Results 71 to 80 of about 2,752 (220)

Seismic microzonation maps of Phrae city, Northern Thailand

Geomatics, Natural Hazards & Risk, 2019
A case study using shear wave velocity (Vs) data obtained from seismic multi-channel analysis of surface wave (MASW) studies was used to evaluate site conditions in Phrae City, Northern Thailand.
Thanop Thitimakorn
doaj   +1 more source

Study of the feasibility of the MASW seismic method in coal prospecting: a study based on a conceptual model for the Candiota mine, southern Brazil [PDF]

REM: International Engineering Journal
The main coal reserves in Brazil are located in the southern region, where the most important coalfield, including the Candiota mine, is found. The mineral exploration and mine planning programs of the companies mining these coal deposits are generally ...
Lucas Rosso Lopes, Marcus Vinícius Aparecido Gomes de Lima, Randell Alexander Stephenson   +2 more
doaj   +1 more source

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

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

The Estimation of Shear Wave Velocity for Shallow Underground Structures in the Central Himalaya Region of Nepal

Geosciences
A subsurface investigation was conducted to assess the suitability of a site for potential tunnel construction, focusing on the determination of shear wave velocities (Vs) in subsurface materials.
Umesh Jung Thapa, Satish Paudel, Umesh Chandra Bhusal, Hari Ghimire, Shyam Sundar Khadka   +4 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

Application of MASW in the South Iceland Seismic Zone

, 2018
Multichannel Analysis of Surface Waves (MASW) is a seismic exploration method to evaluate shear wave velocity profiles of near-surface materials. MASW was applied at seven locations in or close to the South Iceland Seismic Zone, providing shear wave ...
Ólafsdóttir, Elin Ásta,, Sigurður Erlingsson, Bessason, Bjarni,, Elín Ásta Ólafsdóttir, Bjarni Bessason, Erlingsson, Sigurdur,   +5 more
core   +1 more source

Estimation of bedrock depth for a part of Garhwal Himalayas using two different geophysical techniques

Geoscience Letters, 2018
It has now been well established that the depth of bedrock is a key parameter in assessing the impact of local site conditions on seismic hazard analysis.
Ritu Raj Nath, Gautam Kumar, M. L. Sharma, S. C. Gupta   +3 more
doaj   +1 more source

An Ensemble Method for Soil Parameter Prediction Based on Multisource Data Fusion

Advances in Civil Engineering
Site investigation is crucial in geotechnical engineering. The cone penetration test (CPT) and the multichannel analysis of surface waves (MASWs) are widely used as geotechnical and geophysical methods, respectively.
Mingyuan Wang, Shaoxiang Zeng, Zuguo Zhang, Songting Chen, Jun Wang   +4 more
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