Results 121 to 130 of about 3,752,834 (199)

A New Experimental Design to Measure Second‐ and Third‐Order Anisotropic Rock‐Stiffness Coefficients Using a Single‐Rock Sample

Geophysical Prospecting, Volume 74, Issue 8, October 2026.
ABSTRACT We developed a new experimental setup for measuring and modelling stress‐induced anisotropy and nonlinearity in cylindrical rock samples. Multidirectional ultrasonic velocity measurements were conducted under laboratory conditions and during triaxial‐stress testing to capture dynamic rock properties. This is done by placing endcap transducers (
Gabriel Gallardo‐Giozza, Domenico Crisafulli, D. Nicolás Espinoza, Carlos Torres‐Verdín   +3 more
wiley   +1 more source

Fault Slip Reversals Preceded the Intraplate 2021 Earthquake Series in the Vienna Basin (Central Europe)

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Fault‐slip reversals indicate transient stress changes and may illuminate earthquake preparation processes. Here we present high‐resolution observations of sub‐millimetric creep and slip reversals on the Altaquelle Fault, a Quaternary normal fault in the southern Vienna Basin, preceding a regionally significant intraplate earthquake sequence ...
I. Baroň, J. Jelének, M. Rowberry, R. Melichar, M. del Puy Papí‐Isaba, R. Schultz, J. Balek, J. Stemberk, Ľ. Sokol, H. Hausmann, L. Plan, G. Winkler, B. Grasemann, R. Bürgmann   +13 more
wiley   +1 more source

Segmented Moho Uplift and Implications for Magmatic Underplating Beneath the Datong Basin

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Understanding how the deep crust responds to coupled tectonic and magmatic processes is essential for deciphering intracontinental rifting. We apply high‐resolution passive‐source reverse time migration to teleseismic P‐wave receiver functions recorded by a dense seismic array to image the Moho beneath the Datong Basin. Our observations reveal
Chunlong Li, Huai Zhang, Yu Jeffrey Gu, Yicun Guo, Pei He, Guangyao Yin, Yaolin Shi   +6 more
wiley   +1 more source

Enhancing multiparameter elastic full-waveform inversion with a Siamese network

Using the proper data misfit measure within full-waveform inversion (FWI) is crucial for achieving robust inversion performance. This choice is complicated by the fact that our simulations are often based on simplified assumptions of the earth admitting ...
Alkhalifah, Tariq Ali, Saad, Omar M.
core   +1 more source

Fault‐Controlled Plumbing System Beneath Lipari Volcanic Island Revealed by Seismic Matrix Imaging

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Lipari Island hosts an active magmatic–hydrothermal system, but its deep plumbing architecture remains poorly resolved due to strong seismic scattering. We apply passive seismic matrix imaging to public vertical‐component cross‐correlation functions from the dense 2018 Lipari nodal array, recovering relative‐reflectivity structures to ∼10 km ...
Jia Wei, Qiancheng Liu, Ling Chen
wiley   +1 more source

Melt‐Regulated Crustal Kinematics in the Pamir, NW Tibetan Plateau: Insights From Surface‐Wave Tomography

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract The Pamir, located at the northwestern margin of the Tibetan Plateau, is undergoing E–W extension within its interior, accommodated by micro‐block motions along major fault systems; however, the mechanisms governing this modern block kinematics remain elusive.
Bingfeng Zhang, Shijie Hao, Xuewei Bao, Ping Tong   +3 more
wiley   +1 more source

Source‐Unbiased Subsurface Monitoring With Seismic Noise

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract This study addresses a key limitation of seismic noise interferometry for subsurface monitoring: the impact of non‐stationary sources on seismic velocity change estimates. Conventional methods rely on time‐period references, which can inherit source‐related effects when source conditions vary, biasing the estimated velocity changes.
Pilar Sánchez‐Pastor, Martin Schimmel, Samuel Jorde, Helena Seivane, Jordi Díaz, Abraham Balaguera, Susana Rodríguez, Montserrat Torné   +7 more
wiley   +1 more source

Square-Root Variable Metric based elastic full-waveform inversion – Part 1: Theory and validation

, 2019
Full-waveform inversion (FWI) has become a powerful tool in inverting subsurface geophysical properties. The estimation of uncertainty in the resulting Earth models and parameter trade-offs, although equally important to the inversion result, has however
Liu, Qiancheng, Peter, Daniel, Tape, Carl   +2 more
core   +1 more source

Efficient scattering approach to seismic full-waveform inversion in anisotropic elastic media with variable density [PDF]

This paper introduces a novel matrix-free approach for full waveform inversion in anisotropic elastic media, incorporating density variation through the utilization of the distorted Born iterative method. This study aims to overcome the computational and
Jakobsen, Morten, Nævdal, Geir, Xiang, Kui, Shekhar, Ujjwal, Eikrem, Kjersti Solberg   +4 more
core   +1 more source

Quantifying subsurface fracture damage in glaciers using fiber-optic seismology. [PDF]

Sci Adv
Hudson TS, Walter F, Noe S, Zunino A, Kendall JM, Edme P, Fichtner A.   +6 more
europepmc   +1 more source