Seismic potential of the Cascadia subduction zone
نویسندگان
چکیده
منابع مشابه
Earthquake hazards on the cascadia subduction zone.
Large subduction earthquakes on the Cascadia subduction zone pose a potential seismic hazard. Very young oceanic lithosphere (10 million years old) is being subducted beneath North America at a rate of approximately 4 centimeters per year. The Cascadia subduction zone shares many characteristics with subduction zones in southern Chile, southwestern Japan, and Colombia, where comparably young oc...
متن کاملProbabilistic Seismic and Tsunami Hazard Analysis Conditioned on a Megathrust Rupture of the Cascadia Subduction Zone
This paper presents a methodology for probabilistic hazard assessment for the multihazard seismic and tsunami phenomena [probabilistic seismic and tsunami hazard analysis (PSTHA)]. For this work, a full-rupture event along the Cascadia subduction zone is considered and the methodology is applied to a study area of Seaside, Oregon, which is located on the US Pacific Northwest coast. In this work...
متن کاملRotation and plate locking at the southern Cascadia subduction zone
Global Positioning System vectors and surface tilt rates are inverted simultaneously for the rotation of western Oregon and plate locking on the southern Cascadia subduction thrust fault. Plate locking appears to be largely offshore, consistent with earlier studies, and is sufficient to allow occasional great earthquakes inferred from geology. Clockwise rotation of most of Oregon about a nearby...
متن کاملHydrodynamic Simulations of Historic Tsunamis from the Cascadia Subduction Zone
INTRODUCTION We use new geological and hydrodynamic models to simulate the sea floor deformation and tsunami runup and inundation in Cannon Beach, Oregon (Fig. 1) produced by Cascadia subduction zone (CSZ) earthquakes. We then compare the simulated inundation with inland extent of buried sand sheets inferred to be of tsunami origin. The CSZ exhibits similarities to other subduction zones around...
متن کاملPeriodic slow earthquakes from the Cascadia subduction zone.
Continuous geodetic measurements from convergent margins have shown that deep transient creep events can release large amounts of strain energy without detectable seismic shaking, and they are thus known as slow or silent earthquakes. Because subduction zones generate the largest earthquakes, seismic hazard assessment relies on understanding the degree to which slow earthquakes reduce the energ...
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ژورنال
عنوان ژورنال: Nature
سال: 1988
ISSN: 0028-0836,1476-4687
DOI: 10.1038/332017a0