Now showing items 437-456 of 869

    • Kinematic evaluation of end effector design 

      Edwards, Gary W. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1992-09)
      The complex, many degree-of-freedom end effectors at the leading edge of technology would be unusable in the sea bottom research environment. Simpler designs are required to provide adequate reliability for subsea ...
    • The kinematics and dynamics of the New England continental shelf and shelf/slope front 

      Flagg, Charles Noel (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1977-04)
      A 37 day long field program was carried out in March 1974 on the New England continental shelf break to study the current and hydrographic structure and variability on the shelf and in the shelf/slope front. A second ...
    • Kinematics and energetics of the mesoscale mid-ocean circulation : MODE 

      Richman, James G. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1976-09)
      The temporal and spatial variability of low frequency moored temperature and velocity observations, obtained as part of the Mid-Ocean Dynamics Experiment (MODE), are analyzed to study the kinematics and energetics of ...
    • Kinetic processes of mantle minerals 

      Koga, Kenneth T. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-09)
      This dissertation discusses the experimental results designed to constrain the processes of MORB generation. The main focus of this study is to investigate the location and the related processes of the transformation ...
    • Laboratory and field-based investigations of subsurface geochemical processes in seafloor hydrothermal systems 

      Reeves, Eoghan P. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2010-06)
      This thesis presents the results of four discrete investigations into processes governing the organic and inorganic chemical composition of seafloor hydrothermal fluids in a variety of geologic settings. Though Chapters ...
    • Laboratory evaluation of laser-induced breakdown spectroscopy (LIBS) as a new in situ chemical sensing technique for the deep ocean 

      Michel, Anna Pauline Miranda (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2007-09)
      Present-day expeditionary oceanography is beginning to shift from a focus on short- term ship and submersible deployments to an ocean observatory mode where long- term temporally-focused studies are feasible. As a result, ...
    • Laboratory measurements of the sound generated by breaking waves 

      Loewen, Mark Richard (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1991-12)
      Breaking waves dissipate energy, transfer momentum from the wind to surface currents and breaking enhances the transfer of gas and mass across the air-sea interface. Breaking waves are believed to be the dominant source ...
    • A laboratory study of localized boundary mixing in a rotating stratified fluid 

      Wells, Judith R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2003-02)
      Oceanic observations indicate that abyssal mixing is localized in regions of rough topography. How locally mixed fluid interacts with the ambient fluid is an open question. Laboratory experiments explore the interaction ...
    • Large scale oceanic circulation and fluxes of freshwater, heat, nutrients and oxygen 

      Ganachaud, Alexandre S. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-12)
      A new, global inversion is used to estimate the large scale oceanic circulation based on the World Ocean Circulation Experiment and Java Australia Dynamic Experiment hydrographic data. A linear inverse "box" model is ...
    • Large-area visually augmented navigation for autonomous underwater vehicles 

      Eustice, Ryan M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2005-06)
      This thesis describes a vision-based, large-area, simultaneous localization and mapping (SLAM) algorithm that respects the low-overlap imagery constraints typical of autonomous underwater vehicles (AUVs) while exploiting ...
    • Larval dispersal between hydrothermal vent habitats 

      Kim, Stacy L. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1996-01)
      Hydrothermal vents are isolated, short-term habitats that support unique biotic assemblages with relatively high biomass utilizing an unusual energy source. How these communities establish themselves and maintain species ...
    • Larval ecology and synchronous reproduction of two crustacean species : Semibalanus balanoides in New England, USA and Gecarcinus quadratus in Veraguas, Panama 

      Gyory, Joanna (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2011-02)
      The environmental cues for synchronous reproduction were investigated for two highly abundant, ecologically important crustacean species: the temperate acorn barnacle, Semibalanus balanoides, and the tropical terrestrial ...
    • Laser diffraction particle sizing : sampling and inversion 

      Riley, James B. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1987-08-13)
      The inverse problem of obtaining particle size distributions from observations of the angular distribution of near forward scattered light is reexamined. Asymptotic analysis of the forward problem reveals the ...
    • Late cretaceous (Maestrichtian) calcareous nannoplankton biogeography with emphasis on events immediately preceding the cretaceous/paleocene boundary 

      Ehrendorfer, Thomas W. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1993-02)
      The Maestrichtian biogeography of calcareous nannoplankton is investigated in order to characterize paleoenvironmental conditions in the marine photic zone during the latest Cretaceous. Different theories explaining the ...
    • Late Holocene hurricane activity and climate variability in the northeastern Gulf of Mexico 

      Lane, D. Philip (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2011-09)
      Hurricane activity in the Northeastern Gulf of Mexico and its relationship to regional and large-scale climate variability during the Late Holocene is explored. A 4500-year record of hurricane-induced storm surges is ...
    • Late Paleogene (Eocene to Oligocene) paleoceanography of the northern North Atlantic 

      Miller, Kenneth George (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1982-10)
      Seismic stratigraphic evidence from the western and northern North Atlantic indicates that a major change in abyssal circulation occurred in the latest Eocene to earliest Oligocene. In the northern North Atlantic, the ...
    • Late Quaternary climate variability and terrestrial carbon cycling in tropical South America 

      Fornace, Kyrstin L. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2016-02)
      Characterizing global and regional climate variability and climate-carbon cycle interactions in the past provides critical context for evaluating present and future climate trends. In this thesis, I use stable isotope ...
    • Late quaternary sedimentation in the Eastern Angola Basin 

      Bornhold, Brian D. (Woods Hole Oceanographic Institution, 1973-11)
      Recent sedimentation in the eastern Angola Basin includes calcareous oozes in the north and south (Guinea Rise and Walvis Ridge) and hemipelagic lutites and terrigenous turbidites on the Congo Cone and on the Angola rise ...
    • Life cycle evolution and systematics of Campanulariid hydrozoans 

      Govindarajan, Annette F. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2004-09)
      The purpose of this thesis is to study campanulariid life cycle evolution and systematics. The Campanulariidae is a hydrozoan family with many life cycle variations, and provide an excellent model system to study life ...
    • Life cycle studies of the red tide dinoflagellate species complex Alexandrium tamarense 

      Brosnahan, Michael L. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2011-02)
      Blooms of toxic species within the algal dinoflagellate species complex Alexandrium tamarense may cause Paralytic Shellfish Poisoning, a significant and growing environmental threat worldwide. However, blooms of closely ...