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  • Tsunami Loading on Coastal Infrastructure

    Creator:
    Xie, Zhongliang
    Abstract:
    The safety of coastal infrastructure has been a concern after the Indian Ocean Tsunami in 2004 and the Great East Japan Tsunami in 2011. The western coast of the United States is also exposed to tsunami hazards due to the Cascadia subduction zone. Therefore, it is critical to design coastal...
    Resource Type:
    Dissertation
    Full Text:
    Coastal Infrastructure Abstract approved: Michael H. Scott The safety of coastal infrastructure has

  • Prokaryotes associated with marine crust

    Creator:
    Mason, Olivia Underwood
    Abstract:
    Oceanic crust covers nearly 70% of the Earth's surface, of which, the upper, sediment layer is estimated to harbor substantial microbial biomass. Marine crust; however, extends several kilometers beyond this surficial layer, and includes the basalt and gabbro layers. In particular, the basalt layer has high permeabilities which allows for...
    Resource Type:
    Dissertation
    Full Text:
    in Archean Pillow Lavas. Science 304: 578-581. 10 Furnes, H., Staudigel, H., Thorseth, I.H

  • Microbial alteration of the seafloor

    Creator:
    Josef, Jennifer A.
    Abstract:
    In the early 1980's the first evidence of biological alteration of basalt glass (sideromelane) was published. Since that time additional evidence, including DNA staining, isotopic abundance and chemical mapping, has come to light suggesting that this unique alteration of glass can be attributed to microbial activity. Microbial alteration textures have...
    Resource Type:
    Masters Thesis
    Full Text:
    glass. In 1992 Thorseth and co-workers provided a viable mechanism for microbial alteration. They

  • Biotic alteration of oceanic basalt glass

    Creator:
    Drinnan, Megan R.
    Abstract:
    The subsurface microbial biosphere in the igneous oceanic crust has implications for global geochemical cycling, early life on Earth, and the search for life on Mars. Microscopic evidence of a subsurface microbial ecosystem includes biotic alteration textures associated with basaltic glass. The exact conditions in the basaltic layer that make...
    Resource Type:
    Masters Thesis
    Full Text:
    ., 2006; Storrie-Lombardi and Fisk, 2004; Thorseth et al., 2001; Thorseth et al., 1998; Thorseth et al

  • In situ enrichment of ocean crust microbes on igneous minerals and glasses using an osmotic flow‐through device

    Creator:
    Smith, Amy, Popa, Radu, Fisk, Martin, Nielsen, Mark, Wheat, C. Geoffrey, Jannasch, Hans W., Fisher, Andrew T., Becker, Keir, Sievert, Stefan M., and Flores, Gilberto
    Abstract:
    The Integrated Ocean Drilling Program (IODP) Hole 1301A on the eastern flank of Juan de Fuca Ridge was used in the first long-term deployment of microbial enrichment flow cells using osmotically driven pumps in a subseafloor borehole. Three novel osmotically driven colonization systems with unidirectional flow were deployed in the...
    Resource Type:
    Article
    Full Text:
    2011; Published 21 June 2011. Smith, A., R. Popa, M. Fisk, M. Nielsen, C. G. Wheat, H. W. Jannasch, A

  • Extent of the microbial biosphere in the oceanic crust

    Creator:
    Heberling, Cara, Lowell, Robert P., Liu, lei, and Fisk, Martin R.
    Abstract:
    We estimate the depth of the 120°C isotherm by constructing crustal thermal gradients based on theoretical and observed conductive heat flux as a function of lithospheric age. We chose the 120°C isotherm because it is close to the upper limit for prokaryotic life, and therefore, the isotherm approximates the maximum...
    Resource Type:
    Article
    Full Text:
    –621, doi:10.1038/nature01352. Fisk, M. R., S. J. Giovannoni, and I. H. Thorseth (1998), Alter- ation

  • Oregon women : a bio-bibliography

    Creator:
    Leasher, Evelyn M.
    Resource Type:
    Book
    Full Text:
    , GLADYS H. ANDERSON, THIRZA MAE AOAIR, BETHENIA Mar.3,1894- Jan.12,1889- see Businesswoman Civic leader

  • Oregon women : a bio-bibliography

    Creator:
    Leasher, Evelyn M.
    Abstract:
    This index provides access to infonnation about women in 102 books and journals. The information contained in each entry is only as good as the original and the quality varies considerably. Much of this infonnation has not before been easily accesible in this form. My hope is that this index...
    Resource Type:
    Book
    Full Text:
    H. The Jacksonville Story. Jacksonville, Or., Southern Oregon Historical Society, 1980. --Fagan

  • Characterizing drivers of microbial community structure and function in diverse marine sediments

    Creator:
    Graw, Michael F.
    Abstract:
    Marine sediments are one of the largest habitats for microbial life on earth. These microorganisms play critical roles in biogeochemical cycling both within the subsurface and between the sediment and water columns. However, microbial communities in sediments are highly heterogeneous and the factors defining microbial community structure and metabolic function...
    Resource Type:
    Dissertation
    Full Text:
    K-U, Kubo Y, Bowles MW, Heuer VB, Hong W-L, Hoshino T, Ijiri A, Imachi H, Ito M, Kaneko M, Lever

  • Impact of Igneous Mineralogy on the Composition and Metabolic Function of Microbial Biofilms in a Thermal Suboceanic Crustal Aquifer

    Creator:
    Smith, Amy R.
    Abstract:
    Igneous oceanic crust encompasses ~60% of Earth’s surface and is composed of basalt glass and mafic, ultramafic, and felsic minerals. A vast marine aquifer lies within the crust, exchanging geochemically altered fluids with seawater from the overlying ocean at ridge crests, flanks, seamounts, and outcrops where permeable crust is exposed....
    Resource Type:
    Dissertation