{
 "schema": "ausmt-survey-metadata",
 "version": "0.1",
 "survey_id": "bollards-lagoon-2008",
 "title": "Bollards Lagoon 2008",
 "dates": {
  "coverage": {
   "year_start": 2008,
   "year_end": 2008
  }
 },
 "abstract": "A broadband magnetotelluric line over Bollards Lagoon in the southern Cooper Basin of South\nAustralia. Thirteen remote-referenced tensor soundings were\nacquired along a single 23.9 km north to south line at a mean 2.0 km spacing between 18 January\nand 18 February 2008 by Quantec Geoscience Pty Ltd for Eden Energy Ltd, as the GEL 169 grid of\nits Cooper MT project AU00039L. The target was basement depth and any conductive zone at 3 to\n5 km that might host a geothermal reservoir under Cooper and Eromanga Basin cover. Each site recorded five channels on a Quantec RT-130 logger with 100 m dipoles in\nan L array and three induction coils, against a simultaneous remote reference. AusMT serves all\nthirteen files byte-identical to the delivery, carrying impedance and tipper with variances on\n42 to 44 periods from 4.2 ms to 1311 s. Two declare a frame their own sensor azimuths\ncontradict; README.md states what that affects.",
 "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": "Quantec Geoscience Pty Ltd",
   "name_type": "organisation",
   "role": "DataCollector"
  },
  {
   "name": "Quantec Geoscience Pty Ltd",
   "name_type": "organisation",
   "role": "DataCurator"
  },
  {
   "name": "Eden Energy Ltd",
   "name_type": "organisation",
   "role": "Sponsor"
  },
  {
   "name": "Retallick, T.",
   "name_type": "person",
   "role": "ProjectLeader"
  },
  {
   "name": "Stockill, J.",
   "name_type": "person",
   "role": "DataCurator"
  },
  {
   "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
  }
 ],
 "rights": {
  "license": "CC-BY-4.0",
  "access": "open"
 },
 "extent": {
  "bbox": {
   "west": 140.425452,
   "south": -28.955867,
   "east": 140.500364,
   "north": -28.751013
  }
 },
 "relationships": [
  {
   "identifier": "https://pid.sarig.sa.gov.au/dataset/mesac1113",
   "identifier_type": "URL",
   "relation": "IsVariantFormOf"
  },
  {
   "identifier": "https://pid.sarig.sa.gov.au/document/mesac25960",
   "identifier_type": "URL",
   "relation": "IsDocumentedBy"
  }
 ],
 "attribution": {
  "custodian": "Geological Survey of South Australia",
  "custodian_ror": "https://ror.org/0121cjp70",
  "changes_made": false,
  "changes_summary": "Nothing in the data. All thirteen EDI files are served byte-identical to the custodian's delivery and none is edited, including the two whose ROTSPEC contradicts their own sensor azimuths and the thirteen whose ENDDATE precedes their ACQDATE. Only the filename is AusMT's: SARIG delivers the survey as LineNo__StationNo_<n>.edi, which is the delivery's own sequence, and each file is served under the identity its own bytes carry in DATAID. Every served file's sha256 is recorded against its custodian path in provenance/served-files.json.",
  "declared_by": "Ben",
  "declared_date": "2026-09-18"
 },
 "provenance": {
  "generated": "2026-09-18T14:33:30Z",
  "generator": "ausmt/extract.build_portal 0.2.1"
 }
}