GEODAS MGD77T marine geophysical data
File type: Various data file
An m77t file extension identifies data in the MGD77T Marine Geophysical Data Exchange Format.
An m77t file contains marine geophysical measurements used by GEODAS.
File type category:
Various data file
Date updated: October 5, 2026
Record marked as obsolete and not updated for a long time.
The MGD77T Marine Geophysical Data Exchange Format is an exchange format for marine geophysical survey data, including bathymetry, magnetic measurements, and gravity measurements.
The format is used by GEODAS, software developed for working with marine geophysical data. An m77t file stores the survey data in a form that GEODAS can use for viewing and processing.
GEODAS and the MGD77T format are obsolete, so the original software may no longer be available or suitable for current systems.
Open an m77t file with the original GEODAS software, if an appropriate copy is available. GEODAS is obsolete and may not run on modern systems.
Because MGD77T data is intended as an exchange format, a text editor may be able to display the file's contents, but it will not interpret the marine geophysical measurements or provide GEODAS features.
Conversion requires software that understands the MGD77T data fields and can export them to another marine geophysical or tabular format.
Keep the original file when converting, because exporting the data may change its structure or discard format-specific information.
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