Results 41 to 50 of about 1,757 (214)

Integrated geophysical assessment of a municipal waste disposal site for its geological suitability in terms of the underlain material

African Scientific Reports, 2023
Dumpsites are major sources of groundwater pollution as a result of leachates that drain out of the decomposed waste. If there are no underlain materials that could serve as a seal to stop the percolation of leachate, it finds its way to the groundwater.
Omolara A. Adenuga, Olateju A. Bayewu, Hamid T. Oladunjoye, Sofiat A. Adekoya   +3 more
doaj   +1 more source

Aged embankment imaging and assessment using surface waves [PDF]

, 2016
Rapid, non-intrusive surface wave surveys provide depth profiles from which ground models can be generated for use in earthwork condition assessment.
Bergamo, Paolo, Dashwood, Ben A.J., Donohue, Shane, Gunn, David   +3 more
core   +1 more source

Comparative analysis of Geotechnical and Geophysical Investigations for average shear wave velocity in Metro Manila

Energy Reports, 2023
Philippines is one of the most seismically active countries in Southeast Asia and records at least 20 earthquakes per day according to the PHIVOLCS. Vs30 is defined as the shear wave velocity of the upper 30-meter subsurface profile which is an important
Cris Edward Monjardin, Anthony B. Medina
doaj   +1 more source

Nondestructive testing of railway embankments by measuring multi-modal dispersion of surface waves induced by high-speed trains with linear geophone arrays

Seismica
To effectively address engineering challenges and risks, it is crucial to characterize mechanical properties of near-surface environments. The Multichannel Analysis of Surface Waves (MASW) has proven to be a valuable active seismic imaging technique by ...
José Cunha Teixeira, Ludovic Bodet, Marine Dangeard, Alexandrine Gesret, Amélie Hallier, Agnès Rivière, Audrey Burzawa, Julio José Cárdenas Chapellín, Marie Fonda, Ramon Sanchez Gonzalez, Amine Dhemaied, Joséphine Boisson Gaboriau   +11 more
doaj   +1 more source

Geomorphology Characterization of Ica Basin and Its Influence on the Dynamic Response of Soils for Urban Seismic Hazards in Ica, Peru

International Journal of Geophysics, 2018
We evaluated the influence of the geomorphology of Peru’s Ica Basin on the dynamic response of soils of the city of Ica. We applied five geophysical methods: spectral ratio (H/V), frequency-wavenumber (F-K), multichannel analysis of surface waves (MASW),
Isabel Bernal, Hernando Tavera, Wilfredo Sulla, Luz Arredondo, Javier Oyola   +4 more
doaj   +1 more source

Isolating Retrograde and Prograde Rayleigh-Wave Modes Using a Polarity Mute [PDF]

, 2016
Estimates of S-wave velocity with depth from Rayleigh-wave dispersion data are limited by the accuracy of fundamental and/or higher mode signal identification.
Gribler, Gabriel, Liberty, Lee M., Michaels, Paul, Mikesell, T. Dylan   +3 more
core   +2 more sources

Evaluating Seismic Ambient Noise Techniques for Imaging Lava Tubes on the Moon

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Detecting and characterizing lava tubes is a key objective of upcoming lunar missions. While evidence for their presence exists, their precise dimensions and depths remain uncertain. This study evaluates the potential of seismic ambient noise methods, such as seismic interferometry, H/V spectral ratios, distributed acoustic sensing (DAS), and ...
Sabrina Keil, Rok Sesko, Martin Schimmel, Heiner Igel, Philipp Reiss   +4 more
wiley   +1 more source

Enhancing fieldwork productivity in subsurface characterization: advancements in data acquisition with MASW-DS

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
The multichannel analysis of surface waves (MASW) method utilizes low-frequency surface waves to characterize the shallow subsurface layers. It is a very useful tool in geotechnical engineering for evaluating soil quality and mapping the characteristics ...
Hamdan Hamdan, George Kritikakis, Mahmoud Elsamani, Mahmoud Harb, Mohamed Abdel-Fattah, Pantelis Soupios   +5 more
doaj   +1 more source

Shallow Shear‐Wave Reflection Surveys in the Wellington Central Business District

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
Seismic reflection profiling using shear waves provides constraints on the thickness of sediments beneath the Wellington Central Business District. Standard seismic methods were modified for urban environments where limited grassed areas are available and levels of cultural noise are high.
Sam. B. Thorpe‐Loversuch, Tim. A. Stern, Wanda. R. Stratford   +2 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