File Extension Library

.H77T File Extension

  • Developer by: National Geophysical Data Center
  • Category: Data Files
  • Format: Text

What are .H77T files and how to open them?

Can't open .H77T file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .H77T file.

What is a .H77T file extension?

.H77T file extension is created by National Geophysical Data Center. .H77T has been classified as Data Files. The format of .H77T file is Text.

.H77T is MGD77T Header File

Header file created and used by GEODAS ReFormat to MGD77T, a program used to format geophysical data into the Marine Geophysical Data Exchange (MGD77T) format; contains data that documents the content and structure of the data contained in the associated .M77T data file; includes the survey ID, format, ship name, country platform, project funding date, and navigation instrument.

M77T data and H77T files are created from raw data collected by marine researchers using InfoBank, a structured information storage scheme of databases and software. The raw data is collected by researchers studying underwater depth of lake and ocean floors, which is known as bathymetry. A M77T and H77T file, along with other metadata files, are used to transmit data to and from a data center for analysis.

The H77T file will bear the same name as the associated M77T file. If the M77T file is named j295gb.m77t, the H77T file is named j295gb.h77t.

NOTE: The GEODAS ReFormat to MGD77T is no longer available for download.

How to fix problems with .H77T files

  1. You need to update the application that you normally use to open .H77T files. Only the latest version of the software supports the current .H77T file format
  2. You need to check the .H77T file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)