Results 21 to 30 of about 1,662 (207)

Isolating non-subduction-driven tectonic processes in Cascadia

open access: yesGeoscience Letters, 2021
Several tectonic processes combine to produce the crustal deformation observed across the Cascadia margin: (1) Cascadia subduction, (2) the northward propagation of the Mendocino Triple Junction (MTJ), (3) the translation of the Sierra Nevada–Great ...
K. A. McKenzie, K. P. Furlong
doaj   +1 more source

Crustal anisotropy in a subduction zone forearc : Northern Cascadia [PDF]

open access: yesJournal of Geophysical Research: Solid Earth, 2014
S-wave splitting analyses using high signal-to-noise ratio low frequency earthquake (LFE) templates at 3-component stations across southern Vancouver Island (SVI) and northern Washington indicate the presence of a heterogeneous distribution of crustal anisotropy in the North American plate.
G. Matharu   +3 more
openaire   +2 more sources

The Cascadia Initiative: A Sea Change In Seismological Studies of Subduction Zones [PDF]

open access: yesOceanography, 2014
Increasing public awareness that the Cascadia subduction zone in the Pacific Northwest is capable of great earthquakes (magnitude 9 and greater) motivates the Cascadia Initiative, an ambitious onshore/offshore seismic and geodetic experiment that takes ...
Douglas R. Toomey   +20 more
doaj   +1 more source

Probabilistic Tsunami Hazard Analysis for Vancouver Island Coast Using Stochastic Rupture Models for the Cascadia Subduction Earthquakes

open access: yesGeoHazards, 2023
Tsunami hazard analysis is an essential step for designing buildings and infrastructure and for safeguarding people and assets in coastal areas. Coastal communities on Vancouver Island are under threat from the Cascadia megathrust earthquakes and ...
Katsuichiro Goda
doaj   +1 more source

Complex anisotropy beneath the Peruvian flat slab from frequency-dependent, multiple-phase shear wave splitting analysis [PDF]

open access: yes, 2013
Flat or shallow subduction is a relatively widespread global occurrence, but the dynamics remain poorly understood. In particular, the interaction between flat slabs and the surrounding mantle flow has yet to be studied in detail.
Long, Maureen D., Eakin, Caroline M.
core   +1 more source

Properties of the Subduction System in Mexico [PDF]

open access: yes, 2011
This thesis presents seismic imaging results of the structure of the Mexican subduction zone using receiver function (RF) based on teleseismic P-to-S converted waves, in order to gain insight into the physical and chemical factors associated with ...
Kim, YoungHee
core   +1 more source

Fault zone heterogeneities explain depth-dependent pattern and evolution of slow earthquakes in Cascadia

open access: yesNature Communications, 2021
Here, the authors combine the geological and seismological constraints of the Cascadia Subduction Zone and develop a 3D rate and state friction model.
Yingdi Luo, Zhen Liu
doaj   +1 more source

Recent Crustal Deformation in West-Central South America [PDF]

open access: yes, 2003
I use interferometric synthetic aperture radar (InSAR) to create maps of crustal deformation along the coast and within the volcanic arc of central South America. I image deformation associated with six subduction zone earthquakes, four volcanic centers,
Pritchard, Matthew Earl
core   +1 more source

An exponential build-up in seismic energy suggests a months-long nucleation of slow slip in Cascadia

open access: yesNature 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
doaj   +1 more source

Toward an Integrative Geological and Geophysical View of Cascadia Subduction Zone Earthquakes [PDF]

open access: yesAnnual Review of Earth and Planetary Sciences, 2021
The Cascadia subduction zone (CSZ) is an exceptional geologic environment for recording evidence of land-level changes, tsunamis, and ground motion that reveals at least 19 great megathrust earthquakes over the past 10 kyr. Such earthquakes are among the most impactful natural hazards on Earth, transcend national boundaries, and can have global impact.
Walton, MAL   +19 more
openaire   +3 more sources

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