scholarly journals A Co-offset GPR Data Inversion Based on Ray Theory

2021 ◽  
Vol 660 (1) ◽  
pp. 012047
Author(s):  
Meiqi Xue ◽  
Sixin Liu ◽  
Qi Lu ◽  
Hongqing Li ◽  
Yuanxin Wang
Keyword(s):  
Ray Theory ◽  
Data Inversion

Tomographic inversion of measured cross-correlation functions of ocean noise in shallow water using ray theory

2016 ◽  
Vol 62 (4) ◽  
pp. 436-446 ◽  
Author(s):  
V. V. Goncharov ◽  
A. S. Shurup ◽  
O. A. Godin ◽  
N. A. Zabotin ◽  
A. I. Vedenev ◽  
...  
Keyword(s):  
Shallow Water ◽  
Correlation Functions ◽  
Cross Correlation ◽  
Ray Theory ◽  
Tomographic Inversion ◽  
Ocean Noise

Time-Domain Analysis of SOFAR Propagation in Low-Latitude Sea Area by Wave Theory and Ray Theory

1995 ◽  
Vol 34 (Part 1, No. 5B) ◽  
pp. 2940-2942
Author(s):  
Shinichi Imayoshi ◽  
Toshio Tsuchiya ◽  
Toshiaki Kikuchi ◽  
Akio Hasegawa
Keyword(s):  
Time Domain ◽  
Wave Theory ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Ray Theory ◽  
Low Latitude ◽  
Sea Area

Wave action on currents with vorticity

1999 ◽  
Vol 386 ◽  
pp. 329-344 ◽  
Author(s):  
BENJAMIN S. WHITE
Keyword(s):  
Phase Shift ◽  
Deep Water ◽  
Current Velocity ◽  
Wave Action ◽  
Ray Theory ◽  
Wkb Method ◽  
Interaction Of Waves ◽  
New Equation ◽  
Spatially Varying

The interaction of waves on deep water with spatially varying currents may be described by a ray theory, with the wave amplitudes determined by the principle of conservation of wave action (CWA). However, all previous deep water derivations of CWA are restricted to the case of an irrotational current. In this paper, both the ray theory and CWA are derived by a WKB method without the assumption of irrotationality. Also derived is a new equation for a spatially varying phase shift which is not predicted by the usual ray theory, and which, in general, displaces the positions of the wave crests by a distance on the order of a wavelength. This phase shift, which is caused by variations of the current velocity with depth, vanishes in the irrotational case, and so is in accord with the irrotational theory.

Consequences of a Universal Cosmic-ray Theory for γ-ray Astronomy

Nature ◽  
1973 ◽  
Vol 241 (5385) ◽  
pp. 109-110 ◽  
Author(s):  
A. W. STRONG ◽  
A. W. WOLFENDALE ◽  
J. WDOWCZYK
Keyword(s):  
Cosmic Ray ◽  
Ray Theory ◽  
Γ Ray
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