Abstract: A system and method for identifying S-wave refractions using supervirtual refraction interferometry is disclosed. The method includes receiving a seismic data set from data generated by a plurality of receivers, and calculating crosscorrelations of pairs of common receiver gathers from the seismic data set for each of the receivers. The method includes summing the crosscorrelations associated with each of a plurality of virtual ray paths, calculating a plurality of virtual refraction gathers of the summed crosscorrelations and convolving each of the virtual refraction gathers with the seismic data set. The virtual ray paths are based on each of the receivers functioning as a virtual source. The method includes summing the plurality of convolutions associated with each of the virtual ray paths and calculating a supervirtual refraction gather of the summed convolutions. The method further includes outputting the S-wave refraction from the supervirtual refraction gather.

Abstract: Computing device and method for determining primary and ghost components from S-waves recorded in near-surface conditions, wherein the S-waves are refracted or reflected from a structure in a subsurface. The method includes a step of receiving seismic data (R, V) with regard to the S-waves, wherein the seismic data includes vertical and radial components recorded with a buried three-component receiver; a step of calculating with a processor a primary component (P) and a ghost component (G) from the vertical and radial components; and a step of computing an image of a subsurface based on the primary and ghost components (P, G). The S-waves form a plane wave.

Abstract: Computing device and method for determining primary and ghost components from recorded P-waves. The method includes receiving seismic data (R, V) with regard to the P-waves, wherein the seismic data includes vertical and radial components recorded with a buried two-component receiver; calculating with a processor a primary component (P) and a ghost component (G) from the vertical and radial components; and computing an image of a subsurface based on the primary and ghost components (P, G). The P-waves form a plane wave.

Abstract: Apparatus, computer instructions and method for processing seismic data related to a subsurface of a body of water. The method includes receiving input data for a vertical direction and radial direction and/or from a hydrophone, applying a radon transform to the input data, separating primary signals from ghosts signals based on the vertical and radial components, applying an inverse radon transform to determine up-going and down-going wave fields in a time-distance domain, and separating interfering up-going and down-going wave fields that are recorded by the same receivers.

Abstract: Methods and systems for shallow shear-wave splitting analysis using receiver functions of seismic data are described. Radial and transverse receiver functions are calculating by, for example, performing cross-correlations of vertical component data with radial component data and vertical component data with transverse component data, respectively. The receiver functions are then used to determine orientation and other characteristics associated with shear waves passing through an azimuthally anisotropic layer.

Abstract: Methods and systems for separating surface wave velocity information from surface wave noise in seismic data are described. The seismic data can be comprised of irregularities in spatial sampling, non-stationarity in time and non-stationarity in frequency. The methods and systems can then be adapted to create a multi-component dip filter that removes high amplitude dispersive noise from the seismic data based on the use of slant stacking.

Abstract: Computing device and method for determining primary and ghost components from recorded P-waves. The method includes receiving seismic data (R, V) with regard to the P-waves, wherein the seismic data includes vertical and radial components recorded with a buried two-component receiver; calculating with a processor a primary component (P) and a ghost component (G) from the vertical and radial components; and computing an image of a subsurface based on the primary and ghost components (P, G). The P-waves form a plane wave.

Abstract: Apparatus, computer instructions and method for processing seismic data related to a subsurface of a body of water. The method includes receiving input data for a vertical direction and radial direction and/or from a hydrophone, applying a radon transform to the input data, separating primary signals from ghosts signals based on the vertical and radial components, applying an inverse radon transform to determine up-going and down-going wave fields in a time-distance domain, and separating interfering up-going and down-going wave fields that are recorded by the same receivers.

Abstract: Computing device and method for determining primary and ghost components from S-waves recorded in near-surface conditions, wherein the S-waves are refracted or reflected from a structure in a subsurface. The method includes a step of receiving seismic data (R, V) with regard to the S-waves, wherein the seismic data includes vertical and radial components recorded with a buried three-component receiver; a step of calculating with a processor a primary component (P) and a ghost component (G) from the vertical and radial components; and a step of computing an image of a subsurface based on the primary and ghost components (P, G). The S-waves form a plane wave.