we will demonstrate the existence and persistence of the ...