{
 "schema": "ausmt-station",
 "version": "0.1",
 "ausmt_id": "au.paralana-2012.PLL22",
 "station": "PLL22",
 "survey": "Paralana Broadband and Long Period MT Survey 2012 (Adelaide University)",
 "survey_id": "paralana-2012",
 "country": "Australia",
 "organisation": "Adelaide University",
 "location": {
  "lat": -30.176767,
  "lon": 139.69879
 },
 "data": {
  "type": "LPMT",
  "n_periods": 22,
  "period_min_s": 5.333333,
  "period_max_s": 8196.721311
 },
 "diagnostics": {
  "median_relative_error": 1.104,
  "remote_reference": true,
  "tipper_available": true,
  "completeness_smoothness_diagnostic": {
   "value": 2.3,
   "basis": "e",
   "note": "not a quality or geological-value judgement"
  },
  "classification": "3-D",
  "skew_beta_median_deg": 6.3,
  "pct_periods_3d": 76,
  "method": "phase-tensor (Caldwell 2004)",
  "note": "screening diagnostic, not an interpretation product"
 },
 "processing": {
  "software": "BIRRP 5.1",
  "algorithm": null,
  "remote_reference": true,
  "remote_site": null,
  "file_written_by": {
   "name": null,
   "version": null
  },
  "note": "Survey Parameters: \nSampling Frequency (Hz): 10\nCache Rate (HHMMSS): 010000\nData Logger Gain: 1\nInterface Box Gain: 10\nInstrument Box no: 7\nData Logger: 5433\nHard Drive no: 5451\nInterface Box no: 7\nBattery no: 2 Starting Voltage: 13.24 End Voltage 12.45\nOther Notes: na\nTransfer Functions Computed using BIRRP 5.1  \nCoil Calibration File=F:\\Modelling\\ForPaul\\BBConv.txt\nInteraction Level (ILEV)=0\nNumber of outputs (NOUT)=3\nNumber of inputs (NINP)=2\nSlepian Filter order (TBW)=2.0\nMax length of fft window (NFFT)=32768\nMaximum number of fft sections (NSCTMAX)=11\nSmall leverage point control (UIN)=0\nLarge leverage point control (AINUIN)=0.9999\nElectric coherence threshold (C2THRESHE)=0\nZ component (NZ)=0\nCoherence threshold z channel (c2threshe1)=0\nOrder of prewhitening filter (NAR)=5\nElectric channel rotation angles (THETAE)=0,270,180\nMagnetic channel rotation angles (THETAB)=0,90,0\nFinal channel rotation angles (THETAF)=0,90,0\nRemote Reference Station: ASP\nRemote Reference Lat=-23.799998\nRemote Reference Long=133.9\nRemote Reference Elev=1"
 },
 "distribution": {
  "edi_available": true,
  "license": "CC-BY-4.0",
  "edi_path": "edi/paralana-2012/PLL22.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": "PLL22.edi",
  "input_sha256": "d16f49340af11ee41ba66c5ea2ee6b61990545aa0ed7e5851926e83c3ef4630a"
 },
 "coordinate_qc": null,
 "canonical_conditioning": [
  "survey.id->paralana-2012",
  "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": {
  "convention_check": {
   "detail": null,
   "n_periods_used": 22,
   "phs_xy_median_deg": 45.02,
   "phs_yx_median_deg": -124.42,
   "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": null
  },
  "frame_served": "declared-zero",
  "impedance_rotation_deg_source": null,
  "tipper_rotation_deg_source": null,
  "survey_frame_note": "frame: mixed declared frames across stations: 0°…15° — each station is served in its own declared acquisition frame; this survey does not share one frame (nothing de-rotated)"
 },
 "runs": [
  {
   "id": "PLL22_001",
   "time_period": {
    "start": "2012-05-02T03:00:00.000000+00:00",
    "end": "2012-05-04T13:02:00.000000+00:00"
   },
   "sample_rate_hz": 10.0,
   "data_logger": {
    "manufacturer": "Earth Data Ltd",
    "model": "PR6-24",
    "serial_number": "61002",
    "identifiers": [
     {
      "scheme": "DOI",
      "identifier": "10.82388/pqespgbo"
     }
    ]
   },
   "channels": [
    {
     "component": "ex",
     "measurement_azimuth_deg": 0.0,
     "dipole_length_m": 47.6
    },
    {
     "component": "ey",
     "measurement_azimuth_deg": 90.0,
     "dipole_length_m": 49.7
    },
    {
     "component": "hx"
    },
    {
     "component": "hy"
    },
    {
     "component": "hz"
    }
   ]
  }
 ],
 "resources": [
  {
   "id": "edi",
   "kind": "transfer_function",
   "format": "edi",
   "provenance_role": "source",
   "representation_role": "original",
   "path": "edi/paralana-2012/PLL22.edi",
   "related_collection_identifiers": [
    {
     "scheme": "DOI",
     "identifier": "10.4225/41/5a618c3ae30ab",
     "identifies": "collection"
    }
   ]
  },
  {
   "id": "emtfxml",
   "kind": "transfer_function",
   "format": "emtfxml",
   "provenance_role": "derived",
   "representation_role": "alternate",
   "path": "xml/paralana-2012/PLL22.xml",
   "related_collection_identifiers": [
    {
     "scheme": "DOI",
     "identifier": "10.4225/41/5a618c3ae30ab",
     "identifies": "collection"
    }
   ]
  },
  {
   "id": "mth5",
   "kind": "transfer_function",
   "format": "mth5",
   "provenance_role": "derived",
   "representation_role": "alternate",
   "path": "h5/paralana-2012/PLL22.h5",
   "related_collection_identifiers": [
    {
     "scheme": "DOI",
     "identifier": "10.4225/41/5a618c3ae30ab",
     "identifies": "collection"
    }
   ]
  },
  {
   "id": "edi-zip",
   "kind": "archive",
   "format": "zip",
   "path": "bundles/paralana-2012-edi.zip",
   "related_collection_identifiers": [
    {
     "scheme": "DOI",
     "identifier": "10.4225/41/5a618c3ae30ab",
     "identifies": "collection"
    }
   ]
  },
  {
   "id": "xml-zip",
   "kind": "archive",
   "format": "zip",
   "path": "bundles/paralana-2012-xml.zip",
   "related_collection_identifiers": [
    {
     "scheme": "DOI",
     "identifier": "10.4225/41/5a618c3ae30ab",
     "identifies": "collection"
    }
   ]
  },
  {
   "id": "survey-mth5",
   "kind": "archive",
   "format": "mth5",
   "path": "bundles/paralana-2012-tf.h5",
   "related_collection_identifiers": [
    {
     "scheme": "DOI",
     "identifier": "10.4225/41/5a618c3ae30ab",
     "identifies": "collection"
    }
   ]
  }
 ]
}