{
 "id": "aseg-gdf2-data-definition-file",
 "name": "ASEG-GDF2- Data Definition File",
 "category": "text",
 "identifiers": {
  "extensions": [
   "dfn"
  ],
  "puid": [
   "fmt/1593"
  ],
  "wikidata": [
   "Q111512376"
  ],
  "magic": [
   {
    "offset": 0,
    "hex": "4445464e",
    "notes": "ASEG-GDF2- Data definition file"
   }
  ],
  "signatures": [
   {
    "name": "ASEG-GDF2- Data definition file",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "4445464e"
     },
     {
      "position": "eof",
      "offset": 0,
      "pattern": "4578706f72740d0a"
     }
    ]
   }
  ]
 },
 "status": "unknown",
 "summary": "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.",
 "projects": [
  {
   "name": "PRONOM fmt/1593",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/fmt/1593",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q111512376",
   "url": "https://www.wikidata.org/wiki/Q111512376",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-20",
 "aliases": [],
 "structure": [],
 "parsers": [],
 "tools": [],
 "conversions": [],
 "samples": [],
 "claims": [],
 "verification": []
}