Software

Data Processing Programs

Most data processing programs are run in a DOS or COMMAND window. Basic programs are provided with a purchase of a GDP system. Additional packages of programs are available.

Block-formatted data are reformatted (SHRED) and averaged, providing data formats used by modeling programs. The appropriate averaging program is determined by the GDP program that was used to acquire the data.

Time-series data processing programs are being developed as needed. Your questions are welcome.

CR

SHRED  [Manual PDF:121k]
RAW-file block-format data acquired by a GDP are transferred to a DOS/Windows computer for processing. The initial step is to reformat the data with the SHRED program, resulting in a spreadsheet-style FLD-file, sorted by measurement location.

CRAVG  [Manual PDF:97k]
FLD-files containing X-component E-field data are averaged with CRAVG, generating averaged data files in AVG-, S-, and Z-file formats, and plot files of individual data curves in HPGL format. Co-linear survey array data are appropriate, such as dipole-dipole.

CRRED  [Manual PDF:101k]
S-file averaged data are multi-dimensional. The CRRED program writes a choice of P-file data with a selection of data components, or plots of data curves per station, or data summary listings.

LPLOT  [Manual PDF:92k]
P-file data are used to generate line-printer formatted pseudosections. Not commonly used.

PPLOT  [Manual PDF:81k]
P-file data may contain spectral data curves. PPLOT creates "spectral pseudosections", drawing a data curve at each pseudosection plot point.

HEMAVG  [Manual PDF:112k]
FLD-files containing multiple-component data are averaged with HEMAVG, generating averaged data files in AVG-, DAT-, and Z-file formats, and plot files of individual data curves in HPGL format.

TIP  [Manual PDF:117k]
The TIP program processes sets of two-component (Ex,Ey) data generated by one to four transmitter-antenna orientations and produces tensor and vector apparent resistivity and IP phase. AVG-files produced by HEMAVG provide input data.

RPIP

SHRED  [Manual PDF:121k]
RAW-file block-format data acquired by a GDP are transferred to a DOS/Windows computer for processing. The initial step is to reformat the data with the SHRED program, resulting in a spreadsheet-style FLD-file, sorted by measurement location.

RPAVG  [Manual PDF:110k]
FLD-files containing single-frequency X-component E-field data are averaged with RPAVG, generating averaged data files in AVG-, S-, and Z-file formats. Co-linear survey array data are appropriate, such as dipole-dipole.

CRRED  [Manual PDF:101k]
S-file averaged data are multi-dimensional. The CRRED program writes a choice of P-file data with a selection of data components, or plots of data curves per station, or data summary listings.

LPLOT  [Manual PDF:92k]
P-file data are used to generate line-printer formatted pseudosections. Not commonly used.

PPLOT  [Manual PDF:81k]
P-file data may contain spectral data curves. PPLOT creates "spectral pseudosections", drawing a data curve at each pseudosection plot point.

TDIP

SHRED  [Manual PDF:121k]
RAW-file block-format data acquired by a GDP are transferred to a DOS/Windows computer for processing. The initial step is to reformat the data with the SHRED program, resulting in a spreadsheet-style FLD-file, sorted by measurement location.

TDAVG  [Manual PDF:117k]
FLD-files containing time-domain data are averaged with TDAVG, generating averaged data files in AVG- and Z-file formats. Co-linear survey array data are appropriate, such as dipole-dipole.

CSAMT

SHRED  [Manual PDF:121k]
RAW-file block-format data acquired by a GDP are transferred to a DOS/Windows computer for processing. The initial step is to reformat the data with the SHRED program, resulting in a spreadsheet-style FLD-file, sorted by measurement location.

AMTAVG  [Manual PDF:158k]
FLD-files containing CSAMT data are averaged with AMTAVG, generating averaged data files in AVG- and Z-file formats, and plot files of individual data curves in HPGL format. Data from single-frequency and harmonic acquisition GDP programs are handled, with a variety of electric and magnetic components.

AMTPLT  [Manual PDF:141k]
The utility program AMTPLT generates plots of frequency-domain data, using a logarithmic frequency axis and a linear or logarithmic axis for magnitude or phase values. Initially designed for CSAMT data, data may be plotted from any of the frequency-domain averaging programs.

HSMOOTH  [Manual PDF:21k]
The utility program HSMOOTH interpolates magnetic field magnitudes between setup centers in a CSAMT survey. The program reads a Zonge Engineering .AVG-file and replaces it with a modified .AVG-file holding the interpolated values. The original file is saved with an .AV$ extension.

