{
 "schema": "ausmt-station",
 "version": "0.1",
 "ausmt_id": "au.isa-region-2020.77",
 "station": "77",
 "survey": "Isa Region MT Survey",
 "survey_id": "isa-region-2020",
 "country": "Australia",
 "organisation": "Geological Survey of Queensland",
 "location": {
  "lat": -21.038444,
  "lon": 139.979472
 },
 "data": {
  "type": "AMT",
  "n_periods": 92,
  "period_min_s": 0.0001,
  "period_max_s": 728.332119
 },
 "diagnostics": {
  "median_relative_error": 1.345,
  "remote_reference": true,
  "tipper_available": true,
  "completeness_smoothness_diagnostic": {
   "value": 2.6,
   "basis": "e",
   "note": "not a quality or geological-value judgement"
  },
  "classification": "2-D",
  "skew_beta_median_deg": 1.1,
  "pct_periods_3d": 14,
  "method": "phase-tensor (Caldwell 2004)",
  "note": "screening diagnostic, not an interpretation product"
 },
 "processing": {
  "software": "EMpower",
  "algorithm": null,
  "remote_reference": true,
  "remote_site": "30",
  "file_written_by": {
   "name": "Geotools",
   "version": "1.9.6.12351"
  },
  "note": "source.file=77.edi (collection.zip!mt100092/Edited edis.zip!Edited edis/77 EDI.edi)\nsource.collection=Geological Survey of Queensland Open Data Portal record mt100092, Isa Region MT Survey, fetched as collection.zip\nsource.sha256=00854914b7afae515a4567a8859dcefbcce9381c2b1299c07c2291fe56779a2a\nsource.copy=provenance/as-delivered/77.edi in this package, byte identical to the delivery\nrepair.defect=ACQDATE=01/01/01 is the Geotools placeholder for a date the export did not carry, which a reader takes as 2001-01-01; FILEDATE=04/24/20 is written month/day/year\nrepair.change=ACQDATE set to 2020-03-20 and FILEDATE rewritten 04/24/20 to 2020-04-24, the same day in ISO 8601; no other byte is changed apart from the padding after a value that grew\nrepair.basis=the same sounding EMpower export inside this same release, collection.zip!mt100092/Processed edis.zip!Processed edis/20200321-22/77_Workbench 1.edi, matched by the >INFO UNIQUE ID {dc3dd046-4750-469a-88ac-70964a311665} that both files carry and sitting at the same position to 0.000 m; it prints ACQDATE=03/20/20 and ENDDATE=03/21/20, which the Geotools export dropped. Appendix I of the contractor logistics report 200104 prints 2020-03-21 for this station, which is the local deployment day; the header dates are the UTC recording window the exporter wrote\nrepair.ruling=the owner repair rule of 2026-09-18; the date named here is a proposal and its ruling is owed\nrepair.by=AusMT, _tools/repair_edi_header_dates.py\nMAXINFO=110\nUNIQUE ID: {dc3dd046-4750-469a-88ac-70964a311665}\nPROCESS DATE: 2020-03-22 17:46\nDURATION: 4 h 14 m 16 s \nDECLINATION: 5.45°\nCOORDINATES: -21° 2' 18.4\", 139° 58' 46.1\"\nGPS (MIN - MAX): 9 - 13\nTEMPERATURE (MIN - MAX): 33° - 46°\nCOMB FILTER: NONE\nFINE ROBUST: NONE\nEDITING