Results 61 to 70 of about 6,480 (255)

Open-Source MASW Inversion Tool Aimed at Shear Wave Velocity Profiling for Soil Site Explorations

Geosciences, 2020
The shear wave velocity profile is of primary interest for geological characterization of soil sites and elucidation of near-surface structures. Multichannel Analysis of Surface Waves (MASW) is a seismic exploration method for determination of near ...
Elin Asta Olafsdottir, Sigurdur Erlingsson, Bjarni Bessason   +2 more
doaj   +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  

Subsurface Characterization of Malaysian Hemic Peat and Soft Clays Using CPTu and MASW

IOP Conference Series: Earth and Environment, 2023
Geotechnical engineers practice a variety of in-situ investigation techniques to comprehensively characterize peat soil properties. Peat soil is a challenging soil characterized by its high water content, organic content, and low strength, making its ...
A. Zainorabidin, K. Basri, A. Salikin, M.J. Zainal, K. A. Ang, E. Wassenaar, P. P. Rahardjo, R. Nazir   +7 more
semanticscholar   +1 more source

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

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

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

Geoelectric versus MASW for geotechnical studies

Journal of Earth System Science, 2019
We explore the role of non-invasive multi-electrode electrical resistivity imaging (ERT) and induced polarisation imaging (IPI) as an alternative to multichannel analysis of surface waves (MASW) for geotechnical site characterisation in view of their higher near-surface spatial resolution.
Rambhatla G Sastry, Sumedha Chahar
openaire   +2 more sources

Application of seismic refraction and MASW methods for investigating the Spillway Fault trace along the western side of the Aswan High Dam, Egypt

Acta Geodaetica et Geophysica
An earthquake of local magnitude ML = 4.6 occurred on November 7, 2010, 4.5 km northwest of the Aswan High Dam on the Spillway Fault. In the Aswan metropolitan region this earthquake was felt intensely.
Ahmed Hamed, R. E. Fat-Helbary, Abdel-Monem Mohamed, K. El-Faragawy, Ahmed Abd El Gaber, Ahmed M. Meneisy   +5 more
semanticscholar   +1 more source