Results 71 to 80 of about 1,776,592 (192)

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

Plume‐Fed Magmatic Fluids Weakened Crust and Promoted a Large Intraplate Earthquake in Northern Hainan (South China)

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Large intraplate earthquakes are paradoxical because they occur far from active plate boundaries. Northern Hainan Island (South China) hosts the 1605 Qiongbei M7.5 earthquake within a volcanic province linked to the Hainan mantle plume. New shear‐wave velocity images reveal two shallow low‐velocity zones extending to ∼10 km depth: a stronger ...
Lue Yang, Lun Li, Chen Cai, Jialong He, Hongyi Li, Yulong Xue, Jinming Zhang, Yuan Gao, Ziwei Li, Rui Gao   +9 more
wiley   +1 more source

3D Subduction Interface Model for the Hikurangi Margin, New Zealand: Implications for Slow Slip Events

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract We present a new 3D Hikurangi subduction interface model by using an implicit modeling approach that integrates seismic‐reflection profiles, relocated hypocenters, focal mechanism orientations, and tomographic interpretations. The model reveals along‐strike transitions in slow slip events (SSEs) that correlate with subduction interface ...
Haoran Ma, Maomao Wang, Andreas Plesch, Fuyuan Wang, Renqi Lu   +4 more
wiley   +1 more source

DAMPING MEASUREMENTS FROM MICROSEISMIC SIGNALS TO INFER ROCK MASS DAMAGING

Italian Journal of Engineering Geology and Environment, 2019
Geophysical monitoring performed on unstable portions of rock masses can help in defining a variation in its stability conditions, resulting as a useful indicator for landslide risk reduction. In particular, understanding geophysical markers of rock mass damaging, intended as the processes that lead to the formation or to the growth of fractures, could
DANILO D’ANGIÒ, LUCA LENTI, SALVATORE MARTINO   +2 more
openaire   +2 more sources

Microseismic monitoring of the controls on coastal rock cliff erosion [PDF]

, 2012
The aim of this thesis has been to improve understanding of the controls on coastal rock cliff erosion, utilising microseismic ground motion. Coastal cliff erosion has remained poorly understood, in part confounded by the challenges associated with ...
NORMAN, EMMA,CATHERINE, Norman, Emma Catherine   +1 more
core  

The Single-Channel Microseismic Mine Signal Denoising Method and Application Based on Frequency Domain Singular Value Decomposition (FSVD)

, 2023
The purpose of denoising microseismic mine signals (MMS) is to extract relevant signals from background interference, enabling their utilization in wave classification, identification, time analysis, location calculations, and detailed mining feature ...
Quanjie Zhu, Lei Gu, Longkun Sui, Qingsong Li, Dacang Wang, Yage Li   +5 more
core   +1 more source

Identification of Microseismic Signals in Coal Mine Rockbursts Based on Hybrid Feature Selection and a Transformer

Applied Sciences
Deep learning algorithms are pivotal in the identification and classification of microseismic signals in mines subjected to impact pressure. However, conventional machine learning techniques often struggle to balance interpretability, computational ...
Jizhi Zhang, Hongwei Wang, Tianwei Shi
doaj   +1 more source

Probability and Recurrence of Maximum Magnitude Based on Stochastic Modeling of Internal Fault Geometry

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 9, September 2026.
Abstract The recognition that relay zones along faults can act as barriers to earthquake propagation implies that rupture size may not be random and earthquakes are constrained by fault geometry. Resolution and observational biases can, however, complicate the integration of actual fault zone geometries into deterministic modeling strategies, thereby ...
Vincent Roche, Mirko van der Baan, John Walsh, Tom Manzocchi   +3 more
wiley   +1 more source

Comparison of Surface and Downhole Microseismic Acquisition [PDF]

, 2017
The most common microseismic monitoring methods used in the industry today are by the use of surface arrays and downhole arrays. In surface acquisition, sensors are deployed on the surface in large two-dimensional arrays, allowing this method to provide
Rohan, Kara
core  

The Parguera Fault System: Possible Quaternary Reactivation of Bedrock Faults in Southwest Puerto Rico

Tectonics, Volume 45, Issue 9, September 2026.
Abstract We present evidence of a previously unrecognized east‐west‐trending normal fault, named the Parguera Fault, in southwest Puerto Rico. The fault is located at the northwestern edge of seismicity from the southwest Puerto Rico seismic sequence that began in 2019, near the coastal town of La Parguera.
Jessica Thompson Jobe, Richard Briggs, Victor Ortega Diaz, Emerson M. Lynch, K. Stephen Hughes, Thomas Pratt, Anjana Shah, Francisco Hernandez, Chris M. Justiniano Vélez, Alberto López‐Venegas, Elizabeth Vanacore, M. Morow Tan, Harrison Gray   +12 more
wiley   +1 more source