WORKBENCH\nTOTOAL REJECTED CROSSPOWERS: 17.1740%\nROBUST ALGORITHM: Multiple Coherence, ATTACK: 0.8, RATIO: 80% \nSTATIONS\nELECTRICS\nRECORDING ID: 10263_2020-03-20-232608\nINSTRUMENT TYPE: MTU-5C\nSTATION NAME: 77\nOPERATOR: K1,LT\nAZIMUTH: 0\nEX\nTAG: E1\nLENGTH: 100 [m]\nAC: 3.88756 [V]\nDC: -0.0279999 [V]\nNEGATIVE RES: 1291.86 [Ω]\nPOSITIVE RES: 1272.56 [Ω]\nSATURATION: 0.00294966%\nMIN VALUE: -2.13192 [V]\nMAX VALUE: 1.75564 [V]\nEY\nTAG: E2\nLENGTH: 100 [m]\nAC: 5 [V]\nDC: 0.0259399 [V]\nNEGATIVE RES: 1205.19 [Ω]\nPOSITIVE RES: 981.67 [Ω]\nSATURATION: 0.025236%\nMIN VALUE: -2.5 [V]\nMAX VALUE: 2.5 [V]\nMAGNETICS\nRECORDING ID: 10263_2020-03-20-232608\nINSTRUMENT TYPE: MTU-5C\nSTATION NAME: 77\nOPERATOR: K1,LT\nAZIMUTH: 0\nHX\nTAG: H1\nSENSOR TYPE: MTC-150\nDETECTED SENSOR TYPE: MTC-150\nAC: 0.332836 [V]\nDC: 0.0314331 [V]\nCAL NAME: 53688_5E70367D.scal\nSENSOR SERIAL: 53688\nSATURATION: 0 %\nMIN VALUE: -0.147158 [V]\nMAX VALUE: 0.185678 [V]\nHY\nTAG: H2\nSENSOR TYPE: MTC-150\nDETECTED SENSOR TYPE: MTC-150\nAC: 0.313606 [V]\nDC: -0.0436401 [V]\nCAL NAME: 53702_5E70367D.scal\nSENSOR SERIAL: 53702\nSATURATION: 0 %\nMIN VALUE: -0.152987 [V]\nMAX VALUE: 0.160619 [V]\nHZ\nTAG: H3\nSENSOR TYPE: MTC-150\nDETECTED SENSOR TYPE: MTC-150\nAC: 0.104607 [V]\nDC: -0.0167847 [V]\nCAL NAME: 53755_5E70367D.scal\nSENSOR SERIAL: 53755\nSATURATION: 0 %\nMIN VALUE: -0.0489008 [V]\nMAX VALUE: 0.0557064 [V]\nREFERENCE\nRECORDING ID: 10290_2020-03-20-205720\nINSTRUMENT TYPE: MTU-8A\nSTATION NAME: 30 (Remote)\nOPERATOR: K1,LT\nAZIMUTH: 0\nRX\nTAG: H1\nSENSOR TYPE: MTC-150\nDETECTED SENSOR TYPE: MTC-150\nAC: 0.4602 [V]\nDC: 0.055542 [V]\nCAL NAME: 53545_5E7035BC.scal\nSENSOR SERIAL: 53545\nSATURATION: 0 %\nMIN VALUE: -0.156852 [V]\nMAX VALUE: 0.303348 [V]\nRY\nTAG: H2\nSENSOR TYPE: MTC-150\nDETECTED SENSOR TYPE: MTC-150\nAC: 0.303352 [V]\nDC: -0.00488281 [V]\nCAL NAME: 54128_5E7035BC.scal\nSENSOR SERIAL: 54128\nSATURATION: 0 %\nMIN VALUE: -0.124536 [V]\nMAX VALUE: 0.178816 [V]"
 },
 "distribution": {
  "edi_available": true,
  "license": "CC-BY-4.0",
  "edi_path": "edi/isa-region-2020/77.edi"
 },
 "provenance": {
  "pipeline": "ausmt/extract.build_portal",
  "pipeline_version": "0.2.1",
  "extractor": "mt_metadata (community canonical)",
  "software": {
   "python": "3.12.14",
   "mt_metadata": "1.0.10",
   "mth5": "0.6.8"
  },
  "git_commit": "e208b15fb70740d8c44de51c532e6debd59c4e24",
  "parameters": {
   "dimensionality": {
    "beta_per_period_deg": 3.0,
    "skew_3d_deg": 5.0,
    "pct_periods_3d_threshold": 40,
    "ellip_2d_deg": 0.1,
    "min_rez_row_sine": 0.01,
    "beta_physical_cap_deg": 15.0,
    "min_usable_period_frac": 0.5,
    "skew_aggregation": "median"
   },
   "diagnostic": "completeness/smoothness (median rel error + coverage + smoothness)"
  },
  "generated": "2026-09-20T04:08:35.832153+00:00",
