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  • Source Parametrization of Earthquakes along Juan de Fuca Transform Boundaries

    Creator:
    Sapkota, Birat
    Abstract:
    The Juan de Fuca plate system is what remains of Farallon plate subducting under the continental North American plate. Blanco Transform Fault Zone (BTFZ) consists of a network of strike-slip faults discontinued by pull apart depressions which o↵sets the Juan de Fuca Ridge and the Gorda Ridge. Detailed analysis of...
    Resource Type:
    Masters Thesis
    Full Text:
    Boundaries Abstract approved: John L. Nabelek The Juan de Fuca plate system is what remains of Farallon

  • Seismic wave attenuation of the crust and upper mantle in the Himalaya and South-Central Tibetan Plateau

    Creator:
    Monigle, Patrick W.
    Abstract:
    Recent geophysical and geological investigations of the Tibetan plateau have given rise to conflicting models of plateau growth and deformation, where the presence and extent of partial melt in the crust could be a determining factor. Here we investigate the attenuation structure of the crust and upper mantle, as attenuation...
    Resource Type:
    Dissertation
    Full Text:
    : _____________________________________________________________________ John L. Nabelek Recent geophysical and geological investigations of the Tibetan plateau

  • An analysis of seismicity at Mt. Hood, Oregon

    Creator:
    Currie, Michelle
    Abstract:
    Mt. Hood, in north-central Oregon, has experienced 13 M ≥ 3.0 earthquakes since 1980. 1812 earthquakes that range in magnitude from -1.1 to 4.5 have been recorded in the region during the same time frame. This paper analyzes four of the larger earthquakes to provide moment tensor solutions and relocated...
    Resource Type:
    Research Paper
    Full Text:
    : Many, many thanks to John Nábĕlek for guidance and technical assistance without which this paper

  • Investigating the Tibetan crust through automatic S wave detection and travel-time tomography using the Hi-CLIMB seismic array

    Creator:
    Riddle, Evan
    Abstract:
    The Hi-CLIMB broadband seismic experiment (2002-2005) operated 233 stations along an 800 km long north-south line from the Himalayan foreland into the central Tibetan Plateau and in a 350x350 km sub-array within southern Tibet and central and eastern Nepal. Station spacing was approximately 8 km along the line and 50...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ John L. Nabelek The Hi-CLIMB broadband seismic experiment (2002-2005) operated 233

  • Double subduction beneath Hispaniola? an investigation of earthquakes by body wave inversion

    Creator:
    Ludwig, Rainer
    Abstract:
    High seismic activity occurs along the Caribbean and the North American Plate boundary beneath the eastern part of Hispaniola. A large number of intermediate to deep earthquakes are clustered between the Puerto Rico Trench to the north and the Muertos Trench to the south suggesting the possibility of concurrent subduction...
    Resource Type:
    Masters Thesis
    Full Text:
    , and define another slab, possibly originating at the Puerto Rico Trench to the north. One mb=6.l event

  • Crustal heat flow and thermal modeling of the Hikurangi Trough, New Zealand

    Creator:
    Antriasian, Anson M.
    Abstract:
    Measuring surface heat flow at the Hikurangi Trough is key toward characterizing the local thermal regime and the influence of thermally sensitive processes such as fluid flow and slow slip. Marine heat flow data were collected during May– June 2015 in the northern Hikurangi Trough at sites seaward and landward...
    Resource Type:
    Masters Thesis