Results 81 to 90 of about 2,693,775 (331)
RESEARCH ON THE DIRECTIVITY RESPONSE OF THE SPHERICAL PENDULUM SEISMOGRAPH
Jixie qiangdu, 2022 To solve the problem that the Houfeng Seismograph’s directional function’s historical record was generally questioned. The analysis concludes that the spherical pendulum seismic measurement scheme may be a feasible restoration scheme with Rayleigh wave ...
LIU Zhao +4 more
doaj
Seismic characteristics of the 15 February 2013 bolide explosion in Chelyabinsk, Russia
Earth and Planetary Physics, 2018 The seismological characteristics of the 15 February 2013 Chelyabinsk bolide explosion are investigated based on seismograms recorded at 50 stations with epicentral distances ranging from 229 to 4324 km.
Zhi Wei +4 more
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Meikuang Anquan, 2023 Coal mine safety accidents are very likely to occur when the roadway is excavated through tectonic areas such as collapsed pillars. In this paper, Rayleigh wave technology is used to carry out advance detection in heading face of No.8 joint roadway in ...
Mingkun LUO +6 more
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Resonance Expansions and Rayleigh Waves [PDF]
Mathematical Research Letters, 2001 The author studies expansions of solutions of the wave equation in a compact set with initial data supported in the same set. He considers the general framework of the ``black box scattering'' introduced by Sjöstrand and Zworski. In particular, this includes the classical case of scattering by obstacle with Dirichlet or Neumann boundary conditions and ...
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Rayleigh-Wave-Attenuation Measurements [PDF]
The Journal of the Acoustical Society of America, 1962 An experimental method has been developed for measuring attenuation of Rayleigh waves propagating in metal plates. Rayleigh waves are generated at one end of a plate using either a y-cut crystal or an x-cut crystal mounted on a Lucite wedge. The waves propagate along the plate, the lower part of which is immersed in water. Mode conversion occurs at the
W. E. Lawrie, A. M. Baumanis
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Versatile Control of Spectral Emissivity in Mid‐Infrared Metasurfaces via Silicon Microstructuring
Advanced Optical Materials, EarlyView.A family of metasurfaces is obtained very simply, solely through the structuration of a single‐crystal silicon surface, without any other material involved. Based on the infrared plasmonic behavior of highly doped silicon, further control of surface topography by micro‐ and nano‐structuration is found to enable an avenue of options toward tailoring its
Kirollos Ernest Matta +9 more
wiley +1 more source
Superradiant light scattering from a moving Bose-Einstein condensate [PDF]
, 2003 We investigate the interaction of a moving BEC with a far detuned laser beam. Superradiant Rayleigh scattering arises from the spontaneous formation of a matter-wave grating due to the interference of two wavepackets with different momenta. The system is
Bonifacio, R. +6 more
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Multipolar Resonances in Electro‐Optic Metasurfaces with Moderate Refractive Index
Advanced Photonics Research, EarlyView.Electro‐optic nanoantennas with moderate refractive indices of 2.3 to 3.0 are numerically shown to sustain strong multipolar resonances, enabling efficient light confinement and EO tuning. Multipolar modes of even parity are most sensitive to variations in the refractive index.
Viktoriia E. Babicheva +1 more
wiley +1 more source
Sensors, 2020 In this paper, the interaction of a broadband Rayleigh wave generated by a laser and an artificial rectangular notch is analyzed theoretically and experimentally.
Haiyang Li +3 more
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“Forbidden” planes for Rayleigh waves [PDF]
Quarterly of Applied Mathematics, 2002 Summary: We discuss the existence of ``forbidden'' planes, on which Rayleigh waves cannot propagate. A mathematical model for anisotropic materials possessing ``forbidden'' planes is constructed, and an example of transversely isotropic material having ``forbidden'' planes is presented.
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