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    Characterization of Ice Mélange and its Implications to Terminus Stability at Helheim Glacier, Southeast Greenland

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    Foga_ku_0099M_14684_DATA_1.pdf (3.677Mb)
    Issue Date
    2016-05-31
    Author
    Foga, Steven
    Publisher
    University of Kansas
    Format
    44 pages
    Type
    Thesis
    Degree Level
    M.S.
    Discipline
    Geography
    Rights
    Copyright held by the author.
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    Abstract
    Ice mélange, a conglomeration of icebergs and sea ice, persists in front of some marine-terminating glaciers. Depending upon local fjord geometry and other environmental conditions, an ice mélange can sometimes compact and jam. Here, the impact of the ice mélange on iceberg calving is assessed at a fast-moving glacier with a unique flow regime – Helheim Glacier, southeast Greenland (HG). Satellite remote sensing is used to quantify the ice mélange and the glacier terminus position, and additional ancillary data – wind speed, moorings, sea surface temperature (SST) and bed topography – are used to assess potential controls on iceberg calving. Iceberg jams were measured on a 2 to 35-day interval, but often did not correlate with the rate of calving. Isolated calving events were more likely during a jam, but most jams were in winter, when calving is most infrequent. At HG, SST and seasonality are the stronger drivers of iceberg calving.
    URI
    http://hdl.handle.net/1808/21829
    Collections
    • Geography & Atmospheric Science Dissertations and Theses [184]
    • Theses [3825]

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    785-864-8983

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    Lawrence, KS 66045
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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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