{
 "schema": "ausmt-station",
 "version": "0.1",
 "ausmt_id": "au.olympic-dam-2013.OD44",
 "station": "OD44",
 "survey": "Olympic Dam 2013",
 "survey_id": "olympic-dam-2013",
 "country": "Australia",
 "organisation": "Adelaide University",
 "location": {
  "lat": -30.35574,
  "lon": 136.92574
 },
 "data": {
  "type": "BBMT",
  "n_periods": 76,
  "period_min_s": 0.003162,
  "period_max_s": 5623.417711
 },
 "diagnostics": {
  "median_relative_error": 0.01,
  "remote_reference": true,
  "tipper_available": false,
  "completeness_smoothness_diagnostic": {
   "value": 5.0,
   "basis": "e",
   "note": "not a quality or geological-value judgement"
  },
  "classification": "2-D",
  "skew_beta_median_deg": 0.9,
  "pct_periods_3d": 21,
  "method": "phase-tensor (Caldwell 2004)",
  "note": "screening diagnostic, not an interpretation product"
 },
 "processing": {
  "software": null,
  "algorithm": null,
  "remote_reference": true,
  "remote_site": null,
  "file_written_by": {
   "name": "Geotools",
   "version": "4.0.5.12583"
  },
  "note": "source.file=OD44.edi (PROCESSED_DATA/Extra/UA_OD/OD44.edi)\nsource.collection=Adelaide University's own Geotools 4.0.5.12583 export of CGG's 2022 robust remote reference re-processing of the Olympic Dam 2013 survey, folder PROCESSED_DATA/Extra/UA_OD\nsource.sha256=232ac03293fa8f72e1b4ef9fb7e235154bf167214a1062fc52475087be44e305\nsource.copy=provenance/as-delivered/OD44.edi in this package, byte identical to the delivery\nrepair.defect=ACQDATE=07/06/13 and FILEDATE=09/19/26 are printed month first with a two digit year, a form a reader may take day first; the printed acquisition date parses and is converted as printed, never replaced\nrepair.change=ACQDATE rewritten 07/06/13 to 2013-07-06 and FILEDATE rewritten 09/19/26 to 2026-09-19; the nine line record inserted after >INFO; no other byte changed\nrepair.basis=the export prints a date month first: all 76 delivered files print FILEDATE=09/19/26, whose second field is 19 and cannot be a month, so no value in this export can be read day first, and no ACQDATE value in the delivery carries a second field above 12 that would contradict it. The two digit year is the same export's own convention, PROGDATE=06/06/25 for a program built in 2025 and an export written 2026-09-19, so 26 resolves to 2026 and 13 to 2013\nrepair.ruling=the repair rule of owner ruling 2026-09-18: a header defect the reader or a gate refuses or misreads is repaired in the served copy, the delivered file is kept under provenance/as-delivered/ and the change is recorded in the served file\nrepair.by=AusMT, _tools/repair_edi_header_dates.py\nMAXINFO=4"
 },
 "distribution": {
  "edi_available": true,
  "license": "CC-BY-4.0",
  "edi_path": "edi/olympic-dam-2013/OD44.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": "2026-09-21T01:46:08.361354+00:00",
  "input_file": "OD44.edi",
  "input_sha256": "09c3e3270e7267b9b7979a27ef791ad037f8d97d24ecbe35e114de33b050ecf9"
 },
 "coordinate_qc": null,
 "canonical_conditioning": [
  "survey.id->olympic-dam-2013",
  "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:Adelaide University",
  "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": {
  "convention_check": {
   "detail": null,
   "n_periods_used": 76,
   "phs_xy_median_deg": 38.22,
   "phs_yx_median_deg": -149.93,
   "verdict": "ok"
  },
  "declared_azimuth_deg": 0.0,
  "derotated": false,
  "evidence": {
   "branch": "mt",
   "emeas_azimuths": {
    "ex": null,
    "ey": null
   },
   "hmeas_azimuths": {
    "hx": 0.0,
    "hy": 90.0
   },
   "rotspec": null,
   "trot": null,
   "zrot": "0"
  },
  "frame_served": "declared-zero",
  "impedance_rotation_deg_source": null,
  "tipper_rotation_deg_source": null
 },
 "runs": [
  {
   "id": "OD44_001",
   "time_period": {
    "start": "2013-07-06T02:37:26.000000+00:00",
    "end": "2013-07-07T23:01:00.000000+00:00"
   },
   "sample_rate_hz": 1000.0,
   "data_logger": {
    "manufacturer": "Earth Data Ltd",
    "model": "PR6-24",
    "serial_number": "5931",
    "identifiers": [
     {
      "scheme": "DOI",
      "identifier": "10.82388/ibnrh5rj"
     }
    ]
   },
   "channels": [
    {
     "component": "ex",
     "measurement_azimuth_deg": 0.0,
     "dipole_length_m": 45.0
    },
    {
     "component": "ey",
     "measurement_azimuth_deg": 90.0,
     "dipole_length_m": 46.0
    },
    {
     "component": "hx",
     "sensor": {
      "manufacturer": "LEMI",
      "model": "LEMI-120",
      "serial_number": "117",
      "identifiers": [
       {
        "scheme": "DOI",
        "identifier": "10.82388/5rezalvk"
       }
      ]
     }
    },
    {
     "component": "hy",
     "sensor": {
      "manufacturer": "LEMI",
      "model": "LEMI-120",
      "serial_number": "118",
      "identifiers": [
       {
        "scheme": "DOI",
        "identifier": "10.82388/fkcn8o9m"
       }
      ]
     }
    }
   ]
  }
 ],
 "resources": [
  {
   "id": "edi",
   "kind": "transfer_function",
   "format": "edi",
   "provenance_role": "source",
   "representation_role": "original",
   "path": "edi/olympic-dam-2013/OD44.edi"
  },
  {
   "id": "emtfxml",
   "kind": "transfer_function",
   "format": "emtfxml",
   "provenance_role": "derived",
   "representation_role": "alternate",
   "path": "xml/olympic-dam-2013/OD44.xml"
  },
  {
   "id": "mth5",
   "kind": "transfer_function",
   "format": "mth5",
   "provenance_role": "derived",
   "representation_role": "alternate",
   "path": "h5/olympic-dam-2013/OD44.h5"
  },
  {
   "id": "edi-zip",
   "kind": "archive",
   "format": "zip",
   "path": "bundles/olympic-dam-2013-edi.zip"
  },
  {
   "id": "xml-zip",
   "kind": "archive",
   "format": "zip",
   "path": "bundles/olympic-dam-2013-xml.zip"
  },
  {
   "id": "survey-mth5",
   "kind": "archive",
   "format": "mth5",
   "path": "bundles/olympic-dam-2013-tf.h5"
  }
 ]
}