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Simulation of Tsunamis from Great Earthquakes on the Cascadia Subduction Zone
Science, 1990Large earthquakes occur episodically in the Cascadia subduction zone. A numerical model has been used to simulate and assess the hazards of a tsunami generated by a hypothetical earthquake of magnitude 8.5 associated with rupture of the northern sections of the subduction zone.
M K, Ng, P H, Leblond, T S, Murty
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Late Holocene Tectonics and Paleoseismicity, Southern Cascadia Subduction Zone
Science, 1992Holocene deformation indicative of large subduction-zone earthquakes has occurred on two large thrust fault systems in the Humboldt Bay region of northern California. Displaced stratigraphic markers record three offsets of 5 to 7 meters each on the Little Salmon fault during the past 1700 years.
Clarke, Samuel H., Jr., Carver, Gary A.
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Great earthquakes of variable magnitude at the Cascadia subduction zone
Quaternary Research, 2006AbstractComparison of histories of great earthquakes and accompanying tsunamis at eight coastal sites suggests plate-boundary ruptures of varying length, implying great earthquakes of variable magnitude at the Cascadia subduction zone. Inference of rupture length relies on degree of overlap on radiocarbon age ranges for earthquakes and tsunamis, and ...
Alan R. Nelson +2 more
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Radiocarbon test of earthquake magnitude at the Cascadia subduction zone
Nature, 1991THE Cascadia subduction zone, which extends along the northern Pacific coast of North America, might produce earthquakes of magnitude 8 or 9 ('great' earthquakes) even though it has not done so during the past 200 years of European observation1–7. Much of the evidence for past Cascadia earthquakes comes from former meadows and forests that became tidal
Brian F. Atwater +2 more
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Journal of Geophysical Research: Solid Earth, 1992
The Cascadia subduction zone is a young subduction zone with associated volcanic activity but with no history of large thrust earthquakes associated with it as is characteristic of other subduction zones. This has led to questions about the potential for great earthquakes associated with this subduction.
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The Cascadia subduction zone is a young subduction zone with associated volcanic activity but with no history of large thrust earthquakes associated with it as is characteristic of other subduction zones. This has led to questions about the potential for great earthquakes associated with this subduction.
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Seattle, Portland, and Vancouver: Cascadia subduction zone
2015SCIENTISTS RECOGNIZE THE THREAT I had been working on earthquake hazards for seven years when I moved from Ohio to western Oregon in 1977. There was a sense of relief that I could study earthquakes while living in Ohio or Oregon and yet not worry about being in the path of an earthquake myself.
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A continuum of stress, strength and slip in the Cascadia subduction zone
Nature Geoscience, 2011Movement of the down-going oceanic plate in subduction zones is accommodated by earthquakes, slow slip and free slip with increasing depth. Analysis of accompanying tremor reveals a continuum of slow-slip events in the Cascadia subduction zone, which suggests that deep free slip of the subducted plate may cause stress to be gradually transferred up the
Aaron G. Wech, Kenneth C. Creager
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Upper mantle structure of the northern Cascadia subduction zone
Canadian Journal of Earth Sciences, 1995Previous knowledge of the structure of the Cascadia subduction zone north of the Canada–United States border has been derived from a variety of geophysical studies that accurately delineated the downgoing Juan de Fuca plate from the offshore deformation front to depths of ~50–60 km beneath south-central Vancouver Island and the Georgia Strait.
M. G. Bostock, J. C. Vandecar
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Episodic Tremor and Slip on the Cascadia Subduction Zone: The Chatter of Silent Slip
Science, 2003We found that repeated slow slip events observed on the deeper interface of the northern Cascadia subduction zone, which were at first thought to be silent, have unique nonearthquake seismic signatures. Tremorlike seismic signals were found to correlate temporally and spatially with slip events identified from crustal motion data spanning the past 6 ...
Garry, Rogers, Herb, Dragert
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Integrated geophysical modelling of the northern Cascadia subduction zone
2011The northern Cascadia subduction zone involves convergence of the Explorer Plate and northern part of the Juan de Fuca Plate with the North American Plate along a margin lying west of Vancouver Island, Canada. A wide accretionary complex which underlies the continental slope and shelf has been formed. Two allochthonous terranes, the Crescent Terrane of
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