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Filtering by: Creator Otto-Bliesner, Bette L. Remove constraint Creator: Otto-Bliesner, Bette L. Committee Member Brook, Edward Remove constraint Committee Member: Brook, Edward Resource Type Dissertation Remove constraint Resource Type: Dissertation

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  • Late Pleistocene and Holocene glacier and climate change

    Creator:
    Marcott, Shaun Andrew
    Abstract:
    This dissertation presents results from three studies that address major scientific questions in glacial geology and paleoclimatology for the late Pleistocene and Holocene using relatively new geochemical and statistical techniques. Each of the studies attempts to answer a longstanding question in the respective field using geochemical or statistical methods that...
    Resource Type:
    Dissertation
    Full Text:
    , Zhengyu Liu 5, Bette L. Otto-Bliesner 6, Anders E. Carlson 5,7, Andy Ungerer 3, June Padman 3, Feng He

  • The Ocean Circulation and Carbon Cycle during the Last Glacial Maximum

    Creator:
    Muglia, Juan
    Abstract:
    During the Last Glacial Maximum (LGM, ∼ 21 ky before present) the atmospheric CO2 concentration was about 100 ppm lower than its pre-industrial (PI)value. The missing carbon from the atmosphere must have been stored in thedeep ocean during this period, but the mechanisms driving such re-distribution ofthe carbon cycle are...
    Resource Type:
    Dissertation
    Full Text:
    , while others predicted it as deeper and stronger (Otto-Bliesner et al., 2007). At the same time

  • Geochemical and Geostatisical Analyses of Quaternary Climate Variability over Millennial-to-Orbital Timescales

    Creator:
    Barth, Aaron M.
    Abstract:
    The goal of dissertation research was to use geochemical, statistical and geological methods to constrain and understand climate variability over several different time scales. Specifically, I have addressed three questions regarding past climate change: (1) how does the record of Irish cirque glaciers constrain the dimensions of the Irish Ice...
    Resource Type:
    Dissertation
    Full Text:
    ., Harrison, S.P., Kageyama, M., Bartlein, P.J., Masson-Delmotte, V., Abe-Ouchi, A., Otto-Bliesner, B., and

  • Application of Cosmogenic Nuclides and Argon Geochronology to Paleoclimate, Paleomagnetism, and Paleohydrology

    Creator:
    Balbas, Andrea M.
    Abstract:
    This dissertation uses argon geochronology and cosmogenic nuclide surface exposure dating methods to address three research questions. The first question concerns a geomagnetic instability recorded in lava flows on the island of Floreana in the Galapagos Archipelago. Changes in the Earth’s magnetic field (intensity and orientation) occur frequently throughout geologic...
    Resource Type:
    Dissertation
    Full Text:
    -84. Shakun, J. D., Clark, P. U., He, F., Lifton, N. A., Liu, Z., and Otto-Bliesner, B. L., 2015