{
 "schema": "ausmt-survey-metadata",
 "version": "0.1",
 "survey_id": "renmark-2009",
 "title": "Renmark 2009",
 "dates": {
  "coverage": {
   "year_start": 2009,
   "year_end": 2009
  }
 },
 "abstract": "A magnetotelluric survey of the Renmark Trough, Murray Basin, South Australia, on the Calperum\npastoral lease north west of Renmark. The University of Adelaide recorded it from 18 to 27 May\n2009 as an undergraduate honours project, supported by Petratherm Ltd on geothermal exploration\nlicence GEL 241 to test the trough for geothermal prospectivity. Two transects crossing the\nHamley Fault carry 24 sites over 73.8 line km: 15 broadband sites on line RM01 at 2 to 3 km\nspacing, on induction coils with 50 m dipoles, and 9 long period sites on line RM02 at 4 to 5 km\non fluxgate magnetometers with 20 m dipoles, the two instruments compared. Processing was BIRRP\nwith remote and self reference. AusMT serves 24 files from the SARIG open file release, one per\nsite, 0.0053 s to 8192 s; at 9 line RM01 sites the delivery's two bands are merged. Two\ndelivered positions are defective and served as stored; README.md states them.",
 "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": "Emily Craven",
   "name_type": "person",
   "role": "ProjectMember"
  },
  {
   "name": "Goren Boren",
   "name_type": "person",
   "role": "DataCollector"
  },
  {
   "name": "Jared Peacock",
   "name_type": "person",
   "role": "DataCollector"
  },
  {
   "name": "Adelaide University",
   "name_type": "organisation",
   "role": "DataCollector",
   "ror": "https://ror.org/028g18b61"
  },
  {
   "name": "Petratherm Ltd",
   "name_type": "organisation",
   "role": "Sponsor"
  },
  {
   "name": "Geological Survey of South Australia",
   "name_type": "organisation",
   "role": "Distributor",
   "ror": "https://ror.org/0121cjp70"
  }
 ],
 "organisations": [
  {
   "name": "Adelaide University",
   "ror": "https://ror.org/028g18b61",
   "roles": [
    "custodian",
    "data_collector"
   ],
   "primary_custodian": true
  },
  {
   "name": "Geological Survey of South Australia",
   "ror": "https://ror.org/0121cjp70",
   "roles": [
    "distributor",
    "publisher"
   ]
  },
  {
   "name": "Petratherm Ltd",
   "roles": [
    "rights_holder"
   ]
  }
 ],
 "rights": {
  "license": "CC-BY-4.0",
  "access": "open"
 },
 "extent": {
  "bbox": {
   "west": 140.3177,
   "south": -34.055434,
   "east": 140.73455,
   "north": -33.810166
  }
 },
 "relationships": [
  {
   "identifier": "https://pid.sarig.sa.gov.au/dataset/mesac1113",
   "identifier_type": "URL",
   "relation": "IsVariantFormOf"
  },
  {
   "identifier": "https://pid.sarig.sa.gov.au/document/mesac35385",
   "identifier_type": "URL",
   "relation": "IsDocumentedBy"
  },
  {
   "identifier": "SA_Broadband_Renmark_2009 and SA_Long_Period_Renmark_Calperum_2009",
   "identifier_type": "URL",
   "relation": "IsVariantFormOf"
  }
 ],
 "attribution": {
  "custodian": "Adelaide University",
  "custodian_ror": "https://ror.org/028g18b61",
  "changes_made": true,
  "changes_summary": "NINE OF THE 24 SERVED FILES ARE DERIVED AND NO VALUE IS ALTERED IN ANY OF THEM; ONE OF THE NINE, RM0111, ALSO HAS ITS X AND Y LABELS INTERCHANGED UNDER THE OWNER RULING OF 2026-09-18. At the nine line RM01 sites the delivery gives two bands of one recording, and under the owner ruling of 2026-09-18 the two are served as one file until the survey is reprocessed and new EDIs are served. The tool is _tools/merge_edi_bands.py: it prepends every second-band frequency strictly below the broadband band's floor to every data block, drops the overlapping second-band frequencies in favour of the broadband estimates, copies every token as printed, keeps the broadband file's header and inserts a ten-line derivation record after the >INFO line naming both delivered files, both sha256 digests, the counts and period ranges added and dropped, the basis and this ruling. The 18 delivered files behind those nine are kept byte-identical under provenance/as-delivered/ and their digests are recorded per row in provenance/served-files.json. The other 15 served files are byte-identical to the custodian files they came from, and every digest was recomputed against the SARIG delivery, the upload set copy and the served copy when this package was built. Only the filename is otherwise AusMT's: the upload set prefixes every name with RENMARK_ because that tree is flat, and the served name drops the prefix so the stem is the published station id. The published station identifiers are declared in the station_ids block below rather than by rewriting any file, and each EDI's own DATAID survives as site_name. Two defective positions in the delivered headers, at RM0107 and RM0227, are served as stored and are stated in README.md, in processing.notes and in this file; neither is repaired, because the reader does not refuse either file.",
  "declared_by": "Ben",
  "declared_date": "2026-09-18"
 },
 "provenance": {
  "generated": "2026-09-18T14:33:30Z",
  "generator": "ausmt/extract.build_portal 0.2.1"
 }
}