Results 21 to 30 of about 389 (172)
Central Cascadia subduction zone creep
Geochemistry, Geophysics, Geosystems, 2014 Central Cascadia between 43°N and 46°N has reduced interseismic uplift observed in geodetic data and coseismic subsidence seen in multiple thrust earthquakes, suggesting elevated persistent fault creep in this section of the subduction zone. We estimate subduction thrust “decade-scale” locking and crustal block rotations from three-component continuous
Schmalzle, Gina M. +2 more
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An exponential build-up in seismic energy suggests a months-long nucleation of slow slip in Cascadia
Nature Communications, 2020 Using machine learning algorithms, the authors here identify slow slip precursors in the Cascadia subduction zone to last for months - which in turn argues for a much better predictability of slow slip rupture.
Claudia Hulbert +3 more
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Journal of Environmental Geography, 2020 The Cascadia Trench is stretching along the convergent plate boundaries of Pacific Plate, North America Plate and Juan De Fuca Plate. It is an important geomorphological structural feature in the north-east Pacific Ocean.
Lemenkova Polina
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Rethinking turbidite paleoseismology along the Cascadia subduction zone [PDF]
Geology, 2014 A stratigraphic synthesis of dozens of deep-sea cores, most of them overlooked in recent decades, provides new insights into deepsea turbidites as guides to earthquake and tsunami hazards along the Cascadia subduction zone, which extends 1100 km along the Pacific coast of North America.
Brian F. Atwater +4 more
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Nature Communications, 2018 Variations in seismicity are observed at subduction zones, but the oceanic sides remain poorly resolved. Here, the author presents tomographic results of the Cascadia subduction system demonstrating that there are significant variations of the oceanic ...
Haiying Gao
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Very Low Frequency Earthquakes in Between the Seismogenic and Tremor Zones in Cascadia?
AGU Advances, 2022 Megathrust earthquakes and their associated tsunamis cause some of the worst natural disasters. In addition to earthquakes, a wide range of slip behaviors are present at subduction zones, including slow earthquakes that span multiple orders of spatial ...
Wenyuan Fan +6 more
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Geophysical Research Letters, 2021 Within the fore‐arc of the Cascadia Subduction Zone, there are significant along‐strike differences in the orientation of splay faults, sediment consolidation, and fault roughness.
Khurram S. Aslam +2 more
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Relative Tsunami Hazard From Segments of Cascadia Subduction Zone For Mw 7.5–9.2 Earthquakes
Geophysical Research Letters, 2021 Tsunamis from earthquakes of various magnitudes have affected Cascadia in the past. Simulations of Mw 7.5–9.2 earthquake constrained by earthquake rupture physics and geodetic locking models show that Mw ≥ 8.5 events initiating in the middle segments of ...
Amir Salaree +3 more
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Strain accumulation along the Cascadia Subduction Zone
Geophysical Research Letters, 2000 We combine triangulation, trilateration, and GPS observations to determine horizontal strain rates along the Cascadia subduction zone from Cape Mendocino to the Strait of Juan de Fuca. Shear‐strain rates are significantly greater than zero (95% confidence) in all forearc regions (26–167 nanoradians/yr), and are not significant in the arc and backarc ...
Mark H. Murray, Michael Lisowski
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Evidence for large earthquakes at the Cascadia Subduction Zone [PDF]
Reviews of Geophysics, 1997 Large, historically unprecedented earthquakes at the Cascadia subduction zone in western North America have left signs of sudden land level change, tsunamis, and strong shaking in coastal sediments. The coastal geological evidence suggests that many of the earthquakes occurred at the boundary between the overriding North American plate and the ...
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