Skip to content
University of Maryland LibrariesDigital Repository at the University of Maryland
    • Login
    View Item 
    •   DRUM
    • Theses and Dissertations from UMD
    • UMD Theses and Dissertations
    • View Item
    •   DRUM
    • Theses and Dissertations from UMD
    • UMD Theses and Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Methane Dynamics in Marine Systems

    Thumbnail
    View/Open
    Gelesh_umd_0117N_15921.pdf (3.959Mb)
    No. of downloads: 118

    Date
    2015
    Author
    Gelesh, Lauren
    Advisor
    Lapham, Laura
    DRUM DOI
    https://doi.org/10.13016/M25G82
    Metadata
    Show full item record
    Abstract
    Laboratory and field experiments were performed to investigate methane (CH4) in marine systems. Laboratory experiments explored the impact of aerobic CH4 oxidizing bacteria on the dissolution process of CH4 hydrate. The pure culture, Methylomicrobium album, grew at high pressure (34 atm), but not at low temperature (15°C). Hydrate was formed in media containing culture, but was not stable to perform dissolution experiments. The culture used was found to be unsuitable for hydrate dissolution experiments. Field experiments were performed in the Chesapeake Bay estuary, where CH4 concentrations were measured in bottom water and sediment pore-water. Results showed that bottom water CH4 concentrations increased to 40μM in mid-July, which coincided with decreasing oxygen concentrations and decreasing CH4 concentrations, which coincided with increasing oxygen concentrations in the fall. These observations supported the hypothesis that estuarine emissions of CH4 are being enhanced by seasonal hypoxia and that estuarine CH4 emissions may be currently underestimated.
    URI
    http://hdl.handle.net/1903/16440
    Collections
    • Environmental Science & Technology Theses and Dissertations
    • UMD Theses and Dissertations

    DRUM is brought to you by the University of Maryland Libraries
    University of Maryland, College Park, MD 20742-7011 (301)314-1328.
    Please send us your comments.
    Web Accessibility
     

     

    Browse

    All of DRUMCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister
    Pages
    About DRUMAbout Download Statistics

    DRUM is brought to you by the University of Maryland Libraries
    University of Maryland, College Park, MD 20742-7011 (301)314-1328.
    Please send us your comments.
    Web Accessibility