Results 61 to 70 of about 4,566 (160)

Neural Machine Translation of Seismic Ambient Noise for Soil Nature and Water Saturation Characterization

Geophysical Research Letters, Volume 52, Issue 13, 16 July 2025.
Abstract Soil nature and water saturation of the near‐surface directly influence land use resilience and sustainability in urban areas facing intense climate forcing and human activity. Seismic methods are widely applied in this context for subsurface characterization and monitoring, but often fall short in delivering joint geological, hydrogeological,
José Cunha Teixeira, Ludovic Bodet, Agnès Rivière, Santiago G. Solazzi, Amélie Hallier, Alexandrine Gesret, Sanae El Janyani, Marine Dangeard, Amine Dhemaied, Joséphine Boisson Gaboriau   +9 more
wiley   +1 more source

Microzonificación Sísmica en el Sector Noreste del área urbana de la Ciudad de Managua. [PDF]

, 2014
Managua capital de Nicaragua tiene una densidad poblacional de 4,314 hab/km2 (INIDE, 2012), esta se ubica en la región del Pacifico donde existe el mayor riesgo sísmico. De acuerdo con algunos investigadores como Faccioli (1973), Escobar, E & Corea (1988)
García, Adriana de Jesús, López Palacios, Néstor Javier   +1 more
core  

A frequency‐domain beamforming procedure for extracting Rayleigh wave attenuation coefficients and small‐strain damping ratio from 2D ambient noise array measurements

Earthquake Spectra, Volume 41, Issue 2, Page 1333-1363, May 2025.
The small‐strain damping ratio plays a crucial role in assessing the response of soil deposits to earthquake‐induced ground motions and general dynamic loading. The damping ratio can theoretically be inverted for after extracting frequency‐dependent Rayleigh wave attenuation coefficients from wavefields collected during surface wave testing.
Aser Abbas, Mauro Aimar, Brady R Cox, Sebastiano Foti   +3 more
wiley   +1 more source

Valley of Mexico site response from non‐reference site approach

Earthquake Spectra, Volume 41, Issue 2, Page 1029-1059, May 2025.
We present a model for Valley of Mexico site response that is referenced to a 30 m time‐averaged shear wave velocity (VS30) of 760 m/s. This reference condition ensures compatibility with regional ground motion models (GMM) for Central America and Mexico (CAM), which were developed from an expanded version of the NGA‐Subduction (NGA‐Sub) database as ...
Victor Contreras, Jonathan P Stewart, Juan M Mayoral, Xyoli Pérez‐Campos   +3 more
wiley   +1 more source

Velocity model estimated from seismic refraction survey and MASW, at Flamengos site (Faial island, Azores) [PDF]

, 2014
The aim of this communication is to present the velocity models of propagation of seismic waves P and S using geophysical methods, such as refraction surveys and MASW (Multichannel analysis of surface waves).
Bezzeghoud, Mourad, Borges, José Fernando, Caldeira, B., Casacão, J., Neves, S.   +4 more
core  

Evaluation of soil liquefaction from surface analysis [PDF]

, 2015
In this paper we describe how some techniques for estimating shallow shear wave velocity profilesobtainedfrommeasurementsofambient vibrations and from artificially generated waves can be used to assess sand liquefaction potential.
Aki, Aki, Andrus, Chavez-Garcia, Ishihara, Liao, Marcuson, Park, Park, Poulos, Robertson, Seed, Seed, Seed, Seed, Tokimatsu, Xia   +16 more
core   +4 more sources

Correlating Groundwater Level Fluctuations of a Fractured Confined Aquifer With Relative Variations in Seismic Velocity: A Way to Estimate the Groundwater Storage

Geophysical Research Letters, Volume 52, Issue 7, 16 April 2025.
Abstract Analysis of ambient seismic noise is of increasing interest for its potential to monitor aquifers, seismic wave velocity being sensitive to fluctuations of the water table or to pore pressure variations. The correlation with groundwater pressure variations in confined aquifers, which are often strategic, is an open scientific question, as is ...
B. Vittecoq, A. Burtin, J. Fortin
wiley   +1 more source

Application of Multichannel Analysis of Surface Waves to S-Phase Wave Anisotropy Estimation [PDF]

, 2016
The Multichannel Analysis of Surface Waves (MASW) is an increasingly used technique for recognition of a shallow geological structure and estimation of geotechnical parameters, e.g., S-wave velocity, layer density, layer thickness, shear modulus ...
Iwona Stan-Kłeczek, Maciej J. Mendecki
core   +1 more source

Geophysical imaging of the subsurface seismic structure of the Chestnut Hill Reservoir earth embankment dam (Massachusetts)

Near Surface Geophysics, Volume 23, Issue 2, Page 105-120, April 2025.
Abstract Degradation within a manmade earth embankment structure is often unobservable from the surface. In order to evaluate the structural integrity of earth embankment levees and dams and identify subsurface zones of weakness that may result in the future failures of such structures, various geophysical methods have been proposed as effective ...
Steven J. Maniscalco, John E. Ebel
wiley   +1 more source

Multi‐Scale Geophysical Imaging of a Hydrothermal System in Yellowstone National Park, USA

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.
Abstract Little is known about the local plumbing systems that fuel Yellowstone's famous hot springs, geysers and mud pots. A multi‐method, multi‐scale geophysical investigation was carried out in the Obsidian Pool Thermal Area (OPTA) to: (a) delineate the lateral extent of the hydrothermal area and associated surface features; (b) estimate the ...
Sylvain Pasquet, W. Steven Holbrook, Bradley J. Carr, Neil Terry, Martin A. Briggs, Carol A. Finn, Paul A. Bedrosian, Esben Auken, Jesper Pedersen, Pradip Maurya, Kenneth W. W. Sims   +10 more
wiley   +1 more source