Results 41 to 50 of about 319 (157)

Dual Role of a Subducted Seamount in Megathrust Rupture Initiation and Rupture Barrier

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Using high‐resolution 3D tomography and a relocated 2010–2022 earthquake catalog, we identify a seamount at 20–25 km depth beneath the Mompiche–Cojimíes region in the coastal forearc of Ecuador. This provides a rare, well‐resolved example of seamount preservation at these depths. The seamount coincides with a low interseismic‐coupling corridor
G. Ponce, A. Meltzer, A. Wickham‐Piotrowski, S. Beck, M. Ruiz, S. Hernández, M. Segovia   +6 more
wiley   +1 more source

Large‐Scale Deformation, Strain Characteristics, and Locking Distribution of the Qilian‐Haiyuan Fault System

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 3, March 2026.
Abstract The Qilian‐Haiyuan fault system is the main tectonic boundary of the northeastern Tibetan Plateau, controlling the regional tectonic deformation and seismic activity. Extensive Sentinel‐1 SAR data (2014–2021) are used to map the regional tectonic deformation, strain distribution, and locking along primary and secondary faults.
Donglin Wu, Chunyan Qu, Dezheng Zhao, Han Chen, Yilin Rong, Xiaoyi Wang, Xinjian Shan   +6 more
wiley   +1 more source

Areas prone to slow slip events impede earthquake rupture propagation and promote afterslip. [PDF]

Sci Adv, 2018
Frequent slow slip events and rapid postseismic slip reveal persistent aseismic fault areas delineating future seismic ruptures.
Rolandone F, Nocquet JM, Mothes PA, Jarrin P, Vallée M, Cubas N, Hernandez S, Plain M, Vaca S, Font Y.   +9 more
europepmc   +6 more sources

Challenging the rate‐state asperity model: Afterslip following the 2011 M9 Tohoku‐oki, Japan, earthquake

Geophysical Research Letters, 2012
Prior to the 2011 M9 Tohoku‐oki earthquake, subduction at the Japan Trench was characterized by M7‐8 earthquakes, sometimes rupturing the same source regions (seismic asperities), followed by extensive afterslip detected by GPS measurements. A physically‐
Kaj M. Johnson, Jun'ichi Fukuda, Paul Segall   +2 more
doaj   +1 more source

A Transient in Surface Motions Dominated by Deep Afterslip Subsequent to a Shallow Supershear Earthquake: The 2018 Mw7.5 Palu Case

Geochemistry, Geophysics, Geosystems, 2021
The 2018 Mw7.5 Palu earthquake is a remarkable strike‐slip event due to its nature as a shallow supershear fault rupture across several segments and a destructive tsunami that followed coseismic deformation. GPS offsets in the wake of the 2018 earthquake
N. Nijholt, W. J. F. Simons, J. Efendi, D. A. Sarsito, R. E. M. Riva   +4 more
doaj   +1 more source

Detection and Modeling of the Effect of Large Earthquakes in GRACE/GRACE‐FO Mascons

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract The usefulness of Gravity Recovery and Climate Experiment (GRACE) and GRACE Follow‐On (GRACE/FO) data products for ocean studies remains limited in a few areas, where large gravity signals from the 2011 Japan earthquake and three major earthquakes in the Andaman‐Sumatra area (in 2004, 2007, and 2012) obscure vastly smaller signals of interest ...
Jennifer A. Bonin, Nadege Pie, Don Chambers, Mark E. Tamisiea, Himanshu Save   +4 more
wiley   +1 more source

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

Vertical deformation model on postseismic phase using exponential and logarithmic function based on InSAR

Geodesy and Geodynamics, 2023
The Palu MW7.4 earthquake occurred on September 28, 2018, with the epicenter at 119.86°, 0.72°. The severe shaking caused severe damage in Central Sulawesi, especially in Palu.
Irma Yusiyanti, Tattyana Wening Kalbuadi Prajardi, Yofita Indah Saputri, Cecep Pratama   +3 more
doaj   +1 more source

Early aftershocks and afterslip surrounding the 2015 Mw 8.4 Illapel rupture [PDF]

Earth and Planetary Science Letters, 2017
On 16 September 2015, the Mw 8.4 Illapel earthquake ruptured a section of the subduction thrust on the west coast of central Chile. The mainshock was followed by numerous aftershocks including some normal-faulting events near the trench. We apply a template matching approach to improve the completeness of early aftershocks within one month of the ...
Hui Huang, Wenbin Xu, Lingsen Meng, Roland Bürgmann, Juan Carlos Baez   +4 more
openaire   +3 more sources