GeoTomCG can process and display 2-D and 3-D crosshole or VSP seismic or radar data. S and R indicate source and receiver positions, respectively. The crosshatch pattern indicates areas with few raypaths. The investigators reported that the seismic velocities were consistent with results obtained by other geophysical methods.
TomTime provides automatic picking (and manual repicking if necessary) of traveltimes and amplitudes for common seismograph and crosshole radar waveform files. Output can be read by the 3-D tomographic program GeoTomCG. The user can choose whether output files provide times and amplitudes, or just times.