{
 "schema": "ausmt-survey-metadata",
 "version": "0.1",
 "survey_id": "north-delamerian-2022-23",
 "title": "North Delamerian MT 2022-23",
 "dates": {
  "coverage": {
   "year_start": 2022,
   "year_end": 2023
  }
 },
 "abstract": "A wideband magnetotelluric profile across the northern Delamerian Orogen, South Australia,\nrunning about 348 km from the eastern shore of Spencer Gulf south east to the Victorian border.\nZonge Engineering and Research Organization acquired it for MinEx CRC with the geological surveys\nof South Australia and Victoria, as the northern half of a two profile programme, and the\nGeological Survey of South Australia released it open file through SARIG. Soundings were five\nchannel tensor measurements on Phoenix receivers with 100 m electric dipoles and three induction\ncoils, remote referenced to a neighbouring site and processed in Phoenix EMpower with the magnetic\ndeclination applied, so the tensors are referenced to true north. Measured across the 101 files\nserved: recordings of 15.4 to 77.3 hours, a median of 43.1; 82 to 107 periods, a median of 103,\nfrom 9.6e-05 s to 9533 s; and a nearest neighbour spacing of 1.85 to 7.96 km, a median of 3.62 km.",
 "subjects": [
  {
   "code": "370602",
   "scheme": "ANZSRC-FoR-2020",
   "label": "Electrical and electromagnetic methods in geophysics",
   "uri": "https://linked.data.gov.au/def/anzsrc-for/2020/370602"
  }
 ],
 "contributors": [
  {
   "name": "Zonge Engineering and Research Organization (Australia) Pty Ltd",
   "name_type": "organisation",
   "role": "DataCollector"
  },
  {
   "name": "MinEx CRC",
   "name_type": "organisation",
   "role": "Sponsor"
  },
  {
   "name": "Thiel, Stephan",
   "name_type": "person",
   "role": "ProjectLeader"
  },
  {
   "name": "Haydon, Suzanne",
   "name_type": "person",
   "role": "ProjectLeader"
  },
  {
   "name": "Geological Survey of South Australia",
   "name_type": "organisation",
   "role": "Distributor",
   "ror": "https://ror.org/0121cjp70"
  }
 ],
 "organisations": [
  {
   "name": "Geological Survey of South Australia",
   "ror": "https://ror.org/0121cjp70",
   "roles": [
    "custodian",
    "publisher",
    "distributor"
   ],
   "primary_custodian": true
  },
  {
   "name": "Zonge Engineering and Research Organization (Australia) Pty Ltd",
   "roles": [
    "data_collector"
   ]
  }
 ],
 "rights": {
  "license": "CC-BY-4.0",
  "access": "open"
 },
 "extent": {
  "bbox": {
   "west": 137.961944,
   "south": -35.340306,
   "east": 140.940223,
   "north": -33.375833
  }
 },
 "relationships": [
  {
   "identifier": "https://pid.sarig.sa.gov.au/dataset/mesac1113",
   "identifier_type": "URL",
   "relation": "IsVariantFormOf"
  },
  {
   "identifier": "https://pid.sarig.sa.gov.au/dataset/mesac477",
   "identifier_type": "URL",
   "relation": "IsSourceOf"
  }
 ],
 "attribution": {
  "custodian": "Geological Survey of South Australia",
  "custodian_ror": "https://ror.org/0121cjp70",
  "changes_made": false,
  "changes_summary": "No byte of any transfer function is changed. The only AusMT act on this material is naming: each served file is named from the identity the file itself carries rather than from the delivery's LineNo__StationNo sequence, and on three files that name is the owner's ruling of 2026-09-18 rather than the DATAID, because the DATAID there is a processing descriptor and not a station. The custodian's own DATAID is kept on the record as site_name for all three.",
  "declared_by": "Ben",
  "declared_date": "2026-09-18"
 },
 "provenance": {
  "generated": "2026-09-19T01:03:52Z",
  "generator": "ausmt/extract.build_portal 0.2.1"
 }
}