Results 71 to 80 of about 2,984,023 (326)

Forests as a natural seismic metamaterial: Rayleigh wave bandgaps induced by local resonances

open access: yesScientific Reports, 2016
We explore the thesis that resonances in trees result in forests acting as locally resonant metamaterials for Rayleigh surface waves in the geophysics context.
A. Colombi   +4 more
semanticscholar   +1 more source

Experimental study on dynamic behavior analysis of coal and its acoustic emission response characteristics under impact failure

open access: yesDeep Underground Science and Engineering, EarlyView.
Based on acoustic emission response characteristics, it can be more accurate to identify the damage evolution process of coal under the combined dynamic and static loads, reveal the moment corresponding to coal damage, and identify the characteristics of coal failure. The research results are conducive to the further use of acoustic emission monitoring
Wei Zhang   +10 more
wiley   +1 more source

Fractional Time Derivative Seismic Wave Equation Modeling for Natural Gas Hydrate

open access: yesEnergies, 2020
Simulation of the seismic wave propagation in natural gas hydrate (NGH) is of great importance. To finely portray the propagation of seismic wave in NGH, attenuation properties of the earth’s medium which causes reduced amplitude and dispersion need to ...
Yanfei Wang, Yaxin Ning, Yibo Wang
doaj   +1 more source

Form and load transfer aspects of foundation systems: Case‐based implementation and adaptation for buildings

open access: yesDeep Underground Science and Engineering, EarlyView.
Upon conceptualization of structural behavior, foundations in terms of their form are divided into linear (1D), planar (2D), and volumetric (3D). Regarding the load transfer mechanisms, linear foundation systems are considered vector‐acting, planar foundations are divided into section and surface‐acting, and volumetric ones are recognized as block ...
Abolfazl Eslami   +4 more
wiley   +1 more source

Time‐dependent recovery of microcrack damage and seismic wave speeds in deformed limestone

open access: yes, 2015
Limestone samples were deformed up to 5% inelastic axial strain at an effective confining pressure Peff=50 MPa in the cataclastic flow regime and subsequently maintained under constant static stress conditions (either isostatic of triaxial) for extended ...
N. Brantut
semanticscholar   +1 more source

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

open access: yesDeep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza   +3 more
wiley   +1 more source

Ambient noise multimode surface wave tomography

open access: yesProgress in Earth and Planetary Science
Seismic techniques using earthquakes are powerful tools for exploring the Earth’s internal structure. However, the earthquake distribution limits the spatial resolution.
Kiwamu Nishida   +2 more
doaj   +1 more source

Surface-wave imaging with nonrandom traffic seismic sourcesKey points

open access: yesEarthquake Science
Passive surface wave imaging has been a powerful tool for near-surface characterization in urban areas, which extracts surface wave signals from ambient seismic noise and then estimates subsurface shear wave velocity by inversion of the measured phase ...
Binbin Mi, Jianghai Xia, Hao Zhang
doaj   +1 more source

Seismic Waves and the Slinky: A Guide for Teachers [PDF]

open access: yes
This teacher's guide is intended to provide suggestions on how to teach about seismic waves. It provides information on the types and properties of seismic waves and instructions for using some simple materials, especially the 'slinky', to demonstrate ...
Lawrence Braile
core   +3 more sources

Home - About - Disclaimer - Privacy