Now showing items 1-5 of 5
Low Frequency Oscillations in A Plasma with Spatially Variable Field-Aligned Flow
(AIP Publishing, 2002-05-01)
The effects of a transverse gradient in the plasma flow velocity parallel to the ambient magnetic field are analyzed. A transverse velocity gradient in the parallel ion flow, even in small magnitude, can increase the ...
Microbend loss fiber optic direction and amplitude sensors for underwater applications
(Acoustical Society of America, 1990-07-01)
Dual purpose fiber optic microbend loss sensors have been developed for measurement of underwater acousticwave amplitudes and for detection of the direction of wave propagation. Three different construction schemes for ...
A transport-theoretic analysis of pulse propagation through ocean sediments
(Acoustical Society of America, 1982-09-01)
The reflection of pulsed acoustic plane waves from ocean sedimentary layers is studied using a stochastic transport theory originally introduced by Barabanenkov et. al. [Izv. Vyssh. Uchebn. Zaved., Radiofiz 15, 1852 (1972)]. ...
Acoustic X-wave reflection and transmission at a planar interface: Spectral analysis
(Acoustical Society of America, 2000-01-01)
The spectral structure of a three-dimensional X-wave pulse incident on a planar surface of discontinuity is examined. Introducing a novel superposition of azimuthally dependent pulsed plane waves, it is shown for oblique ...
Characterization of a nonrigid sphere using the backscattered fields of acoustic X waves
(Acoustical Society of America, 2004-06-01)
The scattering of acoustic ultra-wideband X-wave pulses by a nonrigid sphere is simulated for purposes of material identification and characterization. Using the backscattered spectrum of the X-wave pulses, a procedure is ...