{
 "schema": "ausmt-station",
 "version": "0.1",
 "ausmt_id": "au.code-11-western-sa.MTB",
 "station": "MTB",
 "survey": "Western South Australia Array",
 "survey_id": "code-11-western-sa",
 "country": "Australia",
 "organisation": "Flinders University",
 "location": {
  "lat": -27.31,
  "lon": 133.27
 },
 "data": {
  "type": "GDS",
  "n_periods": 17,
  "period_min_s": 388.802488,
  "period_max_s": 27306.736572
 },
 "diagnostics": {
  "median_relative_error": null,
  "remote_reference": false,
  "tipper_available": true,
  "completeness_smoothness_diagnostic": {
   "value": null,
   "basis": "s",
   "note": "not a quality or geological-value judgement"
  },
  "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": "Tipper transfer functions converted from the compilation register\nGDS/registry/AllStationData.lst, joined to GDS/registry/AllStationName.lst.\nThe register is Liejun Wang's Australian Electromagnetic Database as\nsupplied to the NCI compilation; this station has no EDI in any holding.\n\nCONVENTION: the register stores induction arrows in sign-reversed polar\nParkinson form, R_ANGLE = atan2(-Ty,-Tx) measured clockwise from north and\nR_RADIUS = hypot(Tx,Ty), so\nTXR = -R_RADIUS.cos(R_ANGLE)    TYR = -R_RADIUS.sin(R_ANGLE)\nTXI = -Q_RADIUS.cos(Q_ANGLE)    TYI = -Q_RADIUS.sin(Q_ANGLE).\n\nCOORDINATES are the register's PRINTED values.  The September 2002\nconversion read integer-printed register coordinates under an\nimplied-decimal format and corrupted six NCI files that way (-32 became\n-0.32); reading the register directly avoids it, and every coordinate\nwritten here has been checked to fall inside continental Australia.\n\nNO ACQDATE is written.  The September 2002 conversion stamped the date\n01/01/1994 and the acquirer 'Flinders University' on all 368 NCI files\nregardless of array; both are boilerplate and never a provenance signal.\n\nVARIANCES: the register prints RR1ST/QR1ST (1 standard error on the arrow\nradius) and RA1ST/QA1ST (1 standard error on the arrow angle, in degrees)\nfor this reference code.  TXVAR.EXP and TYVAR.EXP propagate them onto the\ncomponents,\nvar(Tx) = (cos A . sR)^2 + (R . sin A . sA)^2,\nvar(Ty) = (sin A . sR)^2 + (R . cos A . sA)^2, sA in radians,\naveraged over the in-phase and quadrature pairs.\n\nATTRIBUTION OPEN: the identity of register reference code 11 is unresolved.\nWhite and Polatajko (1985), White and Heinson (1994) and Constable's South\nAustralian Electrical Sounding Project have all been refuted on coordinates.\nACQBY is therefore absent.  The DATA are sound; only the array's name is\nunknown.\n\nIDENTITY: register STATION_ID 322, FULL_NAME MTB, SHO MTB, REFERENCE_CODE\n11, register E_LONG 133.27, S_LAT -27.31, MAG_DEC 5.404. Identity is the\nSTATION_ID plus the coordinate, never the three-letter SHO code: SHO codes\ncollide across the compilation (five KOOs, three MORs and MUNs, two NORs,\nGREs, WARs and DARs). Dates in this file are ISO 8601."
 },
 "distribution": {
  "edi_available": true,
  "license": "CC-BY-4.0",
  "edi_path": "edi/code-11-western-sa/MTB.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": "25c90921c42c72bbc5455b4bbdab9137cf8b8e48",
  "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": "2026-09-09T06:22:47.791693+00:00",
  "input_file": "MTB.edi",
  "input_sha256": "e5c80ba2d209d79e7a99e19cece693fe8f09e102a9c084f1614d1fdf982c3c41"
 },
 "coordinate_qc": null,
 "canonical_conditioning": null,
 "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": "insufficient",
   "phs_xy_median_deg": null,
   "phs_yx_median_deg": null,
   "n_periods_used": 0,
   "detail": "only 0 usable period(s) (< 5) — no convention verdict"
  }
 },
 "resources": [
  {
   "id": "edi",
   "kind": "transfer_function",
   "format": "edi",
   "provenance_role": "source",
   "representation_role": "original",
   "path": "edi/code-11-western-sa/MTB.edi"
  },
  {
   "id": "mth5",
   "kind": "transfer_function",
   "format": "mth5",
   "provenance_role": "derived",
   "representation_role": "alternate",
   "path": "h5/code-11-western-sa/MTB.h5"
  },
  {
   "id": "edi-zip",
   "kind": "archive",
   "format": "zip",
   "path": "bundles/code-11-western-sa-edi.zip"
  },
  {
   "id": "survey-mth5",
   "kind": "archive",
   "format": "mth5",
   "path": "bundles/code-11-western-sa-tf.h5"
  }
 ]
}