Rapid shallow megathrust afterslip from the 2021 M8. 2 Chignik, Alaska earthquake revealed by seafloor geodesy

BA Brooks, D Goldberg, J DeSanto, TL Ericksen… - Science …, 2023 - science.org
The shallower portions of subduction zone megathrust faults host Earth's most hazardous
tsunamigenic earthquakes, yet understanding how and when they slip remains elusive …

Evidence of strong upper oceanic crustal hydration outboard the Alaskan and Sumatran subduction zones

T Acquisto, A Bécel, SC Singh… - Journal of Geophysical …, 2022 - Wiley Online Library
The hydration state of subducting oceanic crust has been proposed to influence subduction
zone processes like seismic coupling at the megathrust interface and arc magmatism …

Intercomparison of hydrostatic and nonhydrostatic modeling for tsunami inundation mapping

Y Bai, Y Yamazaki, KF Cheung - Physics of Fluids, 2023 - pubs.aip.org
Nonhydrostatic modeling has emerged as an effective tool for seismological and tsunami
research for over a decade, but its general application in hazard mapping and engineering …

[HTML][HTML] Fast and slow intraplate ruptures during the 19 October 2020 magnitude 7.6 Shumagin earthquake

Y Bai, C Liu, T Lay, KF Cheung, Y Yamazaki - Nature communications, 2023 - nature.com
Strong tsunami excitation from slow rupture of shallow subduction zone faults is recognized
as a key concern for tsunami hazard assessment. Three months after the 22 July 2020 …

Optimizing a Model of Coseismic Rupture for the 22 July 2020 MW 7.8 Simeonof Earthquake by Exploiting Acute Sensitivity of Tsunami Excitation Across the Shelf …

Y Bai, C Liu, T Lay, KF Cheung… - Journal of Geophysical …, 2022 - Wiley Online Library
The Shumagin seismic gap along the Alaska Peninsula experienced a major, MW 7.8,
interplate thrust earthquake on 22 July 2020. Several available finite‐fault inversions …

Megathrust complexity and the up-dip extent of slip during the 2021 Chignik, Alaska Peninsula earthquake

C Liu, Y Bai, T Lay, Y Feng, X Xiong - Tectonophysics, 2023 - Elsevier
The up-dip extent of slip during large megathrust earthquakes is important for both tsunami
excitation and subsequent tsunami earthquake potential, but it is unclear whether frictional …

A shallow slow slip event in 2018 in the Semidi segment of the Alaska subduction zone detected by machine learning

B He, XZ Wei, M Wei, Y Shen, M Alvarez… - Earth and Planetary …, 2023 - Elsevier
Slow slip events (SSEs) have been discovered at shallow depth near the trench in some
subduction zones and have been linked to the triggering of large earthquakes and the …

Detection and Characterization of Seismic and Acoustic Signals at Pavlof Volcano, Alaska, Using Deep Learning

D Tan, D Fee, A Witsil, T Girona… - Journal of …, 2024 - Wiley Online Library
Volcanic tremor is a semi‐continuous seismic and/or acoustic signal that occurs at time
scales ranging from seconds to years, with variable amplitudes and spectral features …

Comparison of methods for coupled earthquake and tsunami modelling

LS Abrahams, L Krenz, EM Dunham… - Geophysical Journal …, 2023 - academic.oup.com
Tsunami generation by offshore earthquakes is a problem of scientific interest and practical
relevance, and one that requires numerical modelling for data interpretation and hazard …

Interchangeable Use of GNSS and Seismic Data for Rapid Earthquake Characterization: 2021 Chignik, Alaska, Earthquake

RM Parameswaran, R Grapenthin… - … Society of America, 2023 - pubs.geoscienceworld.org
Earthquake magnitude estimation using peak ground velocities (PGVs) derived from Global
Navigation Satellite Systems (GNSS) data has shown promise for rapid characterization of …