Results 41 to 50 of about 1,245 (189)

Surface Consistent Seismic Hazard Assessment in the Shillong Plateau, Northeast India: A Probabilistic Approach Using Multiple Source Models and a Logic Tree Framework

Earthquake Engineering &Structural Dynamics, Volume 55, Issue 11, Page 2855-2879, September 2026.
ABSTRACT We perform probabilistic seismic hazard analysis (PSHA) in the Shillong Plateau by clubbing the up‐to‐date earthquake data and seismotectonic properties of the study area. Twenty‐one areal seismic sources are delineated based on the updated earthquake catalog, tectonic, and fault plane solutions.
Mohd Shahabuddin, William Kumar Mohanty, Eleftheria Papadimitriou   +2 more
wiley   +1 more source

Dike‐Induced Earthquakes as Probes of the Local Stress Field Prior to the 1998 Eruption of the Piton de la Fournaise Volcano, La Réunion

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Volcano‐tectonic (VT) earthquakes generated during dike propagation provide useful constraints on stress changes in volcanic systems. During the 1998 pre‐eruptive unrest at Piton de la Fournaise, ∼600 VT earthquakes were recorded. Using manually picked first‐motion polarities and corrected station metadata, we calculated more than 400 high ...
Yiwen Huang, Yan Zhan, Diana C. Roman, Valérie Ferrazzini, Zacharie Duputel   +4 more
wiley   +1 more source

Devito (v3.1.0): an embedded domain-specific language for finite differences and geophysical exploration [PDF]

Geoscientific Model Development, 2019
We introduce Devito, a new domain-specific language for implementing high-performance finite-difference partial differential equation solvers. The motivating application is exploration seismology for which methods such as full-waveform inversion and ...
M. Louboutin, M. Lange, F. Luporini, N. Kukreja, P. A. Witte, F. J. Herrmann, P. Velesko, G. J. Gorman   +7 more
doaj   +1 more source

Spatial- and temporal-interpolations for efficient hybrid wave numerical simulations

Frontiers in Earth Science, 2022
The hybrid simulation method is developed for simulating wave propagation only in a localized heterogeneous media with hybrid inputs obtained once for all from a known reference model.
Hao Shen, Hao Shen, Xiaotian Tang, Xiaotian Tang, Chao Lyu, Chao Lyu, Liang Zhao, Liang Zhao   +7 more
doaj   +1 more source

Automated Tiling of Unstructured Mesh Computations with Application to Seismological Modeling

ACM Transactions on Mathematical Software, 2019
Sparse tiling is a technique to fuse loops that access common data, thus increasing data locality. Unlike traditional loop fusion or blocking, the loops may have different iteration spaces and access shared datasets through indirect memory accesses, such as A[map[i]]—hence the name “sparse.” One notable example of such loops arises in discontinuous ...
Fabio Luporini, Michael Lange 0001, Christian T. Jacobs, Gerard J. Gorman, J. Ramanujam, Paul H. J. Kelly   +5 more
openaire   +3 more sources

Toward detailed prominence seismology [PDF]

Astronomy & Astrophysics, 2011
Context. Prominence seismology exploits our knowledge of the linear eigenoscillations for representative magnetohydro- dynamic models of filaments. To date, highly idealized models for prominences have been used, especially with respect to the overall magnetic configurations. Aims.
Blokland, J.W. S., Keppens, R.
openaire   +3 more sources

Evolution of P‐wave Anisotropy as an Indicator of Pre‐failure Deformation in Shale

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Understanding the multiscale mechanical behavior of clay‐rich rocks is critical for assessing fault reactivation and the long‐term integrity of underground waste repositories. This study investigates the evolution of microdeformation in Tournemire's shale samples under compressive stress by integrating high‐resolution imaging (from an ...
Matthieu Lusseyran, Audrey Bonnelye, Alexandre Dimanov, Alexandre Tanguy, Pierre Dick, Jérôme Fortin   +5 more
wiley   +1 more source

High-performance CPU-GPU heterogeneous computing method for 9-component ambient noise cross-correlation

Earthquake Research Advances
Ambient noise tomography is an established technique in seismology, where calculating single- or nine-component noise cross-correlation functions (NCFs) is a fundamental first step.
Jingxi Wang, Weitao Wang, Chao Wu, Lei Jiang, Hanwen Zou, Huajian Yao, Ling Chen   +6 more
doaj   +1 more source

Seismic Tremor as a Precursor to Hydrothermal Explosions Near Mutnovsky Volcano (Kamchatka)

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Mutnovsky Volcano, ∼70 km SW of Petropavlovsk‐Kamchatsky, exhibits persistent degassing, hosts active hydrothermal springs and the Mutnovsky Geothermal Power Plant (MGPP) on its slopes. Using the network covariance matrix approach, we analyzed seismic data recorded in 2023–2024 by 15 seismic stations operating around Mutnovsky Volcano.
Y. Berezhnev, N. Belovezhets, N. M. Shapiro, S. Abramenkov, I. Abkadyrov, S. Yaskevich, D. Chebrov, I. Koulakov   +7 more
wiley   +1 more source

3D Converted Wave Reverse Time Migration Imaging

Seismica
We describe a newly developed method for recovering high-resolution images of seismic discontinuities, such as subducting slabs, in 3D. Our method makes use of converted S→P or P→S waves observed by dense arrays of seismometers to infer the locations ...
Leah Langer, Christopher Henze, Fred F. Pollitz, Jeffrey J. McGuire   +3 more
doaj   +1 more source