On surface-wave radiation from a submerged cylindrical duct

1982 ◽  
Vol 122 (-1) ◽  
pp. 339 ◽  
Author(s):  
John W. Miles
Keyword(s):  
Surface Wave ◽  
Wave Radiation ◽  
Cylindrical Duct

Finite element analysis of surface wave radiation for pavement debonding

2010 ◽  
Author(s):  
Yifeng Lu ◽  
Yinghong Cao ◽  
J. Gregory McDaniel ◽  
Ming L. Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Surface Wave ◽  
Wave Radiation ◽  
Element Analysis

Prediction of Sky and Surface Wave Radiation of a Wideband HF Antenna

2015 ◽  
Vol 14 ◽  
pp. 1149-1152 ◽  
Author(s):  
Christopher Djoma ◽  
Muriel Darces ◽  
Marc Helier
Keyword(s):  
Surface Wave ◽  
Wave Radiation

Using Seismic Source Parameters to Model Frequency-Dependent Surface-Wave Radiation Patterns

2020 ◽  
Vol 91 (2A) ◽  
pp. 992-1002 ◽  
Author(s):  
Boris Rösler ◽  
Suzan van der Lee
Keyword(s):  
Surface Wave ◽  
Moment Tensor ◽  
Source Parameters ◽  
Love Waves ◽  
Wave Radiation ◽  
Radiation Patterns ◽  
Frequency Dependent ◽  
The Earth ◽  
Rayleigh And Love Waves ◽  
Source Mechanisms

Abstract The excitation of surface waves depends on the frequency-dependent eigenfunctions of the Earth, which are determined numerically. As a consequence, radiation patterns of Rayleigh and Love waves cannot be calculated analytically and vary with source depth and with frequency. Owing to the importance of surface-wave amplitudes for inversions of source processes as well as studies of the elastic and anelastic structure of the Earth, assessing surface-wave radiation patterns for different source mechanisms is desirable. A data product developed in collaboration with the Incorporated Research Institutions for Seismology (IRIS) Consortium provides visualizations of the radiation patterns for Rayleigh and Love waves for all possible source mechanisms. Radiation patterns for known earthquakes are based on the moment tensors reported by the Global Centroid Moment Tensor project. These source mechanisms can be modified or moment tensor components can be chosen by the user to assess their effect on Rayleigh- and Love-wave radiation patterns.

Short-wave radiation generation by strip electron beams in the surface-wave excitation mode

2016 ◽  
Vol 61 (5) ◽  
pp. 501-509
Author(s):  
N. S. Ginzburg ◽  
A. M. Malkin ◽  
V. Yu. Zaslavskii ◽  
I. V. Zheleznov ◽  
A. S. Sergeev
Keyword(s):  
Surface Wave ◽  
Electron Beams ◽  
Short Wave ◽  
Wave Radiation ◽  
Wave Excitation ◽  
Short Wave Radiation ◽  
Excitation Mode ◽  
Radiation Generation

Surface-wave constraints on the August 1, 1975, Oroville earthquake

1977 ◽  
Vol 67 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Robert S. Hart ◽  
Rhett Butler ◽  
Hiroo Kanamori
Keyword(s):  
Surface Wave ◽  
Rayleigh Waves ◽  
Body Wave ◽  
Source Parameters ◽  
The Body ◽  
Wave Radiation ◽  
Spectral Amplitude ◽  
Surface Wave Magnitude ◽  
Long Period ◽  
Short Period

abstract Observations of Love and Rayleigh waves on WWSSN and Canadian Network seismograms have been used to place constraints upon the source parameters of the August 1, 1975, Oroville earthquake. The 20-sec surface-wave magnitude is 5.6. The surface-wave radiation pattern is consistent with the fault geometry determined by the body-wave study of Langston and Butler (1976). The seismic moment of this event was determined to be 1.9 × 1025 dyne-cm by both time-domain and long-period (T ≥ 50 sec) spectral amplitude determinations. This moment value is significantly greater than that determined by short-period studies. This difference, together with the low seismic efficiency of this earthquake, indicates that the character of the source is intrinsically different at long periods from those aspects which dominate the shorter-period spectrum.

scholarly journals Dielectric-induced surface wave radiation loss

2020 ◽  
Vol 476 (2236) ◽  
pp. 20190859
Author(s):  
Tobias Schaich ◽  
Anas Al Rawi ◽  
Trevor Morsman ◽  
Mike Payne
Keyword(s):  
Experimental Data ◽  
Surface Wave ◽  
Wave Mode ◽  
Wave Radiation ◽  
Mode Matching ◽  
Full Wave ◽  
Matching Technique ◽  
Surface Waveguide ◽  
Conducting Sheet

We investigate a model which shows how the introduction of a perturbing dielectric close to an electromagnetic surface wave leads to radiation away from the surface through the dielectric. This resembles a surface waveguide passing through a wall or being deployed underground. Our theory, which is based on the mode-matching technique, allows quantitative determination of losses from a bound surface wave mode up to the point of its complete extinction. For a surface wave supported by a coated, conducting sheet the attenuation due to the perturbing dielectric is calculated for a number of frequencies, permittivities of the perturbation and separations between the sheet and the perturbing dielectric. The accuracy of our results is verified by simulation of the system with a full-wave numerical solution. Finally, we report experimental data of perturbed surface waves on a cable, which are in qualitative agreement with our model.

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