Results 51 to 60 of about 220 (174)

Unveiling Cryosphere Dynamics by Distributed Acoustic Sensing and Data‐Driven Hydro‐Thermo Coupled Simulation

Geophysical Research Letters, Volume 52, Issue 2, 28 January 2025.
Abstract As global warming continues, the Earth's cryosphere is experiencing severe degradation. This study leverages a novel combination of distributed acoustic sensing (DAS) and artificial intelligence to monitor and decipher cryospheric dynamics. We have developed an advanced time‐lapse surface wave analysis workflow to capture shear wave velocity ...
Haoyuan Sun, Feng Cheng, Jianghai Xia, Jianbo Guan, Zefeng Li, Jonathan B. Ajo‐Franklin   +5 more
wiley   +1 more source

Assess the Effectiveness of Multichannel Analysis of Surface Waves Method in Mapping Ancient Structures in Ultrashallow Aquatic Environments: The Case of Agioi Theodoroi, Greece

Archaeological Prospection, Volume 32, Issue 1, Page 35-46, January/March 2025.
ABSTRACT The present geophysical research aims to evaluate the applicability of multichannel analysis of surface waves (MASW) on mapping ultrashallow underwater ancient masonry remnants. The work presents the analysis from a single seismic line using MASW and seismic refraction tomography (SRT) methods and its corresponding electrical resistivity ...
George Kritikakis, Nikos Papadopoulos, Nikos Andronikidis, Kleanthis Simyrdanis, Theotokis Theodoulou   +4 more
wiley   +1 more source

Joint analysis of shear wave velocity from SH-wave refraction and MASW techniques for SPT-N estimation [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2014
Horizontally polarized shear wave (SH) refraction and multichannel analysis of surface wave (MASW) methods have been carried out in Hatyai City, southern Thailand, a pilot study for site classification, part of the National Earthquake Hazards Reduction
Sawasdee Yordkayhun, Chedtaporn Sujitapan, Tanit Chalermyanon   +2 more
doaj  

Application of high resolution geophysical prospecting to assess the risk related to subsurface deformationin Mexico City [PDF]

Proceedings of the International Association of Hydrological Sciences, 2015
In the eastern sector of Mexico City the sub soil consists of high contrasting sequences (lacustrine and volcanic inter bedded deposits) that favor the development of erratic fracturing in the surface causing damage to the urban infrastructure.
F. A. Centeno-Salas, F. A. Centeno-Salas, D. Carreón-Freyre, W. A. Flores-García, R. I. Gutiérrez-Calderón   +4 more
doaj   +1 more source

Acoustic Signal‐Based Deep Learning Approach and Device for Detecting Interfacial Voids in Steel–Concrete Composite Structures

Advances in Civil Engineering, Volume 2025, Issue 1, 2025.
The reliable synergy between steel and concrete is an important evaluation criterion for the safety and long‐term use of steel–concrete composite structures (SCCSs). However, it is still a great challenge to realize fast and automated interface void detection for composite structures such as towers.
Wei Tian, Hang Yuan, Xinpeng You, Hehui Zheng, Bazhou Li, Chengming Peng, Doo-Yeol Yoo   +6 more
wiley   +1 more source

Nonlinear Site Response Analysis in District XIII, Budapest

Slovak Journal of Civil Engineering
Urban seismic hazard assessments must account for local soil conditions that can significantly alter ground motion characteristics. This study presents a nonlinear one-dimensional (1D) site response analysis for four locations within Budapest’s District ...
Al-Azazmeh Ahmad, Mahler András
doaj   +1 more source

Multichannel Surface-Wave-Analysis (MASW) across the Alhama de Murcia Fault Zone

, 2021
The deep structure of the Alhama de Murcia Fault (AMF) is characterized by means of the analysis of surface waves identified in shallow high resolution seismic reflection data. Multichannel analysis of surface waves (MASW) is used to unravel the 2-D S-wave velocity model and image the depth geometry of the fault system. The study area includes segments
Handoyo, H., Alcalde, J., Martí, D., Martínez Díaz, José Jesús, Teixidó, T., Carbonell, R.   +5 more
openaire   +1 more source

Passive Multichannel Analysis of Surface Waves: A Two-Dimensional Seismic Dataset Acquired with Geophones and Distributed Acoustic Sensing at a Mineral Exploration Site in the Pilbara Region of Western Australia

Geosciences
Passive seismic surveys have attracted interest for use in many geological and geotechnical applications in the past few decades, mainly in reconstructing models of near-surface properties.
Emad Al-Hemyari, Roman Isaenkov, Pavel Shashkin, Roman Pevzner, Konstantin Tertyshnikov   +4 more
doaj   +1 more source

A probabilistic full waveform inversion of surface waves

Geophysical Prospecting, Volume 72, Issue 9, Page 3448-3473, November 2024.
Abstract Over the past decades, surface wave methods have been routinely employed to retrieve the physical characteristics of the first tens of meters of the subsurface, particularly the shear wave velocity profiles. Traditional methods rely on the application of the multichannel analysis of surface waves to invert the fundamental and higher modes of ...
Sean Berti, Mattia Aleardi, Eusebio Stucchi   +2 more
wiley   +1 more source

Methodological procedure for applying geophysics to geotechnical studies in Luanda City, Angola

Minería y Geología, 2018
The use of the surface wave’s analysis in its passive and active variants was jointly assessed by the shallow seismic refraction. It allows determining dynamic parameters from the longitudinal and transverse velocities, obtained from seismic methods. For
Maria A. Pereira de Barros da Silva, Héctor M. Fernández-Núñez, João Júnior-Baptista, Gabriela J. Pereira-Teixeira Pires   +3 more
doaj