Body Waveform Modeling Studies of Earthquakes Occurring in the Prince William Sound Region, Alaska in the Ten Years Following the 1964 Great Alaskan Earthquake
We present initial results of body waveform modeling studies of magnitude 5.2 to 6.5 earthquakes occurring in the Prince William Sound region for the 10 years following the March 28, 1964 Great Alaskan earthquake. Recent seismic refraction and reflection profiles (TACT) provide high quality velocity models for use in this analysis. Five earthquakes studied occurred at depths < 10 km. These events have thrust or reverse-oblique mechanisms with east-west to northeast-southwest trending P-axes, reflecting complex deformation of the Prince William terrane above the megathrust. Four other earthquakes studied occurred below the megathrust, either near the base of the subducting plate. These deeper events show oblique-normal faulting, all with a common north-south oriented nodal plane.
Jack Pelton. "Body Waveform Modeling Studies of Earthquakes Occurring in the Prince William Sound Region, Alaska in the Ten Years Following the 1964 Great Alaskan Earthquake" Eos, Transactions of the American Geophysical Union (1995 Fall Meeting), American Geophysical Union. Washington, DC. Jan. 1995.
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