The information of the reflected wave is separated from full waveform acoustic log by using wave field separating technique and its image is displayed.
Five reflected waves which are reflected compressional wave, reflected converted wave, W 1, W 2 and W 3 were observed at the depth of 1 210 m in the fracture dominating direction in Shun 5 Well.
Two new methods, namely, the multi-scale semblance method and the modified ridgelet transform. , are introduced in the processing of the reflected waves.
In the regions of the east plain, the geological conditions of the surface vary little, so the effective reflected waves in the original seismic data are relatively stable, the static correction problem and all kinds of disturbance are not much obvious and the Signal-to-Noise Ratio (SNR) is relatively higher. A set of methods for processing the relatively stable seismic data have been established in the routine processing.
This circumstance is associated with the fact that the temperature behind the reflected wave is significantly higher than that behind the incident wave.
The problem concerning reflection of a blast wave from a surface was also considered in [3, 4], wherein a solution in the region behind the reflected wave was obtained at initial times.
The density distribution behind the reflected shock wave was measured experimentally, and also the shape of the reflected wave at different instants of time.
The presence of a prominent reflection wave in the arterial pulse-wave profile of such patients signifies that adjuvant nitrate therapy may prove effective in lowering pulse pressure.
We find presentations for the irreducible crystallographic complex reflection groupsW whose linear part is not the complexification of a real reflection group.
The presentations are given in the form of graphs resembling Dynkin diagrams and very similar to the presentations for finite complex reflection groups given in [2].
We give explicit systems of generators of the algebras of invariant polynomials in arbitrary many vector variables for the classical reflection groups (including the dihedral groups).
The parameters of the reflected waves are determined and the amplitude and impulse attenuation coefficients are measured as functions of the permeability of the barrier.
This was based on the derivation of averaged equations of the interaction of two waves, the region of interaction of the incident and reflected waves being treated as a self-similar solution of these equations.
The equation describes the evolution of fast and slow Biot-Frenkel longitudinal acoustic waves propagating in both directions and allows one to analyze the reflected waves and their interaction.