Coseismic subsidence in the 1700 great Cascadia earthquake: Coastal estimates versus elastic dislocation models

  title={Coseismic subsidence in the 1700 great Cascadia earthquake: Coastal estimates versus elastic dislocation models},
  author={L. J. Leonard and R. Hyndman and S. Mazzotti},
  journal={Geological Society of America Bulletin},
  • L. J. Leonard, R. Hyndman, S. Mazzotti
  • Published 2004
  • Geology
  • Geological Society of America Bulletin
  • Seismic hazard assessments for a Cascadia subduction zone earthquake are largely based on the rupture area predictions of dislocation models constrained by geodetic and geothermal data; this paper tests the consistency of the models for the 1700 great Cascadia earthquake with compiled coastal coseismic subsidence as estimated from paleoelevation studies. Coastal estimates have large uncertainties but show a consistent pattern. Greatest coseismic subsidence (∼1–2 m) occurred in northern Oregon… CONTINUE READING
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