ZOND – ZondST2D Software



ZondST2D is designed for 2D data processing and interpretation of seismic tomography by method of refracted waives. There are several options:

  • Ground profiles;
  • Water surface;
  • Downhole;
  • Crosshole.

Software is divided into two main modules. The first module is used to determine the travel time (correlation). The second module is used to solve direct and inverse problems of seismic tomography.
For processing of seismograms, special interface was developed which is designed to simplify and automate the process of determining the travel time. Foundation focuses on a variety of ways to visualize and access to frequently used functions.

To solve the direct problem of ray tracing a special algorithm of graph theory is used (Shortest path’s method). This algorithm is fast and has controlled accuracy of calculations.

ZondST2d uses a simple and understandable data format that allows to easily combine different observation systems, including various options for setting topography and other supporting information. Also, supported are well-known data formats.

Since the main objective is to restore the parameters of velocity profile, ZondST2d provides several options for solving the inverse problem, the most important of which are: the smoothing inversion – for smooth, block for block and focusing, for piecewise smooth distribution of the velocity parameters with depth.

During software development the special focus was put on the integration of apriori information. Due to the equivalence of inverse geophysical problems, the quality of the results depends on the amount of apriori data. In ZondST2d there are options for weights measurements, fixing and setting limits to the changes of individual cell’s properties, using a priori model as reference for the inversion. In addition, the program has implemented robust evaluation framework of the noise component. It is also possible to import and display the results of measurements by other methods and borehole data, which contributes to a more integrated approach to data interpretation.

Screenshot of the ZondSt2D Software

ZOND Software Package for data processing, analysis and interpretation

Potential Methods:

ZondMag2D 2D gravity and magnetic data interpretation (versions Ground, Airborne)
ZondPGM 2D gravity and magnetic data interpretation in polygonal way
ZondMag3D 3D gravity and magnetic data interpretation
ZondSP2D 2D electric self-potential data interpretation
ZondSP2Dp 2D electric self-potential data interpretation in polygonal way


Geometrical EM Sounding and Profiling:

ZCGViewer Calculation and visualization of electric resistivity profiling graphic maps and apparent resistivity maps (for different arrays)
ZondIP1D VES and VES-IP 1D data interpretation
ZondHED1D VES 1D data interpretation with induction effect calculation
ZondRes2D Resistivity + IP 2D data interpretation (versions Land, Marine, Borehole)
ZondRes2Dp Resistivity + IP 2D data interpretation in polygonal way (versions Land and Borehole)
ZondRes3D Resistivity + IP 3D data interpretation (versions Land, Marine, Borehole)
ZondCHT Resistivity, IP and EM logging 2D data interpretation (specialized for borehole measurements)


Induction EM Sounding:

Natural Source:
ZondMT1D MT (AMT, RMT) 1D data interpretation
ZondMT2D MT (AMT, RMT) 2D data interpretation




 Control Source (Frequency Domain):
ZondVMD1d FDEM sounding with vertical magnetic source dipole 1D data interpretation
Nemfis1D Electromagnetic scanner (Nemfis) 1D data interpretation


Control Source (Time Domain):
ZondTEM1D TDEM sounding 1D data interpretation for source loop and electric dipole




ZondST2D Seismotomography 2D data interpretation
ZondST3D Seismotomography 3D data interpretation





SectionEditor Software for geological –geophysical section creation
BHEditor The software for lithological columns creation
Z3DModView Software for 3D visualization of 2D inversion results
  • Download PDF FileDownload ZondST2D Specifications
  • Download PDF FileDownload ZOND Package Specifications

Related Products

The ZOND Software Package
The ZOND Software Package
A software package for near surface geophysics and seismic data interpretation