Results 51 to 60 of about 1,209 (179)

Validation of ShakeMaps Created From Global Navigation Satellite System (GNSS) Velocities

Earthquake Spectra, Volume 42, Issue 3, August 2026.
Ground velocity observations generated through a time difference of Global Navigation Satellite Systems (GNSS) phase observables and orbits have been shown to be comparable to seismic recordings without clipping during intense ground motions. Computing GNSS velocities is also computationally scalable and increases the density of ground motion ...
Jensen V. DeGrande, Brendan W. Crowell
wiley   +1 more source

Analysis of Hypocenter Position of Bengkulu Earthquake on April 15, 2023 Using 2D and 3D Grid Search Method Based on USGS Data

Jurnal Fisika Flux
Earthquakes are natural events that can have serious impacts on human life and the environment. This study aims to improve the accuracy of earthquake hypocenter determination by applying the 2D dan 3D Grid Search method to seismic data recorded by three ...
Firdos Bahar Sidik, Savira Zahrul Khumairo, Farizki Budi Pangestu, Triya Illmi Sakinah, Muhamad Raihan Putra Febrian, Risaldi Fauzan Laksono, Jihan Syafina Nasution   +6 more
doaj   +1 more source

Reappraisal of Holocene Caldera Resurgence at Campi Flegrei (Southern Italy): A Long‐Lived Magma‐Driven Resurgent Dome System

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Caldera systems commonly experience inner resurgence, which shapes patterns of volcanic activity. However, incomplete reconstructions of past ground deformation can lead to incorrect recognition of precursory signals. The Campi Flegrei caldera (Italy) provides an exceptional opportunity to address this issue as uplifted marine sediments ...
Jacopo Natale, Stefano Vitale
wiley   +1 more source

Kinematics and Dynamics of Normal Faults in Southern Tibet: Insights From the 2025 Mw 7.1 Dingri Earthquake

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Normal faults in southern Tibet have long suffered from limited ground‐based seismic and geodetic observations, constraining our understanding of both interseismic and coseismic processes and their interactions. The 2025 Mw 7.1 Dingri earthquake provides an opportunity to address these gaps.
Haicheng Xiong, Yanchuan Li, Xinjian Shan, Zhenjie Wang, Yingfeng Zhang, Zhaowu Guo, Chenglong Li, Renqi Lu, Jun Hua, Chunyan Qu   +9 more
wiley   +1 more source

Bayesian Inference of Fault Slip Heterogeneity and Overlap: Application to 2019 Ridgecrest Earthquakes and Afterslip

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Fault slip occurs in both seismic and aseismic styles with spatial variability across scales, yet non‐unique source inference limits our ability to resolve slip complexity and dynamics. Here we evaluate the effect of spatial smoothing regularization in Bayesian frameworks by comparing an unregularized (BUR) approach that samples distributed ...
Xiong Zhao, Junle Jiang
wiley   +1 more source

Transfer Learning and Benchmarking for Induced Seismic Event Detection: Insights From Oklahoma

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.
Abstract Machine learning models for microseismicity detection are often limited by the scarcity of large and high‐quality labeled data sets in many regions. To address this need, we introduce the Oklahoma Labeled AI Dataset (OKLAD), a manually curated data set compiled by the Oklahoma Geological Survey (OGS).
Hongyu Xiao, Jacob I. Walter, Paul Ogwari, Long M. Ho, Andrew D. Thiel, Nicholas Gregg, Brandon Mace, Isaac Woelfel   +7 more
wiley   +1 more source

Fault Geometry Invariance and Differentiable Ensemble Solutions for Simultaneous Fault and Slip Inversion in Heterogeneous Crustal Structures

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.
Abstract Fault slip inversions based on geodetic observations deepen our understanding of earthquake source processes. Previous attempts to simultaneously estimate the fault geometry and slip distribution have typically assumed a homogeneous half‐space owing to the prohibitively high computational costs of conventional numerical approaches.
Tomohisa Okazaki, Ryoichiro Agata, Masayuki Kano, Takeo Ito, Kazuro Hirahara, Naonori Ueda   +5 more
wiley   +1 more source

Systematic mapping study: automatic recognition and localization of volcanic seismic events

Frontiers in Earth Science
Active volcanoes represent a significant hazard to surrounding communities, requiring continuous and reliable monitoring. While seismic signals constitute the main source of information, each volcano produces massive datasets that are difficult to ...
Fernando Lara, Fernando Lara, Ana Zambrano, Román Lara-Cueva, Felipe Grijalva   +4 more
doaj   +1 more source

High‐Resolution Imaging of a Distant M6 Intermediate‐Depth Earthquake Using Ocean‐Bottom DAS and Seismic Network

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Distributed Acoustic Sensing (DAS) provides dense, wide‐aperture observations potentially ideal for imaging earthquake rupture processes. By combining data from a ∼450 km‐long seafloor DAS array offshore Chile and a conventional seismic network, we image an Mw 6.0 intermediate‐depth earthquake ∼400 km away in Argentina, achieving km‐scale ...
Yuqing Xie, Jean‐Paul Ampuero, Martijn van den Ende, Tong Zhou, Alister Trabattoni, Marie Baillet, Diane Rivet   +6 more
wiley   +1 more source

b‐Values of Large Earthquake Sequences Depend on Their Mainshock Location

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract We evaluate four hypotheses regarding b‐values in large earthquake sequences using the Japanese earthquake catalog: H1 ${\mathcal{H}}_{1}$: Around large earthquakes, b‐values vary more than expected at random. H2 ${\mathcal{H}}_{2}$: b‐values decrease prior to large earthquakes.
Aron Mirwald, Leila Mizrahi, Bogdan Enescu, Stefan Wiemer   +3 more
wiley   +1 more source