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    An analysis of volcanic ash plume movement and dispersion within the North Pacific

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    Papp_K_2002.pdf
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    Author
    Papp, Kenneth R.
    Chair
    Dean, Kenneson
    Committee
    Sharpton, Virgil
    Dehn, Jonathan
    Schneider, David
    Metadata
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    URI
    http://hdl.handle.net/11122/6307
    Abstract
    This study analyzes the movement and dispersion of airborne volcanic ash within the North Pacific region by simulating volcanic plumes from 22 volcanoes using the PUFF ash-tracking model. The model is run hourly using archived wind field data between 1994-2001 and the results are analyzed with statistical and GIS software. Maps and statistics are generated revealing the distribution of simulated airborned ash particles at 6 and 24 hr intervals, constraining the likely direcion and distance a volcanic ash cloud may propagate from a given volcano. The results indicate wind field charactistics during and after an eruption may have a larger effect on volcanic cloud growth rate than the eruption dynamics. Wind field and statistical analyses show North Pacific ash cloud distribution is strongly affected by the intensity, migration, and location of the Polar jet stream and associated cyclones. Although often used operationally during an eruption crisis, the PUFF model can also be used as an effective research tool and provide airborne ash hazard mitigation for towns, airports, and air traffic within the North Pacific region.
    Description
    Thesis (M.S.) University of Alaska Fairbanks, 2002
    Date
    2002-08
    Type
    Thesis
    Collections
    Geosciences

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