Results 171 to 180 of about 985 (249)

The 2025 Mw 7.6 Aomori Megathrust Earthquake in Northeast Japan: Failure of a Structurally and Rheologically Bounded Asperity Beneath a Cold Mantle Wedge

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract To explore mechanisms of rupture segmentation, we invert coseismic GNSS offsets for the 2025 Mw 7.6 Aomori, Japan earthquake. Our preferred curved‐fault solution images a compact thrust rupture at 25–50 km depth with peak slip ∼2.5 m near 35 km.
Xiaolong Zhang, Shaoyang Li, Jinhong Shi, Yuji Itoh, Ji Zhang, Aitaro Kato, Ling Chen   +6 more
wiley   +1 more source

Volcanic eruptions and the global subsea telecommunications network. [PDF]

Bull Volcanol
Clare MA, Yeo IA, Nash J, Hunt JE, Panuve S, Wilkie A, Williams R, Dowey N, Rowley P, Barclay J, Phillips J, Scarlett J, Engwell S, Henstock TJ, Seabrook S, Watson S, Wysoczanski R, Ribo M, Cronin S, Talling PJ, Cassidy M, Watt S, Robertson R.   +22 more
europepmc   +1 more source

High‐Resolution 3‐D Lithospheric Structure of the Subducting Carnegie Ridge and the Ecuadorian Margin Imaged From Teleseismic Receiver Functions

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract The Ecuadorian margin is a forearc‐arc system shaped by oceanic terrane accretion and Carnegie Ridge subduction, yet the accretion mechanism and ridge subduction extent remain poorly constrained. Using teleseismic P‐wave receiver functions from dense seismic arrays, we image velocity discontinuities within the overriding plate and subducting ...
Cong Li, Susan L. Beck, Jonathan R. Delph, Boe Ericksen, Anne Meltzer, Colton Lynner, Mario Ruíz, Mónica Segovia, Stephen Hernández, Sandro Vaca, Alexander Wickham Piotrowski, Gabriela Ponce   +11 more
wiley   +1 more source

3D structure and dynamics of Campi Flegrei enhance multi-hazard assessment. [PDF]

Nat Commun
De Landro G, Vanorio T, Muzellec T, Russo G, Lomax A, Virieux J, Zollo A.   +6 more
europepmc   +1 more source

Back‐Propagating Earthquake Rupture Controlled by Fluid‐Modulated Effective Normal Stress

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Back‐propagating earthquake rupture (BPR), where slip migrates opposite to the main rupture direction, is observed in several earthquakes but its origin remains poorly understood, particularly the role of fluids. We use dynamic simulations of frictional sliding coupled with fluids to explore the mechanisms of BPR. Our simulations show that BPR
Jiayi Ye, Luca Dal Zilio, Domenico Giardini   +2 more
wiley   +1 more source

<i>b</i>-Value Evaluation and Applications to Seismic Hazard Assessment. [PDF]

Entropy (Basel)
Chang Y, Wang R, Han P, Wang J, Miao M, Zeng Z, Wu W, Jiang C, Meng L, Shi H, Hattori K.   +10 more
europepmc   +1 more source

Double Trouble: Two Active Magma Reservoirs Identified at Masaya Volcano, Nicaragua, Using Satellite Geodesy

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract We analyze and model ground deformation at Masaya volcano, Nicaragua, using Sentinel‐1 Interferometric Synthetic Aperture Radar (InSAR) time series spanning January 2018–February 2024. Time series show the Masaya Central Reservoir (MCR) experienced ∼3 cm of line of sight (LOS) displacement away from the satellite north of the Santiago crater ...
E. Johnson, Y. C. Kim, C. Wauthier
wiley   +1 more source

Burst-like swarms in the Campi Flegrei caldera accelerating unrest from 2021 to 2024. [PDF]

Nat Commun
Giudicepietro F, Avino R, Bellucci Sessa E, Bevilacqua A, Bonano M, Caliro S, Casu F, De Cesare W, De Luca C, De Martino P, Di Traglia F, Di Vito MA, Dolce M, Esposito AM, Lanari R, Macedonio G, Manunta M, Minopoli C, Monterroso F, Neri A, Ricciolino P, Rufino F, Santi A, Scarpato G, Striano P, Tramelli A, Chiodini G.   +26 more
europepmc   +1 more source

Tectonic Tremor Reveals Slow Deformation Along the Antarctic–South American Subduction Zone

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract The Antarctic–South American subduction zone is among the least explored convergent margins and lacks documented large interplate earthquakes despite ongoing convergence. Here we report the discovery of tectonic tremor along this plate boundary using continuous seismic data.
K. Azúa, S. Ruiz, S. Ide
wiley   +1 more source

Single-station analysis of Campi Flegrei (Italy) seismic signals using multiscale entropy and unsupervised learning. [PDF]

Sci Rep
Grimaldi A, Amoroso O, Scarpetta S, Convertito V, Napolitano F, Messuti G, Capuano P, Nardone L, Gaudiosi G, Galluzzo D.   +9 more
europepmc   +1 more source