Format
ASEG-GDF2- Data Definition File
Summary
- Name
- ASEG-GDF2- Data Definition File
- Identifiers
- PUID: fmt/1593
- Format type
- Text (Structured)
- Description
- ASEG-GDF2 (Australian Society of Exploration Geophysicists General Data Format Revision 2) is a data standard for the exchange and archive of geophysical data. Its primary purpose is to provide a consistent and self-documenting method for exchanging and archiving geophysical data between organisations with different hardware and software systems. For data to comply with the standard, it must be stored as a set of related ASCII files, which must include the following four filetypes as a minimum: File1.DAT, survey.DES, survey.DFN and survey.MET. The .dfn files enable the writing of code to enable to recovery of the geophysical data fields and their associated formats.
- Note
- https://www.aseg.org.au/sites/default/files/pdf/ASEG-GDF2-REV4.pdf
- File extensions
-
dfn - Source
- National Library of Australia / National Library of Australia
Internal signatures
ASEG-GDF2- Data definition file
- Note
- BOF Absolute from beginning of file, magic bytes: DEFN EOF Absolute from beginning of file, magic bytes: Export ..
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
4445464E- Endianness
- Big-endian
- Min Frag Length
- Absolute from EOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
4578706F72740D0A- Endianness
- None
Changelog
-
Added in V101
- Release date
- 15 February 2022
ASEG-GDF2 Data Definition File: Signature researched and samples provided by The National Library of Australia.
ASEG-GDF2 Data Definition File: Full entry added. Submitted by The National Library of Australia.