{
 "schema": "ausmt-station",
 "version": "0.1",
 "ausmt_id": "au.goma-long-period-2008.LG01",
 "station": "LG01",
 "survey": "GOMA Long-Period MT Transect 2008 (Adelaide University)",
 "survey_id": "goma-long-period-2008",
 "country": "Australia",
 "organisation": "Adelaide University",
 "location": {
  "lat": -28.731583,
  "lon": 134.3225
 },
 "data": {
  "type": "LPMT",
  "n_periods": 24,
  "period_min_s": 4.0,
  "period_max_s": 13107.190605
 },
 "diagnostics": {
  "median_relative_error": 0.064,
  "remote_reference": false,
  "tipper_available": true,
  "completeness_smoothness_diagnostic": {
   "value": 3.8,
   "basis": "e",
   "note": "not a quality or geological-value judgement"
  },
  "classification": "2-D",
  "skew_beta_median_deg": 2.0,
  "pct_periods_3d": 36,
  "method": "phase-tensor (Caldwell 2004)",
  "note": "screening diagnostic, not an interpretation product"
 },
 "processing": {
  "software": null,
  "algorithm": null,
  "remote_reference": false,
  "remote_site": null,
  "file_written_by": {
   "name": null,
   "version": null
  },
  "note": "source.file=SA_GOMA_LP_01.edi\nsource.collection=The University of Adelaide Magnetotellurics data collection at NCI, SA_Long_Period_Coober_Pedy_GOMA_2008/01-12/EDI\nsource.sha256=e8d331a8ef268e621f35d6d247bdd7dcd397085954ed3c1834d6fa5f287ecb1e\nsource.copy=provenance/as-delivered/SA_GOMA_LP_01.edi in this package, byte identical to the collection file\nrepair.defect=the source ACQDATE reads 0/12/08, a day number of zero, which the mt_metadata reader refuses\nrepair.change=ACQDATE set to 09/12/08; no other byte of the header or of any data block is changed\nrepair.basis=the field notes record deployment of LG01 on 09/12/2008 at 09:40 UTC (GOMA MT Survey Field notes, Long period MT sheet); the file FILEDATE reads 09/12/08; LG02, deployed the same day, reads ACQDATE=09/12/08 in the same day, month, year form\nrepair.ruling=owner ruling 2026-09-18: a day zero acquisition date is repaired in the served copy and the delivered file is kept in provenance\nrepair.by=AusMT corpus package build, one header line"
 },
 "distribution": {
  "edi_available": true,
  "license": "CC-BY-4.0",
  "edi_path": "edi/goma-long-period-2008/SA_GOMA_LP_01.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": "fe775c8aef1d9eeaf0cff0bc4e9a2beb6de4d687",
  "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": "2026-09-18T07:34:34.383280+00:00",
  "input_file": "SA_GOMA_LP_01.edi",
  "input_sha256": "7413f71441e9947a083c70700a3473600eca045db965b7b0dea4a3d8a903210e",
  "source": {
   "original_filename": "SA_GOMA_LP_01.edi",
   "source_record_id": "SA_Long_Period_Coober_Pedy_GOMA_2008/01-12/EDI/SA_GOMA_LP_01.edi"
  }
 },
 "coordinate_qc": null,
 "canonical_conditioning": [
  "survey.id->goma-long-period-2008",
  "survey.project->08GA_OM1_GOMA_line",
  "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",
  "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": {
  "evidence": {
   "branch": "mt",
   "zrot": null,
   "trot": null,
   "rotspec": null,
   "hmeas_azimuths": {
    "hx": 0.0,
    "hy": 90.0
   },
   "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": 34.46,
   "phs_yx_median_deg": -127.18,
   "n_periods_used": 24,
   "detail": null
  }
 },
 "resources": [
  {
   "id": "edi",
   "kind": "transfer_function",
   "format": "edi",
   "provenance_role": "source",
   "representation_role": "original",
   "path": "edi/goma-long-period-2008/SA_GOMA_LP_01.edi"
  },
  {
   "id": "emtfxml",
   "kind": "transfer_function",
   "format": "emtfxml",
   "provenance_role": "derived",
   "representation_role": "alternate",
   "path": "xml/goma-long-period-2008/LG01.xml"
  },
  {
   "id": "mth5",
   "kind": "transfer_function",
   "format": "mth5",
   "provenance_role": "derived",
   "representation_role": "alternate",
   "path": "h5/goma-long-period-2008/LG01.h5"
  },
  {
   "id": "edi-zip",
   "kind": "archive",
   "format": "zip",
   "path": "bundles/goma-long-period-2008-edi.zip"
  },
  {
   "id": "xml-zip",
   "kind": "archive",
   "format": "zip",
   "path": "bundles/goma-long-period-2008-xml.zip"
  },
  {
   "id": "survey-mth5",
   "kind": "archive",
   "format": "mth5",
   "path": "bundles/goma-long-period-2008-tf.h5"
  }
 ]
}