{
 "schema": "ausmt-station",
 "version": "0.1",
 "ausmt_id": "au.wa-mt-phase-1.MBU20",
 "station": "MBU20",
 "survey": "WA-MT Phase 1",
 "survey_id": "wa-mt-phase-1",
 "country": "Australia",
 "organisation": "Geological Survey of Western Australia",
 "location": {
  "lat": -32.402418,
  "lon": 120.605851
 },
 "data": {
  "type": "LPMT",
  "n_periods": 44,
  "period_min_s": 5.0,
  "period_max_s": 100000.0
 },
 "diagnostics": {
  "median_relative_error": 0.037,
  "remote_reference": false,
  "tipper_available": true,
  "completeness_smoothness_diagnostic": {
   "value": 4.5,
   "basis": "e",
   "note": "not a quality or geological-value judgement"
  },
  "classification": "3-D",
  "skew_beta_median_deg": 4.2,
  "pct_periods_3d": 72,
  "method": "phase-tensor (Caldwell 2004)",
  "note": "screening diagnostic, not an interpretation product"
 },
 "processing": {
  "software": "LEMIMT",
  "algorithm": "Robust Single Station With Coherence Pre-sorting",
  "remote_reference": false,
  "remote_site": null,
  "file_written_by": {
   "name": null,
   "version": null
  },
  "note": "source.file=MBU20.edi (WA-MT/Phase1/MBU20.edi)\nsource.collection=Geological Survey of Western Australia WA Array long-period magnetotelluric programme (WA-MT), first data release, 180 EDI files delivered to AusMT as one folder\nsource.sha256=cf7f7f8dbebe56e3e8fe5334e936af36ba8ed1762746f6370f8c43d1b5813b76\nsource.copy=provenance/as-delivered/MBU20.edi in this package, byte identical to the delivery\nrepair.defect=ACQDATE=01/01/01 is a placeholder the exporter writes where the project held no date and it publishes 2001-01-01; FILEDATE=07/17/24 is written month/day/year with a two digit year\nrepair.change=ACQDATE set to 2024-03-14, the field sheet start date for this station, and FILEDATE rewritten 07/17/24 to ISO 8601; no other byte is changed apart from the padding after a value whose length moved\nrepair.basis=this file's exporter (no PROGVERS, FILEBY LEMI or empty) writes month/day/year: across the 52 files it wrote in this delivery, 52 FILEDATE values carry a day above 12 in the SECOND field and none carries one in the first, and no ACQDATE value it writes settles the order on its own, so no value it writes reads day first; the two digit years 24 and 25 are 2024 and 2025, the only years the field sheet's acquisition window 2023-12-15 to 2025-07-12 admits\nrepair.ruling=the repair rule of owner ruling 2026-09-18, under which a served copy is corrected before upload and the delivered file is kept in provenance; no ruling names this survey and one is owed\nrepair.by=AusMT, _tools/repair_edi_header_dates.py\nMAXINFO=13\n*\nSITE        : test\nLATITUDE    :   -32.4026\nLONGITUDE   :   120.6059\nELEVATION   :   322.6000\nDECLINATION :     0.0000\n*\nProcessing code: LEMIMT\nAlgorithm      : Robust Single Station With Coherence Pre-sorting"
 },
 "distribution": {
  "edi_available": true,
  "license": "CC-BY-4.0",
  "edi_path": "edi/wa-mt-phase-1/MBU20.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": "MBU20.edi",
  "input_sha256": "930c630214293b7bf1c36e4c76a00278d5a649bf764c14c66f0ff09aa1184955"
 },
 "coordinate_qc": null,
 "canonical_conditioning": [
  "survey.id->wa-mt-phase-1",
  "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 Western Australia",
  "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": 44,
   "phs_xy_median_deg": 57.79,
   "phs_yx_median_deg": -117.12,
   "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": "0",
   "zrot": "0"
  },
  "frame_served": "declared-zero",
  "impedance_rotation_deg_source": null,
  "tipper_rotation_deg_source": null
 },
 "runs": [
  {
   "id": "MBU20_001",
   "time_period": {
    "start": "2024-03-14T05:33:00.000000+00:00",
    "end": "2024-04-16T02:05:02.000000+00:00"
   },
   "sample_rate_hz": 1.0,
   "data_logger": {
    "manufacturer": "LEMI",
    "model": "LEMI-424",
    "serial_number": "#0021",
    "identifiers": [
     {
      "scheme": "DOI",
      "identifier": "10.82388/8kevpb2k"
     }
    ]
   },
   "channels": [
    {
     "component": "ex",
     "measurement_azimuth_deg": 0.0,
     "dipole_length_m": 100.0
    },
    {
     "component": "ey",
     "measurement_azimuth_deg": 90.0,
     "dipole_length_m": 100.0
    },
    {
     "component": "hx",
     "sensor": {
      "manufacturer": "LEMI",
      "model": "LEMI-424 3-component fluxgate magnetometer"
     }
    },
    {
     "component": "hy",
     "sensor": {
      "manufacturer": "LEMI",
      "model": "LEMI-424 3-component fluxgate magnetometer"
     }
    },
    {
     "component": "hz"
    }
   ]
  }
 ],
 "resources": [
  {
   "id": "edi",
   "kind": "transfer_function",
   "format": "edi",
   "provenance_role": "source",
   "representation_role": "original",
   "path": "edi/wa-mt-phase-1/MBU20.edi"
  },
  {
   "id": "emtfxml",
   "kind": "transfer_function",
   "format": "emtfxml",
   "provenance_role": "derived",
   "representation_role": "alternate",
   "path": "xml/wa-mt-phase-1/MBU20.xml"
  },
  {
   "id": "mth5",
   "kind": "transfer_function",
   "format": "mth5",
   "provenance_role": "derived",
   "representation_role": "alternate",
   "path": "h5/wa-mt-phase-1/MBU20.h5"
  },
  {
   "id": "edi-zip",
   "kind": "archive",
   "format": "zip",
   "path": "bundles/wa-mt-phase-1-edi.zip"
  },
  {
   "id": "xml-zip",
   "kind": "archive",
   "format": "zip",
   "path": "bundles/wa-mt-phase-1-xml.zip"
  },
  {
   "id": "survey-mth5",
   "kind": "archive",
   "format": "mth5",
   "path": "bundles/wa-mt-phase-1-tf.h5"
  }
 ]
}