Results 91 to 100 of about 2,530 (204)

The seismic cycle in the area of the 2011 M_w9.0 Tohoku-Oki earthquake [PDF]

, 2014
We model seismic and aseismic slip on the Japan megathrust in the area of the M_w9.0, 2011 Tohoku-Oki earthquake based on daily time series from 400 GPS stations of the GEONET network and campaign measurements of six sea floor displacements.
Avouac, J. P., Perfettini, H.
core  

Application of Singular Spectrum Analysis (SSA) for Delineating Geomagnetic and Lithospheric Signatures Associated With M7.6 Japan Earthquake

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract In this paper, Singular Spectral Analysis (SSA) is applied to the geomagnetic field to delineate signatures from different sources, such as geomagnetic variability and lithospheric processes. We performed SSA on the Y component of the Swarm satellite magnetic field By during the period from September 2023 to January 2024. Eigen values obtained
Amrita Yadav, Jayashree Bulusu, Essam Ghamry, Dedalo Marchetti, A. P. Dimri   +4 more
wiley   +1 more source

Poroelastic Bulk Controls on Shear Localization in Fault Gouge During Earthquake Rupture: Insights From a Hybrid Numerical Framework

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 3, March 2026.
Abstract Seismic ruptures that extend over kilometers along faults originate in shear zones only millimeters thick. We present a hybrid numerical framework coupling the spectral boundary integral method (SBIM) for the poroelastic bulk with a staggered‐grid finite difference method (FDM) for the fault gouge.
Yu‐Han Wang, Elías Rafn Heimisson
wiley   +1 more source

Short term afterslip in the 1994 Sanriku‐Haruka‐Oki Earthquake

Geophysical Research Letters, 1997
The Sanriku‐Haruka‐Oki earthquake, that occurred on December 28, 1994 at the Japan Trench as a typical interplate thrust event, was followed by year‐long afterslip as large as the slip in the high‐speed rupture [Heki et al., 1997]. Here we report on the transition between these, inferred from crustal movements during the five days interval before and ...
Kosuke Heki, Yoshiaki Tamura
openaire   +1 more source

Stress Barriers and Their Impact on Rupture Propagation

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract Earthquake ruptures often exhibit complex behaviors, including abrupt arrest followed by delayed re‐nucleation. While on‐fault stress heterogeneity is a recognized contributing factor, as it can arrest or slow down rupture propagation, its interaction with propagating ruptures remains complex and not fully understood. Here, we study frictional
F. Paglialunga, J. P. Ampuero, F. Passelègue   +2 more
wiley   +1 more source

Slip history and dynamic implications of the 1999 Chi-Chi, Taiwan, earthquake [PDF]

, 2003
We investigate the rupture process of the 1999 Chi-Chi, Taiwan, earthquake using extensive near-source observations, including three-component velocity waveforms at 36 strong motion stations and 119 GPS measurements.
Helmberger, Donald V., Ji, Chen, Ma, Kuo-Fong, Wald, David J.   +3 more
core   +1 more source

Rheological and tectonic implications of eastern Tibet: Insights from early aftershock sequences driven by afterslip following three 2021–2022 moderate-large events

International Journal of Applied Earth Observations and Geoinformation
Early aftershock sequences and afterslip provide key insights into crust rheology and the triggering mechanisms of seismicity sequences. Three recent moderate-large strike-slip earthquakes in eastern Tibet, including the 2021 Yangbi Mw 6.1, the 2021 ...
Xiaoge Liu, Wenbin Xu, William B. Frank, Yijian Zhou, Guoqiang Zhao, Lihua Fang, Hui Huang, Lijia He, Weijun Gan   +8 more
doaj   +1 more source

Probing time-dependent afterslip and viscoelastic relaxation following the 2015 Mw7.8 Gorkha earthquake based on the 3-D finite-element model

Earth, Planets and Space, 2020
We analyzed daily displacement time series from 34 continuous GPS stations in Nepal and 5 continuous GPS stations in South Tibet, China, and extracted the first 4.8 years of postseismic motion after the 2015 Mw7.8 Gorkha earthquake.
Lina Su, Fuqiang Shi, Weijun Gan, Xiaoning Su, Junyi Yan   +4 more
doaj   +1 more source

Seismic Velocity Variations, Ground Deformation and the Role of Fluids During a Low‐Energy Seismic Swarm

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract On March 9th $9\mathrm{th}$, 2023, three small earthquakes (3.8≤Mw≤4.5) $(3.8\le {M}_{w}\le 4.5)$ occurred near Umbertide (Central Italy), within 4 hours. Analyzing seismic ambient noise in the frequency band 0.1–1 Hz from six seismometers within 20 km of the Mw 4.5, we detect a significant drop in seismic velocity at the time of occurrence of
Eugenio Mandler, Lucia Zaccarelli, Massimo Nespoli, Maria Elina Belardinelli, Francesco Pintori, Enrico Serpelloni, Adriano Gualandi, Lauro Chiaraluce   +7 more
wiley   +1 more source

The 2014 M_w 6.1 South Napa Earthquake: A Unilateral Rupture with Shallow Asperity and Rapid Afterslip [PDF]

, 2015
The Mw 6.1 South Napa earthquake occurred near Napa, California, on 24 August 2014 at 10:20:44.03 (UTC) and was the largest inland earthquake in northern California since the 1989 Mw 6.9 Loma Prieta earthquake. The first report of the earthquake from the
Barbot, Sylvain, Fu, Yuning, Graves, Robert, Helmberger, Don, Hudnut, Kenneth, Lienkaemper, James J., Wang, Teng, Wei, Shengji   +7 more
core   +1 more source