Browsing Doctoral Theses by Subject "Ocean"

Now showing items 1-5 of 5

    • Extraction of uranium from seawater : Design and testing of a symbiotic system 

      Haji, Maha Niametullah (Massachusetts Institute of Technology, 2017)
      Seawater is estimated to contain 4.5 billion tonnes of uranium, approximately 1000 times that available in conventional terrestrial resources. Finding a sustainable way to harvest uranium from seawater will provide a source ...

    • Geophysical and petrological constraints on ocean plate dynamics 

      Sarafian, Emily Kathryn (Massachusetts Institute of Technology, 2017)
      This thesis investigates the formation and subsequent motion of oceanic lithospheric plates through geophysical and petrological methods. Ocean crust and lithosphere forms at mid-ocean ridges as the underlying asthenosphere ...

    • Internal hydraulic jumps with upstream shear 

      Ogden, Kelly Anne (Massachusetts Institute of Technology, 2017)
      Internal hydraulic jumps in flows with upstream shear are investigated numerically and theoretically. The role of upstream shear has not previously been thoroughly investigated, although it is important in many oceanographic ...

    • An investigation of basin-scale controls on upper ocean export and remineralization 

      Black, Erin E (Massachusetts Institute of Technology, 2018)
      The biological carbon pump (BCP) helps to moderate atmospheric carbon dioxide levels by bringing carbon to the deep ocean, where it can be sequestered on timescales of centuries to millennia. Climate change is predicted ...

    • The marine biogeochemistry of chromium isotopes 

      Moos, Simone Beatrice (Massachusetts Institute of Technology, 2018)
      In the ocean, chromium (Cr) is a redox-sensitive trace metal. The reduction of Cr(VI) to Cr(III) occurs in oxygen deficient zones (ODZs), and Cr reduction in general has been identified as a significant Cr isotope fractionation ...