Results 31 to 40 of about 1,662 (207)
Coastal subsidence in Oregon, USA, during the Giant Cascadia earthquake of AD 1700 [PDF]
, 2011 Quantitative estimates of land-level change during the giant AD 1700 Cascadia earthquake along the Oregon coast are inferred from relative sea-level changes reconstructed from fossil foraminiferal assemblages preserved within the stratigraphic record.
Nelson, A.R. +9 more
core +1 more source
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
openaire +1 more source
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
doaj +1 more source
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
doaj +1 more source
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 ...
openaire +1 more source
Methane Plume Emissions Associated With Puget Sound Faults in the Cascadia Forearc
Geochemistry, 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
IODP Expedition 328: Early Results of Cascadia Subduction Zone ACORK Observatory [PDF]
Scientific 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
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
openaire +1 more source
Bidirectional Loading of the Subduction Interface: Evidence From the Kinematics of Slow Slip Events
Geochemistry, 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
Rotation and plate locking at the Southern Cascadia Subduction Zone [PDF]
Geophysical 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