Geogiga Surface 8.1 — Surface Wave Data Processing Software

SURFACE is able to process active surface waves with SASW and MASW. The dispersion spectrum can be calculated in F-K, F-V, or F-P domain, where the fundamental and high-mode dispersion curves are interactively picked. The robust forward modeling and the global genetic algorithm (GA) assure the quick convergence of inversion.

Features

Load all shots simultaneously, browse and select any record for QC

Mute noise in time domain and select traces for dispersion analysis

Test the apparent velocity of surface waves on seismic data

Check frequency range with amplitude spectrum analysis

Process active surface waves with SASW and MASW

Calculate dispersion spectrum in F-K, F-V, or F-P domain with high resolution FK method

Interactively pick fundamental and high-mode dispersion curves with a spectrum graph

Automatically build an initial model and interactively define the model

Allow fixed layers in inversion

Handle both Rayleigh and Love wavesnew

Specify Poisson's ratio and density used in inversion

Jointly invert fundamental and high-mode dispersion curves with genetic algorithm (GA)

Auto select and invert all the dispersion curves at one timenew

Interactively pause and resume or stop the inversion procedure

Calculate apparent Vs, Vs30(or Vs100), depth-weighted velocities, and SPT-N valuesnew

Plot dispersion and velocity curve at a single location

Compare different dispersion and velocity curves at the same location

Display the dispersion curves and velocity section along a line

Plot well data on the velocity sectionnew

Output velocity section with contours and editable lithologic symbols

Screenshots

Calculate dispersion spectrumin F-K, F-V, and F-P domain