Seismic software

ReflexW - Processing and interpretation software
for seismic and GPR data

ReflexW covers the complete range of data processing for ultrasound, seismic and GPR data. It allows the handling of different source and sensor geometries for surface reflection and refraction, downhole and borehole tomography as well as combinations of borehole and surface measurements for near surface applications.

Different modules can be chosen depending on specific requests:

  • 2D-data analysis (data import, picking of arrivals, processing possibilities, CMP processing, velocity adaption etc.)
  • Wave propagation modelling
  • 3D-data interpretation (3D-cube display etc.)

 

ReflexW 1

2D-data analysis: Picking the first arrivals using different methods (manual, semiautomatic, automatic picking)

ReflexW 2

CMP reflection processing


SeismoCross - Processing and interpretation
software for seismic crosshole testing

The software is used to process seismic crosshole testing data obtained after ASTM4428 and to output results. Seismic data can be sorted and edited and traveltimes can be determined. It is possible to implement the deviation of the boreholes. Different automatic or manual methods are available to pick the first arrivals. If a shear wave source with two different orientations has been used the data with different polarization can be overlaid for a more accurate S-wave picking.

 

SeismoCross 1

Interpretation of crosshole seismic data using two different S-wave polarizations

SeismoCross 2

3D-view of boreholes allows a visualization of shots and receivers


GeotomCG - 2D/3D tomography traveltime inversion software

GeoTomCG is a 2D/3D tomographic inversion program for traveltime and amplitude data sets. Source-to-receiver traveltimes can be analyzed to calculate velocities or attenuation coefficients. It is also possible to specify anisotropy for each point of the grid. Raypaths can be straight or curved. Versatile constraints allow site information to influence the inversion and provide more reliable results.

GeoTomCG provides graphical displays of velocities, raypath densities and other parameters such as data quality and residual error to support the reliability of the results. The output are 3D numerical results and 2D slices of the 3D grid as ASCII files that can be read by commercial 3D and 2D visualization software.

 

GeotomCG 1

Setting of inversion parameters

GeotomCG 2

Displayed 2D model of seismic velocities after inversion


Rayfract® - Seismic refraction tomography software

The seismic refraction tomography software allows reliable imaging of subsurface velocity structure including faults, strong lateral velocity variation and other velocity anomalies. 

The smooth inversion tomographic method is based on physically meaningful modelling of seismic first break energy refraction, transmission and diffraction. A smooth initial 1D gradient model is determined automatically directly from the traveltime data. The initial model is then refined with true 2D WET Wavepath Eikonal Traveltime tomography, no need to map traveltimes to refractors. To display data SURFER software is required.

 

Rayfract 1

Raypath coverage

Rayfract 2

Inversion result


ParkSEIS© - Software for MASW analysis

ParkSEIS© generates a shear-wave velocity profile by analyzing fundamental-mode Rayleigh-type seismic surface waves.

ParkSEIS© provides the comprehensive tools to process data acquired through active and passive MASW (as well as refraction) surveys for:

  • shear-wave velocity (VS) profiles (1D, 2D, and depth slice)
  • back scattering analysis (BSA) for anomaly detection (voids, tunnels, boulders, weak zones etc.)
  • common-offset sections for quick evaluation of subsurface conditions
  • modeling MASW seismic records and dispersion curves.

Yet, the traditional approach of the fundamental-mode (M0) inversion provides an excellent outcome under most common overburden/bedrock settings, and can provide a 1st-degree approximation of other more complex settings.  ParkSEIS© enables the user to utilize this most reliable approach.

 

Parkseis 1

Modeling dialog window

Parkseis 2

Inversion result: 2D shear wave velocity cross section