What is a .H77T file?
The .H77T file extension is associated with a specific type of header file known as an MGD77T Header File. This kind of file is specially designed to work with a program called GEODAS ReFormat to MGD77T. This program is used by scientists and researchers who study the ocean and lake floors, a field known as bathymetry. They collect various types of geophysical data from these underwater environments, and the program helps them format this data into a standardized format called MGD77T.
An .H77T file contains important information that describes the data in a corresponding .M77T data file. This includes details like the ID of the survey that collected the data, the format of the data, the name of the ship that carried out the survey, the country of the ship, the project's funding date, and the type of navigation instrument used. Essentially, the .H77T file acts as a guide or an index to understand the structure and content of the .M77T file it is associated with.
To open an .H77T file, you would typically use the GEODAS ReFormat to MGD77T program. However, it's important to note that this program is no longer available for download, which might make accessing the content of these files challenging without the proper software.
The creation of M77T and H77T files is part of a larger process involving InfoBank, a comprehensive system of databases and software designed for storing structured information. Researchers collect raw data during their studies of underwater terrains, and this data is then processed and formatted into M77T and H77T files, among others, to facilitate data exchange and analysis.
An interesting aspect of these files is their naming convention. An H77T file is named exactly like its corresponding M77T file, except for the extension. For example, if the data file is named "j295gb.m77t," the header file will be named "j295gb.h77t." This naming system helps in easily identifying which header file is associated with which data file, simplifying data management and analysis for researchers.
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