Results 21 to 30 of about 1,199,820 (162)

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

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

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

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

Three-dimensional variations of the slab geometry correlate with earthquake distributions at the Cascadia subduction system

open access: yesNature 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

Central Cascadia Subduction Zone Creep [PDF]

open access: yes, 2014
Central Cascadia between 43ºN and 46ºN 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.
Schmalzle, Gina M.   +2 more
core   +1 more source

Very Low Frequency Earthquakes in Between the Seismogenic and Tremor Zones in Cascadia?

open access: yesAGU 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

Coastal subsidence in Oregon, USA, during the Giant Cascadia earthquake of AD 1700 [PDF]

open access: yes, 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

Relative Tsunami Hazard From Segments of Cascadia Subduction Zone For Mw 7.5–9.2 Earthquakes

open access: yesGeophysical 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
doaj   +1 more source

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