Results 61 to 70 of about 227 (164)

Monitoring Near‐Surface Changes Using Anthropogenic Seismic Vibrations

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract The abundance of anthropogenic seismic noise provides a valuable resource for monitoring dynamic subsurface property changes. We utilize railway and wind turbine‐induced vibrations recorded by a geophone array to estimate surface wave attenuation and velocity in the underlying glacial deposits of Illinois.
Sayan Mukherjee, Yunyue Elita Li, Andrew Stumpf, Heng Zhang   +3 more
wiley   +1 more source

Monitoring a concrete bridge girder with the coda wave interferometry method

SMAR 2019 (Smart Monitoring, Assessment and Rehabilitation of Civil Structures), 2019
Concrete bridges play an important role in the construction of urban infrastructure. Environmental factors and excessive use accelerate the aging of bridges. The collapse of bridges can cause casualties and serious economic losses. Hence, more and more people realize the necessity of structural health monitoring.
WANG, XIN, NIEDERLEITHINGER, ERNST, CHAKRABORTY, JOYRAJ, KLIKOWICZ, PIOTR   +3 more
openaire   +2 more sources

Frequency‐Dependent Seismic Velocity Variations Reveal Layered Aquifer Behavior Under Groundwater Fluctuations

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Frequency‐dependent seismic velocity variations (dv/v) provide depth‐resolved constraints on aquifer behavior under groundwater fluctuations. We analyze 17 years of dv/v time series from ambient noise interferometry in the Chiang Mai Basin, Thailand, and observe contrasting dv/v behavior below and above 1 Hz. By integrating GPS, meteorological,
C. Rattanavetchasit, H.‐H. Huang, H. Sone, Y.‐M. Wu   +3 more
wiley   +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

Inferring cumulative crack widths in reinforced concrete structures using Coda Wave Interferometry of ultrasound

Structural Concrete, Volume 27, Issue 1, Page 247-262, February 2026.
Abstract Whether concrete structures are cracked, how wide these cracks are, and whether they must be regarded as damaging, is a central issue in structural health monitoring. Ultrasonic measurements evaluated with the sensitive Coda Wave Interferometry (CWI) have the potential to detect cracks early—long before they become visible. This paper presents
Felix Clauß, Noah Sträter, Mark Alexander Ahrens, Peter Mark   +3 more
wiley   +1 more source

Precursory velocity changes prior to the 2019 paroxysms at Stromboli volcano, Italy, from coda wave interferometry

Volcanica
Open-conduit basaltic volcanoes are susceptible to sudden transitions from mild activity to violent explosive eruptions with little to no warning. Such was the case at Stromboli in the summer of 2019, when two paroxysmal explosions occurred within ...
Alexander Yates, Corentin Caudron, Aurélien Mordret, Philippe Lesage, Andrea Cannata, Flavio Cannavo, Thomas Lecocq, Virginie Pinel, Lucia Zaccarelli   +8 more
doaj   +1 more source

Potential of Nonlinear Ultrasonic Indicators for Nondestructive Testing of Concrete

Advances in Civil Engineering, 2010
In the context of a growing need for safety and reliability in Civil Engineering, acoustic methods of nondestructive testing provide answers to a real industrial need.
C. Payan, V. Garnier, J. Moysan
doaj   +1 more source

Sensitivity of ultrasonic coda wave interferometry to material damage [PDF]

, 2021
Ultrasonic measurements are used in civil engineering for structural health monitoring of concrete infrastructures. The late portion of the ultrasonic wavefield, the coda, is sensitive to small changes in the elastic moduli of the material. Coda Wave Interferometry (CWI) correlates these small changes in the coda with the wavefield recorded in intact ...
Finger, Claudia (Dr. rer. nat.), Saydak, Leslie (M. Sc.), Vu, Giao (M.Sc.), Timothy, Jithender J. (Dr.-Ing.), Meschke, Günther (Prof. Dr. techn.), Saenger, Erik H. (Prof. Dr. rer. nat.)   +5 more
openaire  

Evaluating Multi‐Agent and Wavelet‐Transform Uncertainties in Lunar Seismic Ambient Noise Exploration

Earth and Space Science, Volume 13, Issue 2, February 2026.
Abstract Passive seismic ambient noise interferometry (ANI) has shown potential for lunar seismic exploration, offering the capability to detect near‐surface subsurface structures critical for future lunar mission, such as near‐surface ice deposits and lava tubes, without the need for active seismic sources.
Kai Nierula, Sabrina Keil, Dmitriy Shutin, Ban‐Sok Shin, Heiner Igel   +4 more
wiley   +1 more source

Seismic Velocity Variations, Ground Deformation and the Role of Fluids During a Low‐Energy Seismic Swarm

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract On March 9th $9\mathrm{th}$, 2023, three small earthquakes (3.8≤Mw≤4.5) $(3.8\le {M}_{w}\le 4.5)$ occurred near Umbertide (Central Italy), within 4 hours. Analyzing seismic ambient noise in the frequency band 0.1–1 Hz from six seismometers within 20 km of the Mw 4.5, we detect a significant drop in seismic velocity at the time of occurrence of
Eugenio Mandler, Lucia Zaccarelli, Massimo Nespoli, Maria Elina Belardinelli, Francesco Pintori, Enrico Serpelloni, Adriano Gualandi, Lauro Chiaraluce   +7 more
wiley   +1 more source