Results 21 to 30 of about 5,667 (223)

Quaternary rupture of a crustal fault beneath Victoria, British Columbia, Canada [PDF]

, 2017
The seismic potential of crustal faults within the forearc of the northern Cascadia subduction zone in British Columbia has remained elusive, despite the recognition of recent seismic activity on nearby fault systems within the Juan de Fuca Strait.
Amos, Colin, Leonard, Lucinda J., Levson, Vic, Morell, Kristin D., Regalla, Christine   +4 more
core   +1 more source

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

Nature 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

Rising methane gas bubbles form massive hydrate layers at the seafloor [PDF]

, 2004
Extensive methane hydrate layers are formed in the near-surface sediments of the Cascadia margin. An undissociated section of such a layer was recovered at the base of a gravity core (i.e.
Haeckel, Matthias, Rickert, Dirk, Suess, Erwin, Wallmann, Klaus   +3 more
core   +1 more source

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., McCaffrey, Robert, Creager, Kenneth C.   +2 more
openaire   +3 more sources

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, Bertrand Rouet-Leduc, Romain Jolivet, Paul A. Johnson   +3 more
doaj   +1 more source

Juan de Fuca subduction zone from a mixture of tomography and waveform modeling [PDF]

, 2012
Seismic tomography images of the upper mantle structures beneath the Pacific Northwestern United States display a maze of high-velocity anomalies, many of which produce distorted waveforms evident in the USArray observations indicative of the Juan de ...
Chu, Risheng, Helmberger, Don V., Schmandt, Brandon   +2 more
core   +1 more source

Applying Automatic Mapping Processing By GMT to Bathymetric and Geophysical Data: Cascadia Subduction Zone, Pacific Ocean

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
doaj   +1 more source

Seismicity relocation and fault structure near the Leech River Fault Zone, southern Vancouver Island [PDF]

, 2018
Relatively low rates of seismicity and fault loading have made it challenging to correlate microseismicity to mapped surface faults on the forearc of southern Vancouver Island.
Li, Ge, Liu, Yajing, Morell, Kristin, Regalla, Christine   +3 more
core   +1 more source

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

Annual 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, Staisch, LM, Dura, T, Pearl, JK, Sherrod, B, Gomberg, J, Engelhart, SE, Trehu, A, Watt, J, Perkins, J, Witter, RC, Bartlow, N, Goldfinger, C, Kelsey, HM, Morey, AE, Sahakian, VJ, Tobin, H, Wang, K, Wells, R, Wirth, E   +19 more
openaire   +3 more sources

Persistent elastic behavior above a megathrust rupture patch: Nias island, West Sumatra [PDF]

, 2008
We quantify fore-arc deformation using fossil reefs to test the assumption commonly made in seismic cycle models that anelastic deformation of the fore arc is negligible.
Adams, Agnew, Atwater, Bambang Suwargadi, Barber, Berryman, Bird, Briggs, Chappell, Cheng, Chlieh, Clark, Clarke, Curray, Danny Natawidjaja, DeMets, Dewey, Diament, Dickinson, Djamal, Dudi Prayudi, Edwards, Edwards, Edwards, Egbert, Fairbanks, Farr, Fitch, Geyh, Hamilton, Horton, Hsu, Imam Suprihanto, John Galetzka, Karig, Kelsey, Kelsey, Kelsey, Kerry Sieh, Konca, Kopp, Kopp, Kopp, Ladage, Matsuda, McNeill, Melnick, Meltzner, Milsom, Mitrovica, Moore, Moore, Moore, Natawidjaja, Nelson, Newcomb, Nugraha Sastra, Ota, Peltier, Plafker, Plafker, Plafker, Plafker, Plafker, Prawirodirdjo, Richard W. Briggs, Samuel, Samuel, Satake, Savage, Savage, Schlüter, Scholz, Scoffin, Scoffin, Scoffin, Shimazaki, Sibuet, Sieh, Sieh, Sieh, Sladen, Smith, Smithers, Stein, Stuiver, Stuiver, Stuiver, Taylor, Taylor, Taylor, Taylor, Thatcher, Thomas G. Farr, Tjia, Verstappen, Vita-Finzi, Vita-Finzi, Wang, Whittaker, William H. Amidon, Yamano, Zachariasen, Zachariasen   +103 more
core   +1 more source