Results 41 to 50 of about 1,662 (207)

Commentary: The Role of Geodetic Algorithms for Earthquake Early Warning in Cascadia

Geophysical Research Letters, 2021
The ShakeAlert earthquake early warning (EEW) system issues public alerts in California and will soon extend to Oregon and Washington. The Cascadia subduction zone presents significant new challenges and opportunities for EEW.
Jeffrey J. McGuire, Sarah E. Minson, Jessica R. Murray, Benjamin A. Brooks   +3 more
doaj   +1 more source

A Long‐Term View of Episodic Tremor and Slip in Cascadia

Geophysical Research Letters, 2020
Episodic Tremor and Slip, or ETS, is a well‐recognized phenomenon in the Cascadia subduction zone. Constraining the precise location of geodetically measured slip during ETS is important for clarifying the relationship between slip and tremor during ETS,
Noel M. Bartlow
doaj   +1 more source

Near-field tsunami forecasting along the Cascadia subduction zone using rapid GNSS source models

, 2020
Data pertaining to the submitted work Near-field tsunami forecasting along the Cascadia subduction zone using rapid GNSS source model (2020) by Williamson et al.
Kwong, Kevin, Arcas, Diego (8475522), Wei, Yong (8475528), Melgar, Diego, Crowell, Brendan, Melbourne, Timothy (8475525), Williamson, Amy (8475516), Melbourne, Timothy, Kwong, Kevin (8475531), Wei, Yong, Williamson, Amy, Arcas, Diego, Crowell, Brendan (8475519), Melgar, Diego (5304415)   +13 more
core   +1 more source

Inner forearc faults in northern Cascadia do not accommodate elastic strain driven by the megathrust seismic cycle

Seismica
We employ numerical models to explore the connection between subduction zone coupling or megathrust rupture and upper plate faults in the northern Cascadia forearc.
Nicolas Harrichhausen, Kristin D Morell, Christine Regalla   +2 more
doaj   +1 more source

Building a Continental‐Scale Geodetic Network: The Plate Boundary Observatory (PBO)

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract The Plate Boundary Observatory (PBO) transformed the use of geodesy in North America to study crustal deformation and plate boundary processes by establishing a continental‐scale, standardized, open‐access geodetic network. Built and operated by UNAVCO between 2003 and 2018 as part of the National Science Foundation (NSF)‐funded EarthScope ...
Emily E. Zawacki, Michael E. Jackson, Glen S. Mattioli, David J. Mencin, Karl Feaux, Donna J. Charlevoix   +5 more
wiley   +1 more source

Along-strike changes in ETS behavior near the slab edge of Southern Cascadia

Seismica
Episodic tremor and slip (ETS) is well-documented along the entire length of the Cascadia subduction zone. We explore how the occurrence of ETS varies at the southernmost edge of the subduction zone, where geometric complexity and a slab window likely ...
Carolyn Nuyen, David Schmidt
doaj   +1 more source

Development of Liquefaction‐Targeted Design Basis in U.S. Seismic Provisions

Earthquake Spectra, Volume 42, Issue 3, August 2026.
Seismic design criteria for new buildings in the United States have historically focused on life safety performance objectives through minimizing the potential for structural collapse. Development of design criteria to meet this performance objective has evolved over time, leading to the current, risk‐targeted maximum considered earthquake (MCER ...
Andrew J. Makdisi, Steven L. Kramer, Patrick Bassal, Brett W. Maurer, William Perkins, Donald Anderson, C. B. Crouse, Shideh Dashti, David P. Teague   +8 more
wiley   +1 more source

No evidence for an active margin-spanning megasplay fault at the Cascadia Subduction Zone

Seismica
It has been previously proposed that a megasplay fault within the Cascadia accretionary wedge, spanning from offshore Vancouver Island to Oregon, has the potential to slip during a future Cascadia subduction zone earthquake.
Madeleine C Lucas, Anna M Ledeczi, Harold J Tobin, Suzanne M Carbotte, Janet T Watt, Shuoshuo Han, Brian Boston, Danqi Jiang   +7 more
doaj   +1 more source

The Geologic History of the Chehalis Forearc Basin, Washington State, USA

Tectonics, Volume 45, Issue 7, July 2026.
Abstract The Chehalis basin is located between the Cascade arc and the Coast Range in southwest Washington State. It consists of sedimentary and volcanic rocks deposited throughout the Cenozoic and is underlain by the Siletzia terrane, a thick, large igneous province accreted in the Eocene.
R. L. Moe, J. Bershaw, L. M. Staisch, A. R. Streig   +3 more
wiley   +1 more source

Eocene Initiation of the Cascadia Subduction Zone: A Second Example of Plume-Induced Subduction Initiation?

, 2019
Includes supplementary material.The existing paradigm for the major ca. 56-48 Ma subduction zone reorganization in the Pacific Northwest of North America is that: (1) the Siletzia large igneous province erupted offshore to the west of North America ...
Stern, Robert J., Dumitru, T. A.
core   +1 more source