Now showing items 406-425 of 900

    • The influence of topography on steady currents and internal waves 

      Hogg, Nelson G. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1971-01)
      Observations of the ocean in the vicinity of Bermuda on two different occasions show systematic distortions of the isotherms close to the island and an area of intensive mixing on the northern coast. Two mechanisms are ...
    • Influence of topography on the dynamics of baroclinic oceanic eddies 

      Pankratov, Kirill K. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1994-02)
      In this work we study motion of a baroclinic upper-ocean eddy over a large-scale topography which simulates a continental slope. We use a quasigeostrophic f-plane approximation with continuous stratification. To study ...
    • Influences on the oceanic biogeochemical cycling of the hybrid-type metals : cobalt, iron, and manganese 

      Noble, Abigail E. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2012-02)
      Trace metal cycling is one of many processes that influence ocean ecosystem dynamics. Cobalt, iron, and manganese are redox active trace metal micronutrients with oceanic distributions that are influenced by both biological ...
    • Infragravity waves over topography : generation, dissipation, and reflection 

      Thomson, James M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2006-09)
      Ocean surface infragravity waves (periods from 20 to 200 s) observed along the southern California coast are shown to be sensitive to the bottom topography of the shelf region, where propagation is linear, and of the ...
    • Initial settlement of marine invertebrate larvae : the role of passive sinking in a near-bottom turbulent flow environment 

      Hannan, Cheryl Ann (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1984-02)
      The hypothesis that planktonic larvae of benthic invertebrates sink through the water like passive particles in turbulent flows near the seabed was tested in the field using several groups of geometrically different ...
    • Insight into chemical, biological, and physical processes in coastal waters from dissolved oxygen and inert gas tracers 

      Manning, Cara C. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2017-02)
      In this thesis, I use coastal measurements of dissolved O2 and inert gases to provide insight into the chemical, biological, and physical processes that impact the oceanic cycles of carbon and dissolved gases. Dissolved ...
    • Insights into vitamin B12 production, acquisition, and use by marine microbes 

      Bertrand, Erin M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2012-02)
      The distribution and magnitude of marine primary production helps determine the ocean's role in global carbon cycling. Constraining factors that impact this productivity and elucidating selective pressures that drive the ...
    • Instabilities and radiation of thin, baroclinic jets 

      Talley, Lynne D. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1982-06)
      Oceanic fluctuations are dependent on geographical location. Near intense currents, the eddy field is highly energetic and has broad meridional extent. It is likely that the energy arises from instabilities of the intense ...
    • Instabilities of an eastern boundary current with and without large-scale flow influence 

      Wang, Jinbo (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2011-06)
      Eastern oceanic boundary currents are subject to hydrodynamic instability, generate small scale features that are visible in satellite images and may radiate westward into the interior, where they can be modified by the ...
    • Instability and energetics in a baroclinic ocean 

      Kim, Kuh (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1975-08)
      This thesis is made of two separate, but interrelated parts. In Part I the instability of a baroclinic Rossby wave in a two-layer ocean of inviscid fluid without topography, is investigated and its results are applied ...
    • Intake flow fields for a zooplankton pump sampling system 

      Brooks, James Ray (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1979-08)
      The flow fields entering intake forms oriented into a steady flume flow has been observed and quantified. This data is applied to a model of zooplankton sampler performance, to predict the fraction of the sampled ...
    • An integrated modal approach to surface and volume scattering in ocean acoustic waveguides 

      Tracey, Brian H. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1996-01)
      Acoustic propagation in the ocean can be strongly affected by small random variations in ocean properties, including rough surfaces and volume fluctuations in the ocean or seabed. Such inhomogeneities scatter part of the ...
    • Integrating bioenergetics and foraging behavior : the physiological ecology of larval cod (Gadus morhua) 

      Ruzicka, James J. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2004-06)
      How do larval cod, Gadus morhua, balance foraging effort against the high cost of swimming in a viscous hydrodynamic regime? A respirometry system was developed to measure the activity metabolism of individual larvae. ...
    • Inter-annual variability of acoustic ray travel times in the northeast Pacific 

      Furgerson, John A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1990-09)
      An acoustic tomography experiment consisting of a source near Hawaii and seven receivers along the west coast of North America was conducted from November 1987 to May 1988 and from February 1989 to July 1989. In this ...
    • Interacting populations : hosts and pathogens, prey and predators 

      Klepac, Petra (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2007-06)
      The interactions between populations can be positive, neutral or negative. Predation and parasitism are both relationships where one species benefits from the interaction at the expense of the other. Predators kill their ...
    • Interaction of an eddy with a continental slope 

      Wang, Xiaoming (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1992-09)
      This study concerns the barotropic interactions between a mesoscale eddy and a straight monotonic bottom topography. Through simple to relatively complicated modeling effort, some of the fundamental properties of the ...
    • Interaction of high frequency internal waves and the boundary layer on the continental shelf 

      Sanford, Lawrence P. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1984-08)
      Intermittent, shoreward propagating packets of high frequency first mode internal waves are common on the continental shelf when the water column is stratified and may induce large fluctuations in near bottom velocity. ...
    • The interaction of metal ions at the hydrous manganese dioxide-solution interface 

      Murray, James W. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1973-06)
      An experimental study of the interaction of metal ions with the surface of hydrous manganese dioxide has been completed. The results of these experiments have greatly improved our qualitative understanding of the adsorption ...
    • Interactions between calanoid copepod hosts and their associated microbiota 

      Almada, Amala A. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2015-02)
      Copepods are highly abundant environmental reservoirs of many bacterial pathogens. This thesis investigates whether copepod physiology influences the abundance and community structure of its microbiome. To this end, we ...
    • Interactions between mantle plumes and mid-ocean ridges : constraints from geophysics, geochemistry, and geodynamical modeling 

      Georgen, Jennifer E. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2001-09)
      This thesis studies interactions between mid-ocean ridges and mantle plumes using geophysics, geochemistry, and geodynamical modeling. Chapter 1 investigates the effects of the Marion and Bouvet hotspots on the ultra-slow ...