Now showing items 497-516 of 891

    • Mark-recapture statistics and demographic analysis 

      Fujiwara, Masami (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2002-06)
      Mark-recapture analysis of populations is becoming an important tool in population biology. Mark-recapture methods can be used to estimate transition probabilities among life-stages from capture histories of marked ...
    • Mass, heat and nutrient fluxes in the Atlantic Ocean determined by inverse methods 

      Rintoul, Stephen R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1988-03)
      Inverse methods are applied to historical hydrographic data to address two aspects of the general circulation of the Atlantic Ocean. The method allows conservation statements for mass and other properties, along with a ...
    • Mass, heat, oxygen and nutrient fluxes at 30°S and their implications for the Pacific-Indian through flow and the global heat budget 

      Macdonald, Alison M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1991-07)
      Six hydrographic basinwide sections, two in each of the three major ocean basins, are employed in a set of inverse calculations to determine the extent of exchange between the Pacific and Indian Oceans through the ...
    • A matched field processing approach to long range acoustic navigation 

      Deffenbaugh, Max (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1994-02)
      This thesis presents the design and simulation of an acoustic listen-only navigation system for use in a time-varying high-multipath environment. The system uses a ray tracing model of sound propagation in a horizontally ...
    • Maximizing AUV slow speed performance 

      LeBas, Phillip J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1997-09)
      A review of the Odyssey IIB autonomous underwater vehicle shows that energy costs associated with vehicle controls can be reduced and operational flexibility improved with relatively simple, low cost improvements. Because ...
    • Maximum likelihood time-domain beamforming using simulated annealing 

      Xu, Kevin (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-09)
      An algorithm is developed for underwater acoustic signal processing with an array of hydrophones. With various acoustic signals coming from different directions, the maximum likelihood approach is used to estimate the ...
    • Measurements and models of fine-structure, internal gravity waves and wave breaking in the deep ocean 

      Eriksen, Charles C. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1976-09)
      Measurements of horizontal and vertical current by propeller cluster current meters and temperature by thermistors mounted on a rigid array 8 m high and 20 m long moored in the oceanic main thermocline near Bermuda are ...
    • Measurements of a barotropic planetary vorticity mode in an eddy-resolving quasi-geostrophic model using acoustic tomography 

      Lawrence, Wendy B. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1988-08)
      A tomographic array is placed in a 2-layer, flat bottom, steady-wind driven quasi-geostrophic circulation model to investigate whether the analysis of acoustic travel time changes can detect large-scale barotropic ...
    • Measuring surface ocean wave height and directional spectra using an Acoustic Doppler Current Profiler from an autonomous underwater vehicle 

      Haven, Scott (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2012-09)
      The Acoustic Doppler Current Profiler (ADCP) is a proven technology which is capable of measuring surface wave height and directional information, however it is generally limited to rigid, bottom mounted applications which ...
    • Mechanical and geological controls on the long-term evolution of normal faults 

      Olive, Jean-Arthur L. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2015-02)
      This thesis investigates the long-term evolution of rift-bounding normal faults in extensional environments. My main objective is to develop a theoretical framework that explains the controls on maximum fault offset in ...
    • Mechanisms and variability of salt transport in partially-stratified estuaries 

      Bowen, Melissa M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2000-02)
      The variability of salt transport determines the variation of the length of the salinity intrusion and the large-scale density gradient in an estuary. This thesis contains three studies that address salt transport and ...
    • Mechanisms for enhanced turbulence in the Drake Passage region of the Southern Ocean 

      Merrifield, Sophia T. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2016-06)
      The Southern Ocean is one of the most energetic regions of the world ocean due to intense winds and storm forcing, strong currents in the form of the Antarctic Circumpolar Current (ACC) interacting with steep topography, ...
    • Mechanisms of action for aryl hydrocarbon receptor ligands in the PLHC-1 cell line 

      Hestermann, Eli V. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-12)
      Aryl hydrocarbon receptor (AHR) expression and activity was characterized in the teleost hepatoma cell line, PLHC-1. This work was carried out in order to gain insights into mechanisms of halogenated aromatic hydrocarbon ...
    • Mechanisms of heat transport through the floor of the equatorial Pacific Ocean 

      Crowe, John (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1981-02)
      The equatorial Pacific heat flow low, a major oceanic geothermal anomaly centered on the equatorial sediment bulge, was investigated using deeply penetrating heat flow probes (6-11 meters penetration) within three ...
    • Mechanisms of metal release from contaminated coastal sediments 

      Kalnejais, Linda H. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2005-09)
      The fate of trace metals in contaminated coastal sediments is poorly understood, yet critical for effective coastal management. The aim of this thesis is to investigate and quantify the mechanisms leading to the release ...
    • Mechanisms of turbulent mixing in the Continental Shelf bottom boundary layer 

      Shaw, William J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1999-09)
      The bottom boundary layer is an important dynamical region of shallow water flows. In this thesis, the problem of turbulent mixing in the coastal bottom boundary layer is investigated with a unique set of field measurements ...
    • Meridional circulation in the tropical North Atlantic 

      Friedrichs, Marjorie A. M. (Woods Hole Oceanographic Institution, 1993-01)
      A transatlantic CTD/ADCP section nominally located at 11°N was carried out in March 1989. In this paper relative geostrophic velocities are computed from these data via the thermal wind balance, with reference level choices ...
    • Mesoscale variability and mean flow interaction near the Gulf Stream as seen by satellite altimetry and numerical modelling 

      Botella, Juan (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2001-09)
      The interaction between the eddy field and the mean flow near the Gulf Stream is studied here using satellite altimeter measurements and an eddy resolving numerical modeL. The eddy vorticity flux in the quasigeostrophic ...
    • Metapopulation dynamics of the softshell clam, Mya arenaria 

      Strasser, Carly A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2008-06)
      In this dissertation, I explored metapopulation dynamics and population connectivity, with a focus on the softshell clam, Mya arenaria. I first worked towards developing a method for using elemental signatures retained ...
    • Microbial cycling of marine high molecular weight dissolved organic matter 

      Sosa, Oscar A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2016-06)
      Microorganisms play a central role mediating biogeochemical cycles in the ocean. Marine dissolved organic matter (DOM) – a reservoir of organic solutes and colloids derived from plankton is a major source of carbon, ...