Results 41 to 50 of about 5,667 (223)

Evidence for large earthquakes at the Cascadia Subduction Zone [PDF]

open access: yesReviews 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 ...
openaire   +1 more source

IODP Expedition 328: Early Results of Cascadia Subduction Zone ACORK Observatory [PDF]

open access: yesScientific Drilling, 2012
Integrated Ocean Drilling Program (IODP) Expedition 328 was devoted to the installation of an "Advanced CORK" (Circulation Obviation Retrofit Kit) in the Cascadia subduction zone accretionary prism to observe the physical state and properties of the ...
E. Davis   +2 more
doaj   +3 more sources

Methane Plume Emissions Associated With Puget Sound Faults in the Cascadia Forearc

open access: yesGeochemistry, Geophysics, Geosystems, 2022
Methane gas plumes have been discovered to issue from the seafloor in the Puget Sound estuary. These gas emission sites are co‐located over traces of three major fault zones that fracture the entire forearc crust of the Cascadia Subduction Zone ...
H. Paul Johnson   +8 more
doaj   +1 more source

Deep-water turbidites as Holocene earthquake proxies: the Cascadia subduction zone and Northern San Andreas Fault systems [PDF]

open access: yes, 2003
New stratigraphic evidence from the Cascadia margin demonstrates that 13 earthquakes ruptured the margin from Vancouver Island to at least the California border following the catastrophic eruption of Mount Mazama.
Goldfinger, Chris   +2 more
core   +3 more sources

Bidirectional Loading of the Subduction Interface: Evidence From the Kinematics of Slow Slip Events

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Subduction zones host some of Earth's most damaging natural hazards, including megathrust earthquakes and earthquake‐induced tsunamis. A major control on the initiation and rupture characteristics of subduction megathrust earthquakes is how the coupled ...
K. A. McKenzie   +2 more
doaj   +1 more source

Commentary: The Role of Geodetic Algorithms for Earthquake Early Warning in Cascadia

open access: yesGeophysical Research Letters, 2021
The ShakeAlert earthquake early warning (EEW) system issues public alerts in California and will soon extend to Oregon and Washington. The Cascadia subduction zone presents significant new challenges and opportunities for EEW.
Jeffrey J. McGuire   +3 more
doaj   +1 more source

Rotation and plate locking at the Southern Cascadia Subduction Zone [PDF]

open access: yesGeophysical Research Letters, 2000
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 ...
Robert McCaffrey   +6 more
openaire   +1 more source

Data report: Seismic structure beneath the North Cascadia drilling transect of IODP Expedition 311 [PDF]

open access: yes, 2006
Between 1999 and 2004, new seismic data became available for the study of gas hydrates on the northern Cascadia margin. These data consist of multi- and single-channel data with two- and partly three-dimensional subsurface coverage and were acquired and ...
Hyndman, R. D.   +3 more
core   +1 more source

A Long‐Term View of Episodic Tremor and Slip in Cascadia

open access: yesGeophysical Research Letters, 2020
Episodic Tremor and Slip, or ETS, is a well‐recognized phenomenon in the Cascadia subduction zone. Constraining the precise location of geodetically measured slip during ETS is important for clarifying the relationship between slip and tremor during ETS,
Noel M. Bartlow
doaj   +1 more source

GPS constraints on 34 slow slip events within the Cascadia subduction zone, 1997–2005 [PDF]

open access: yes, 2008
Refinements to GPS analyses in which we factor geodetic time series to better estimate both reference frames and transient deformation resolve 34 slow slip events located throughout the Cascadia subduction zone from 1997 through 2005. Timing of transient
Blewitt   +38 more
core   +2 more sources

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