AMTRED  [Manual PDF:142k]
AMTRED handles averaged CSAMT, CSHAMT, and NSAMT data files, containing data for a number of frequencies at a sequence of stations. The data may be written to data files in several formats. Various options are provided for filtering, conversion, and basic analysis.

ASTATIC  [Manual PDF:714k]
ASTATIC is a utility program for reviewing CSAMT and/or NSAMT data stored in Csavgw, Amtavg or Nsavg *.avg files. In addition to its original use for automatically calculating static corrections, Astatic has a data review option which allows manual static corrections or setting and clearing of skip flags on individual data points.

TENSORCS  [Manual PDF:219k]
TensorCS is a utility program for processing combined scalar, vector and/or tensor CSAMT data. TensorCS replaces VectorCS, since it can do both vector and tensor processing, and it replaces AMT2CR, since it estimates scalar and vector IP phase from low-frequency CSAMT electric-field data.

AMT

SHRED  [Manual PDF:121k]
RAW-file block-format data acquired by a GDP are transferred to a DOS/Windows computer for processing. The initial step is to reformat the data with the SHRED program, resulting in a spreadsheet-style FLD-file, sorted by measurement location.

NSAVG  [Manual PDF:183k]
FLD-files containing natural-source data are averaged with NSAVG, generating averaged data files in AVG- and Z-file formats, and plot files of individual data curves in HPGL format. CSAMT utility programs may be used with the output data files.

MTEDIT  [Manual PDF:943k]
Available by special order: MTEDIT is a utility program for processing and reviewing magnetotelluric data collected by Zonge receivers. In addition to its use for processing and reviewing MT data, the program may be used to refine the impedance estimates. MTEDIT reads data from Zonge time-series files, control information from either local or global control files, and antenna and board calibrate files. MTEDIT also creates a file (*.MTV) that includes all of the spectra from a single station, as well as all of the previous work on the station. MTEDIT writes apparent resistivities to an AMTAVG-format *.AVG file. MTEDIT also writes EDI formatted files for use with non-Zonge inversion programs.

TEM

SHRED  [Manual PDF:121k]
RAW-file block-format data acquired by a GDP are transferred to a DOS/Windows computer for processing. The initial step is to reformat the data with the SHRED program, resulting in a spreadsheet-style FLD-file, sorted by measurement location. TEMAVG

TEMAVG  [Manual PDF:126k]
FLD-files containing time-domain EM (TEM) data are averaged with TEMAVG, generating averaged data files in AVG- and Z-file formats, and plot files of individual soundings in HPGL format.

Streaming IP

A variety of data may be acquired with a number of different sensors, using a variety of array configurations, each requiring at least some custom processing. For example, Zonge has used a configuation with an array of electrodes in a cable towed behind a boat, with GDP measurements recorded of time, magnitude and phase. A separate data file is recorded with GPS and depth sensor measurements. The data processing procedure determines coordinates of each electrode for each GDP record, and writes a data file containing distance-along-track, resistivity, and depth values. Output data files are suitable for use by modeling programs.

Link to Applications | Environmental | Marine papers.

LAB

Data measured by a GDP are processed in a manner similar to field data. CR measurements are commonly acquired, so the CR processing programs are used.

SHRED  [Manual PDF:121k]
RAW-file block-format data acquired by a GDP are transferred to a DOS/Windows computer for processing. The initial step is to reformat the data with the SHRED program, resulting in a spreadsheet-style FLD-file, sorted by measurement location.

CRAVG  [Manual PDF:97k]
FLD-files containing X-component E-field data are averaged with CRAVG, generating averaged data files in AVG-, S-, and Z-file formats, and plot files of individual data curves in HPGL format. Electrical laboratory measurements of samples are made with the GDP CR, RPIP or TDIP acquisition programs. CRAVG, RPAVG and TDAVG averaging programs provide data files of laboratory measurements.

LABRED  [Manual PDF:96k]
Data collected during measurements of rock samples in the laboratory are averaged by the CRAVG or RPAVG program, and LABRED provides data listings and plots of Real vs Imaginary and Magnitude and Phase vs Frequency in HPGL format.

UTILITY

CCDATPRO
AVG-GDAT
CTOPO
GENERAL
PLAN-Z
ZPLOT