  "input_file": "77.edi",
  "input_sha256": "936a7037420d00f326acc55d8d5600e84130c5491df320e77f8972bfcae7934f",
  "source": {
   "original_filename": "77.edi",
   "source_record_id": "collection.zip!mt100092/Edited edis.zip!Edited edis/77 EDI.edi"
  }
 },
 "coordinate_qc": null,
 "canonical_conditioning": [
  "survey.id->isa-region-2020",
  "station.id set to the sanitised EMTF-XML Site.id",
  "station.source_file_preserved_in_site_name",
  "sign_convention: '+' is a library default — EDI carries no machine-readable sign convention; NOT asserted by source",
  "declination.epoch/model: library defaults (epoch=None, model=IGRF) — an EDI states only the declination value; epoch/model NOT asserted by source",
  "channel orientations: degenerate/defaulted (ex and ey azimuths both 0 deg — parallel dipoles are non-physical); orientations NOT asserted by source EMEAS geometry",
  "citation.authors<-survey_meta:Geological Survey of Queensland",
  "citation.title<-survey_meta",
  "copyright.release_status=Data Citation Required; conditions_of_use set from licence CC-BY-4.0 (replaced mt_metadata default boilerplate)"
 ],
 "frame": {
  "evidence": {
   "branch": "mt",
   "zrot": "0",
   "trot": "0",
   "rotspec": null,
   "hmeas_azimuths": {
    "hx": 0.0,
    "hy": 0.0
   },
   "emeas_azimuths": {
    "ex": null,
    "ey": null
   }
  },
  "impedance_rotation_deg_source": null,
  "tipper_rotation_deg_source": null,
  "derotated": false,
  "frame_served": "declared-zero",
  "declared_azimuth_deg": 0.0,
  "convention_check": {
   "verdict": "ok",
   "phs_xy_median_deg": 51.35,
   "phs_yx_median_deg": -134.76,
   "n_periods_used": 74,
   "detail": null
  },
  "survey_frame_note": "frame: mixed declared frames across stations: 0°…13° — each station is served in its own declared acquisition frame; this survey does not share one frame (nothing de-rotated)"
 },
 "resources": [
  {
   "id": "edi",
   "kind": "transfer_function",
   "format": "edi",
   "provenance_role": "source",
   "representation_role": "original",
   "path": "edi/isa-region-2020/77.edi"
  },
  {
   "id": "emtfxml",
   "kind": "transfer_function",
   "format": "emtfxml",
   "provenance_role": "derived",
   "representation_role": "alternate",
   "path": "xml/isa-region-2020/77.xml"
  },
  {
   "id": "mth5",
   "kind": "transfer_function",
   "format": "mth5",
   "provenance_role": "derived",
   "representation_role": "alternate",
   "path": "h5/isa-region-2020/77.h5"
  },
  {
   "id": "edi-zip",
   "kind": "archive",
   "format": "zip",
   "path": "bundles/isa-region-2020-edi.zip"
  },
  {
   "id": "xml-zip",
   "kind": "archive",
   "format": "zip",
   "path": "bundles/isa-region-2020-xml.zip"
  },
  {
   "id": "survey-mth5",
   "kind": "archive",
   "format": "mth5",
   "path": "bundles/isa-region-2020-tf.h5"
  }
 ]
}