Results 51 to 60 of about 1,052 (200)

Attribute-Guided Prestack Seismic Waveform Inversion—Methodology, Applications, and Feasibility to Characterize Underground Reservoirs for Potential Hydrogen Storage

Eng
Prestack seismic waveform inversion starts with an initial model and computes synthetic or predicted seismic data using a wave equation-based approach.
Dwaipayan Chakraborty, Subhashis Mallick
doaj   +1 more source

Bayesian Modeling of Crustal Azimuthal Anisotropy Supports Partial Crust–Mantle Anisotropic Decoupling in a Continental Back‐Arc, Northeast China

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract How crustal deformation responds to complex mantle flow in continental back‐arc settings remains poorly constrained. Here, we develop a Bayesian working‐likelihood approach to estimate crust‐averaged azimuthal anisotropy from P‐wave receiver functions. The method separates crust‐averaged velocity anisotropy from dip‐related apparent anisotropy
Chunsen Li, Xiao Xu, Xiaoyu Guo, Xiaofei Tong, Hengcheng Ying, Lingyan Li   +5 more
wiley   +1 more source

Fully probabilistic seismic source inversion – Part 2: Modelling errors and station covariances [PDF]

Solid Earth, 2016
Seismic source inversion, a central task in seismology, is concerned with the estimation of earthquake source parameters and their uncertainties. Estimating uncertainties is particularly challenging because source inversion is a non-linear problem.
S. C. Stähler, K. Sigloch
doaj   +1 more source

Very‐Long‐Period Seismic Signals During Lateral Dike Propagation at Piton de La Fournaise Volcano

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract We report a previously undocumented sequence of very long period (VLP) signals preceding the September 2022 eruption at Piton de la Fournaise. These events occurred during lateral magma propagation and exhibit quasi‐periodic sawtooth‐shaped displacement transients.
Z. Duputel, O. Lengliné, L. Costes, V. Ferrazzini   +3 more
wiley   +1 more source

Feasibility study of full waveform inversion of Love-SH waves for detecting small-scale shallow anomalies

AIP Advances
In engineering surveys, conventional SH-wave seismic exploration methods exhibit limited resolution for detecting small-scale shallow anomalies, often failing to meet practical requirements.
Xu Sun, Wei Xu, Yingju Xiong, Yong Li, Xiaoqing Song   +4 more
doaj   +1 more source

Multiparameter Elastic Full Waveform Inversion of Ocean Bottom Seismic Four-Component Data Based on A Modified Acoustic-Elastic Coupled Equation

Remote Sensing, 2020
Ocean bottom seismometer (OBS) can record both pressure and displacement data by modern marine seismic acquisitions with four-component (4C) sensors.
Minao Sun, Shuanggen Jin
doaj   +1 more source

Full‐scale Shaking Table Tests on a 10‐story Steel Moment‐resisting Frame Building with Buckling‐restrained Braces

Earthquake Engineering &Structural Dynamics, Volume 55, Issue 10, Page 2356-2378, August 2026.
ABSTRACT In February 2023, a comprehensive series of shaking table tests were conducted at the E‐Defense facility, the world's largest three‐dimensional earthquake simulator, on a full‐scale 10‐story steel moment‐resisting frame supplemented with BRBs.
Jun Fujiwara, Jialiang Jin, Jionghui Li, Tianhao Yan, Ryota Nishi, Akiko Kishida, Koichi Kajiwara, Takuya Nagae, Taichiro Okazaki, Tatsuya Asai   +9 more
wiley   +1 more source

Regional Earthquake Ground Motion Simulations for Southern California With EQSIM: Insights From the 2008 Chino Hills, 2024 Highland Park, and 2021 Carson Earthquakes

Earthquake Spectra, Volume 42, Issue 3, August 2026.
This study presents physics‐based, 3D simulations using the EQSIM framework for several earthquakes in the Los Angeles region. The primary objective was to assess the ability of deterministic physics‐based ground motion simulations to reproduce the observed motions from historical events.
Chu‐Han (Clifford) Yen, Arben Pitarka, Houjun Tang, Rie Nakata, David McCallen, Ertugrul Taciroglu   +5 more
wiley   +1 more source

High-Resolution Subsurface Characterization Using Seismic Inversion—Methodology and Examples

Eng
Subsurface characterization for lithological and fluid properties is important for all aspects of geophysical exploration where estimating a high-resolution elastic property through seismic inversion is vital.
Subhashis Mallick, Aditya Srivastava, Dwaipayan Chakraborty   +2 more
doaj   +1 more source

Illumination and Resolution Analyses on Marine Seismic Data Acquisitions by the Adjoint Wavefield Method

Terrestrial, Atmospheric and Oceanic Sciences, 2012
We applied a wave-equation based adjoint wavefield method for seismic illumination and resolution analyses. A two-way wave-equation is used to calculate directional and diffracted energy fluxes for waves propagating between sources and receivers to the ...
Kun-Sung Li How-Wei Chen
doaj   +1 more source