Results 71 to 80 of about 1,662 (207)

Constraining Interseismic Strain Release at the Cascadia Subduction Zone with Geodetic Data

, 2022
Thesis (Ph.D.)--University of Washington, 2022In this dissertation, I study the style and distribution of interseismic strain release along a major convergent plate boundary to better understand how faults accommodate the relative motion between tectonic
Nuyen, Carolyn
core  

Suitability of Ground‐Motion Models for Seismic Hazard Assessments in Puerto Rico and the US Virgin Islands

Earthquake Spectra, Volume 42, Issue 2, May 2026.
We perform linear mixed‐effects analyses with a ground‐motion dataset to evaluate how well ground‐motion models (GMMs) fit active crustal, subduction interface, and subduction intraslab earthquakes in Puerto Rico and the US Virgin Islands. Most of the GMMs reproduce the spatial variation in peak ground motions with earthquake magnitude and rupture ...
Brad T. Aagaard, Morgan P. Moschetti, Kyle B. Withers   +2 more
wiley   +1 more source

Turbidite Event History-Methods and Implications for Holocene Paleoseismicity of the Cascadia Subduction Zone

, 2012
Appendices. -- 170 pages, 64 figures, 13 tablesTurbidite systems along the continental margin of Cascadia Basin from Vancouver Island, Canada, to Cape Mendocino, California, United States, have been investigated with swath bathymetry; newly collected and
Dallimore, Audrey, Vallier, Tracy, Dunhill, Gita, Chris Goldfinger, Karabanov, Eugene, Patton, Jason R., C. Hans Nelson, Eriksson, Andrew T., Ann E. Morey, Gita Dunhill, Enkin, Randolph J., Johnson, Joel E., Julia Gutierrez-Pastor, Morey, Ann E., Eulalia Gracia, Audrey Dallimore, Gràcia, Eulàlia, Jason R. Patton, Tracy Vallier, Randolph J. Enkin, Eugene B. Karabanov, Ericsson, Andrew, Patton, Jason, Joel E. Johnson, Nelson, C. Hans, Gutiérrez-Pastor, Julia, Goldfinger, Chris, Andrew T. Eriksson   +27 more
core   +1 more source

The Role of Slow Slip Events in the Cascadia Subduction Zone Earthquake Cycle

, 2022
Slow slip events (SSEs) detected on the Cascadia Subduction Zone interface at 30–50 km depth imply a release of accumulated strain. However, studies of interseismic deformation in Cascadia typically find coupling on the upper 30 km of the interface ...
John P. Loveless, Juliette P. Saux, Eileen L. Evans, Molitors Bergman, Elias G., Loveless, John P., Elias G. Molitors Bergman, Saux, Juliette P., Evans, Eileen L.   +7 more
core   +2 more sources

2025 U.S. Geological Survey National Seismic Hazard Model for Puerto Rico and the U.S. Virgin Islands: Overview of Model and Hazard Results

Earthquake Spectra, Volume 42, Issue 2, May 2026.
The U.S. Geological Survey recently updated the National Seismic Hazard Model (NSHM) for Puerto Rico and the U.S. Virgin Islands (PRVI). The first version of the PRVI NSHM was released in 2003, and therefore this 2025 update includes over 20 years of new geologic, geophysical, and engineering data, methods, and models.
Allison M. Shumway, Kevin R. Milner, Peter M. Powers, Morgan P. Moschetti, Jason M. Altekruse, Julie A. Herrick, Andrea L. Llenos, Kyle B. Withers, Edward H. Field, Brad T. Aagaard, Richard W. Briggs, Alexandra E. Hatem, Kirstie L. Haynie, Andrew J. Michael, Jessica A. Thompson Jobe, Kishor S. Jaiswal, Brandon S. Clayton, Nicolas Luco, Mark D. Petersen, Sanaz Rezaeian, Thomas L. Pratt, Yuehua Zeng   +21 more
wiley   +1 more source

A 2-D Magnetotelluric Investigation of the Cascadia Subduction Zone [PDF]

, 2016
39 pages. A thesis presented to the Department of Physics and the Clark Honors College of the University of Oregon in partial fulfillment of the requirements for degree of Bachelor of Science, Spring 2016.I have produced four 2-D magnetotelluric ...
Wogan, Nicholas
core  

The 2025 Puerto Rico and Virgin Islands U.S. National Seismic Hazard Model Update: Ground Motion Model Selection and Comparison

Earthquake Spectra, Volume 42, Issue 2, May 2026.
We evaluate, select, and describe the ground‐motion models (GMMs) used in the 2025 update of the U.S. National Seismic Hazard Model (NSHM) for Puerto Rico and the U.S. Virgin Islands (PRVI). We identify the most appropriate models that align with GMM selection criteria for use in the PRVI region to improve the accuracy of seismic hazard assessments ...
Kyle B Withers, Morgan P Moschetti, Brad T Aagaard, Peter M Powers, Jason Altekruse, Sanaz Rezaeian   +5 more
wiley   +1 more source

Bridging the gap between low-frequency and very-low-frequency earthquakes

Earth, Planets and Space, 2020
Slow earthquakes that are observed in the > 1 Hz frequency band are called tectonic tremor or low-frequency earthquakes (LFEs) and those in the 0.01–0.10 Hz band are called very-low-frequency earthquakes (VLFEs).
Koki Masuda, Satoshi Ide, Kazuaki Ohta, Takanori Matsuzawa   +3 more
doaj   +1 more source

Evaluation of Earthquake‐Induced Slope Displacements in Greater Vancouver Based on Probabilistic Framework and Using NBCC 2020 and EqDisp Code Platform

Earthquake Spectra, Volume 42, Issue 2, May 2026.
Engineers frequently use simplified seismic slope displacement procedures to evaluate the performance of earth structures and natural slopes. Current practices typically adopt Newmark‐type and semi‐empirical seismic displacement prediction models (SDPMs) to estimate the seismic slope displacements (D) based on ground motion intensity measures at a ...
Ali Fallah Yeznabad, Karen Assatourians, Hesham El Naggar, Sheri Molnar   +3 more
wiley   +1 more source

Anisotropic Permeability Pathways Controlled by Intraslab Stress Heterogeneity in the Philippine Sea Slab Beneath the Ryukyu Arc

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract Intermediate‐depth intraslab earthquakes in the Philippine Sea Plate occur at depths of 100–200 km beneath the Ryukyu Arc and are widely interpreted as manifestations of slab dehydration; however, the spatial variability in continuity of the volcanic front and the asymmetric distribution of volcanic activity are poorly explained by existing ...
Makoto Otsubo, Ayumu Miyakawa
wiley   +1 more source