Search Constraints

Start Over
Filtering by: Committee Member Brook, Edward J. Remove constraint Committee Member: Brook, Edward J. Resource Type Dissertation Remove constraint Resource Type: Dissertation

Search Results

  • Applying a Dynamic Time Warping Approach to Stratigraphic Correlation: Quaternary Magnetostratigraphy and Ediacaran–Cambrian Chemostratigraphy

    Creator:
    Hagen, Cedric J.
    Abstract:
    Magneto- and chemostratigraphic correlation underpins much of our understanding of Earth history, yet typical correlation techniques are neither quantitative nor objective. Within this dissertation, I detail my efforts to develop and apply dynamic programming-based algorithms that accomplish optimal and reproducible stratigraphic alignment. I apply these algorithms to three geologic intervals:...
    Resource Type:
    Dissertation
    Full Text:
    DISSERTATION OF Cedric J. Hagen for the degree of Doctor of Philosophy in Geology presented on June 30

  • Deep-sea sediment paleomagnetism : a case study from the North Atlantic

    Creator:
    Strano, Sarah Elianna
    Abstract:
    Sedimentary records from the North Atlantic, instrumental in the development of modern paleo-geomagnetic concepts, show a highly variable field even during times of constant polarity. Yet, our understanding of how the magnetization is acquired in the sediments is poorly understood. Primary magnetizations preserved in deep-sea sediments are known to be...
    Resource Type:
    Dissertation
    Full Text:
    Ozkan-Haller, Edward Brook, without whom I would not be defending my dissertation today. They are

  • Analyzing large paleoclimate datasets : implications for past and future climate change

    Creator:
    Shakun, Jeremy D.
    Abstract:
    This dissertation presents the results of statistical analyses of large climate datasets from two time intervals – the 20th century instrumental record and the proxy record of the last deglaciation – in order to understand the forcings and mechanisms of past climate variability. A longstanding question in climate dynamics concerns...
    Resource Type:
    Dissertation
    Full Text:
    ., Clark, P.U., Carlson, A.E., Lynch-Stieglitz, J., Curry, W., Brook, E., Erickson, D., Jacob, R

  • 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:
    education, and friendship. Thank you for the great experience. Edward Brook provided valuable insight

  • 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:
    of my committee, Ed Brook, Ricardo Matano, Alan Mix, and Yvette Spitz, for guidance during my

  • 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:
    thank the members of my committee, Edward Brook, Anders Carlson, and Nicklas Pisias for their valuable

  • 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:
    geochronology: Geology, p. G37569. 37561. Benito, G., and O'Connor, J. E., 2003, Number and size of last

  • Abrupt deglacial climate changes in the North Pacific and implications for climate tipping points

    Creator:
    Praetorius, Summer Kate
    Abstract:
    Paleoclimate archives have revealed abrupt climate events that are superimposed on more gradual climate changes throughout the last glacial and deglacial periods. The underlying causes of such rapid climate changes are still poorly understood, but the strong expression of these events in northern hemisphere records likely points to climatic mechanisms...
    Resource Type:
    Dissertation
    Full Text:
    , Kristen Brewster, Edward Brook, Maureen Davies, Shaun Marcott, Jennifer McKay, June Padman, Fredrick

  • Paleoclimate, paleoventilation, and paleomagnetism as recorded in a 17kyr marine sediment record from the SE Alaska margin

    Creator:
    Davies, Maureen Helen
    Abstract:
    The deglacial behavior of the sub-Arctic North Pacific is poorly constrained, with many published records suffering from limited age control due to extensive post- depositional biogenic carbonate dissolution. Potential alternative dating methods could include the correlation of stable-isotopic and/or paleomagnetic secular variation records to an independently-dated regional template, however no...
    Resource Type:
    Dissertation
    Full Text:
    thoughtful input and oversight of my committee members: Andreas Schmittner, Nick Pisias, Ed Brook, and

  • Transcriptional and physiological response of Nitrosomonas europaea to inhibition by chlorinated aromatics and heavy metals

    Creator:
    Sandborgh, Sean C.
    Abstract:
    This research investigates the physiological and transcriptional responses of Nitrosomonas europaea when exposed to chlorinated aromatic compounds and heavy metals under varying environmental conditions. It was found that transcriptional responses of identified sentinel genes correlate well with nitrification inhibition. Sorption of metals to biomass was also investigated and found not...
    Resource Type:
    Dissertation
    Full Text:
    committee- Profs. Brian Wood, Peter Bottomley, Roger Ely, Ed Brook, and Stephen Lancaster for their time