Time‐dependent recovery of microcrack damage and seismic wave speeds in deformed limestone
, 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
Seismic properties of the crust and uppermost mantle of North America [PDF]
Seismic refraction profiles for the North American continent were compiled. The crustal models compiled data on the upper mantle seismic velocity (P sub n), the crustal thickness (H sub c) and the average seismic velocity of the crystalline crust (V sub ...
Braile, L. W. +3 more
core +1 more source
Forests as a natural seismic metamaterial: Rayleigh wave bandgaps induced by local resonances
Scientific 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
Harnessing multi-layered soil to design seismic metamaterials with ultralow frequency band gaps
Materials & Design, 2019 Phononic metamaterials are capable of manipulating mechanical wave propagation in applications ranging from nanoscale heat transfer to noise and vibration mitigation. The design of phononic metamaterials to control low-frequency vibrations, such as those
Yanyu Chen +4 more
doaj +1 more source
Shear wave structure of a transect of the Los Angeles basin from multimode surface waves and H/V spectral ratio analysis [PDF]
, 2020 We use broad-band stations of the ‘Los Angeles Syncline Seismic Interferometry Experiment’ (LASSIE) to perform a joint inversion of the Horizontal to Vertical spectral ratios (H/V) and multimode dispersion curves (phase and group velocity) for both ...
Beroza, Gregory C. +3 more
core
Great East Japan Earthquake, JR East Mitigation Successes, and Lessons for California High-Speed Rail, MTI Report 12-37 [PDF]
, 2015 California and Japan both experience frequent seismic activity, which is often damaging to infrastructure. Seismologists have developed systems for detecting and analyzing earthquakes in real-time.
Edwards, Frances, Goodrich, Daniel C.
core +1 more source
, 2020 The cancellation of noise from terrestrial gravity fluctuations, also known as Newtonian noise (NN), in gravitational-wave detectors is a formidable challenge. Gravity fluctuations result from density perturbations associated with environmental fields, e.
Badaracco, F +11 more
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DETERMINATION OF COORDINATES OF SEISMIC WAVE SOURCE BY AMPLITUDE METHOD OF PASSIVE LOCATION
Геодинамика и тектонофизика, 2015 The paper presents results of the mathematical synthesis of the method of passive location of a seismic wave source. The method employs measurements of regular attenuation of seismic oscillation amplitudes.
Vasily D. Syten’ky
doaj +1 more source
Fe alloy slurry and a compacting cumulate pile across Earth's inner-core boundary
, 2019 Seismic observations show a reduced compressional-wave gradient at the base of the outer core relative to the preliminary reference Earth model and seismic wave asymmetry between the east-west hemispheres at the top of the inner core.
Dygert, Nick +3 more
core +1 more source
Tight sandstone fluid detection technology based on multi-wave seismic data
Open GeosciencesThe SX area of the Ordos Basin in China is characterized by small thickness and considerable lateral variation of the reservoir, and high heterogeneity. It is difficult to identify gas and water by conventional P-wave seismic data without fully utilizing
Yutan Dou +12 more
doaj +1 more source