Results 91 to 100 of about 1,427 (180)

Regional Variation of Coda Q in Major Fault Zones of Anatolia and Its Implications

Applied Sciences
This study utilizes coda wave analysis—focusing on scattering and attenuation mechanisms—to map the complex tectonic framework and active faulting characteristics of the East and Southeast Anatolia regions based on the single back-scattering model.
Ufuk Aydın
doaj   +1 more source

Sensitivity of Ultrasonic Coda Wave Interferometry to Material Damage-Observations from a Virtual Concrete Lab. [PDF]

Materials (Basel), 2021
Finger C, Saydak L, Vu G, Timothy JJ, Meschke G, Saenger EH.   +5 more
europepmc   +1 more source

Revealing fly ash induced cement hydration retardation: The application of embedded integrated sensing element and coda wave analysis

Case Studies in Construction Materials
Fly ash (FA) is a common supplementary cementitious material and it delays early cement hydration. This study applies a novel integrated sensing element (ISE) to monitor cement hydration and to characterize the influence of FA.
Yuanxing Wang, Weiwei Xu, Ming Sun, Pingfeng Li, Shijie Wang, Weijian Ding, Lei Qin, Yu Liang, Yu Wang   +8 more
doaj   +1 more source

Coda wave interferometry to monitor the evolution of rock mass damage and saturation in Opalinus Clay: a study at the Mont Terri Underground Laboratory [PDF]

Swiss Journal of Geosciences
We explore the potential to monitor the evolution and extent of structurally controlled rock mass damage in faulted Opalinus Clay shale at the Mont Terri Underground Rock Laboratory (MT URL) using coda wave interferometry.
Anne Obermann, Martin Ziegler
doaj   +3 more sources

Feasibility of Using Shear Wave Ultrasonic Probes as Pump-Wave Sources in Concrete Microcrack Detection and Monitoring by Nonlinear Ultrasonic Coda Wave Interferometry. [PDF]

Sensors (Basel), 2022
Galaz Donoso BA, Avudaiappan S, Saavedra Flores EI.   +2 more
europepmc   +1 more source

A systematic review of Coda Wave Interferometry technique for evaluating rock behavior properties: From single to multiple perturbations

Earth Energy Science
Understanding rock behavior is crucial in mine geotechnical engineering to ensure construction efficiency, mitigate rock-related hazards, and promote environmental sustainability.
Jie Chen, Chao Zhu, Yuanyuan Pu, Yichao Rui, Bo Liu, Derek B. Apel   +5 more
doaj   +1 more source

Review of temporal variations of underground medium based on seismic waves

地球与行星物理论评
As a vibrant and ever-evolving planet, the Earth has a dynamic evolution process spanning more than a dozen orders of magnitude from seconds (e.g., seismic rupture) to millions of years (e.g., mantle convection).
Yi Meng, Zhikun Liu
doaj   +1 more source

Spatial coda Q fluctuation as a probe for heterogeneous media of Kopili fault zone, Northeast region, India

Discover Geoscience
In recent years, the Kopili fault reported an increase in seismic activity. Coda-wave attenuation and its frequency dependency can be used to examine the seismo-tectonics. Here, we document the regional heterogeneity in the coda attenuation. Present data
Nilutpal Bora, Rajib Biswas
doaj   +1 more source

Wave-Screening Methods for Prestress-Loss Assessment of a Large-Scale Post-Tensioned Concrete Bridge Model Under Outdoor Conditions

Applied Sciences
This paper presents advancements in structural health monitoring (SHM) techniques, with a particular focus on wave-screening methods for assessing prestress loss in a large-scale prestressed concrete (PC) bridge model under outdoor conditions.
Chun-Man Liao, Felix Bernauer, Ernst Niederleithinger, Heiner Igel, Céline Hadziioannou   +4 more
doaj   +1 more source

High‐Resolution Tomography for the Upper‐Mantle Structure in North China by Full‐Waveform Inversion of Teleseismic P Wave and Its Codas

Geophysical Research Letters
We investigate the structure and tectonic environment in the crust and upper mantle beneath the North China Craton (NCC) by conducting a full‐waveform inversion of teleseismic P and its coda waves from densely distributed broadband seismic stations.
Xuan Zhao, Yi Wang, Jia Yi, Qiwen Zhu, Li Zhao   +4 more
doaj   +1 more source