{
 "schema": "ausmt-station",
 "version": "0.1",
 "ausmt_id": "au.seahorse-2022-23.ROMA18",
 "station": "ROMA18",
 "survey": "Seahorse Magnetotelluric Survey 2022-23 (BHP, released by the Geological Survey of Western Australia)",
 "survey_id": "seahorse-2022-23",
 "country": "Australia",
 "organisation": "Geological Survey of Western Australia",
 "location": {
  "lat": -32.045944,
  "lon": 125.150028
 },
 "data": {
  "type": "AMT",
  "n_periods": 100,
  "period_min_s": 0.0001,
  "period_max_s": 2912.71072
 },
 "diagnostics": {
  "median_relative_error": 0.002,
  "remote_reference": true,
  "tipper_available": true,
  "completeness_smoothness_diagnostic": {
   "value": 4.9,
   "basis": "e",
   "note": "not a quality or geological-value judgement"
  },
  "classification": "2-D",
  "skew_beta_median_deg": 1.9,
  "pct_periods_3d": 39,
  "method": "phase-tensor (Caldwell 2004)",
  "note": "screening diagnostic, not an interpretation product"
 },
 "processing": {
  "software": "EMpower",
  "algorithm": null,
  "remote_reference": true,
  "remote_site": "SHS021B",
  "file_written_by": {
   "name": "EMpower",
   "version": "v1.54.2.5"
  },
  "note": "PROJECT NAME: BHPSeahorse\nUNIQUE ID: {b01d02eb-3acc-48c4-b2a0-ab08b78a8b8f}\nPROCESS DATE: 2022-10-04 13:22\nDURATION: 19 h 59 m 35 s \nDECLINATION: 0°\nCOORDINATES: -32° 2' 45.4\", 125° 9' 0.1\"\nGPS (MIN - MAX): 7 - 13\nTEMPERATURE (MIN - MAX): 27° - 37°\nCOMB FILTER: 50HZ\nFINE ROBUST: NONE\nEDITING WORKBENCH\nTOTOAL REJECTED CROSSPOWERS: 34.0418%\nROBUST ALGORITHM: Multiple Coherence, ATTACK: 0.9, RATIO: 60% \nSTATIONS\nELECTRICS\nRECORDING ID: 10194_2022-05-28-050829\nINSTRUMENT TYPE: MTU-5C\nSTATION NAME: ROM018\nOPERATOR: SW\nAZIMUTH: 0\nEX\nTAG: E1\nLENGTH: 80 [m]\nAC: 0.3125 [V]\nDC: -0.00190735 [V]\nNEGATIVE RES: 628.613 [Ω]\nPOSITIVE RES: 974 [Ω]\nSATURATION: 0.271066%\nMIN VALUE: -0.15625 [V]\nMAX VALUE: 0.15625 [V]\nEY\nTAG: E2\nLENGTH: 80 [m]\nAC: 0.3125 [V]\nDC: -0.00396729 [V]\nNEGATIVE RES: 1331.81 [Ω]\nPOSITIVE RES: 980.162 [Ω]\nSATURATION: 0.196527%\nMIN VALUE: -0.15625 [V]\nMAX VALUE: 0.15625 [V]\nMAGNETICS\nRECORDING ID: 10194_2022-05-28-050829\nINSTRUMENT TYPE: MTU-5C\nSTATION NAME: ROM018\nOPERATOR: SW\nAZIMUTH: 0\nHX\nTAG: H1\nSENSOR TYPE: MTC-150\nDETECTED SENSOR TYPE: MTC-150\nAC: 0.625 [V]\nDC: -0.0257874 [V]\nCAL NAME: --- \nSENSOR SERIAL: 57010\nSATURATION: 0.0440431 %\nMIN VALUE: -0.3125 [V]\nMAX VALUE: 0.3125 [V]\nHY\nTAG: H2\nSENSOR TYPE: MTC-150\nDETECTED SENSOR TYPE: MTC-150\nAC: 0.625 [V]\nDC: 0.00656128 [V]\nCAL NAME: --- \nSENSOR SERIAL: 57016\nSATURATION: 0.0266065 %\nMIN VALUE: -0.3125 [V]\nMAX VALUE: 0.3125 [V]\nHZ\nTAG: H3\nSENSOR TYPE: MTC-150\nDETECTED SENSOR TYPE: MTC-150\nAC: 0.337753 [V]\nDC: -0.0654602 [V]\nCAL NAME: --- \nSENSOR SERIAL: 53292\nSATURATION: 0 %\nMIN VALUE: -0.0612403 [V]\nMAX VALUE: 0.276512 [V]\nREFERENCE\nRECORDING ID: 15025_2022-05-28-081409\nINSTRUMENT TYPE: MTU-5C\nSTATION NAME: SHS021B\nOPERATOR: SW\nAZIMUTH: 0\nRX\nTAG: H1\nSENSOR TYPE: MTC-150\nDETECTED SENSOR TYPE: MTC-150\nAC: 1.66667 [V]\nDC: 0.0480652 [V]\nCAL NAME: --- \nSENSOR SERIAL: 57056\nSATURATION: 0.000416811 %\nMIN VALUE: -0.833333 [V]\nMAX VALUE: 0.833333 [V]\nRY\nTAG: H1\nSENSOR TYPE: MTC-150\nDETECTED SENSOR TYPE: MTC-150\nAC: 1.66667 [V]\nDC: 0.0480652 [V]\nCAL NAME: --- \nSENSOR SERIAL: 57056\nSATURATION: 0.000416811 %\nMIN VALUE: -0.833333 [V]\nMAX VALUE: 0.833333 [V]"
 },
 "distribution": {
  "edi_available": true,
  "license": "CC-BY-4.0",
  "edi_path": "edi/seahorse-2022-23/ROMA18.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": "2026-09-28T03:46:37.537752+00:00",
  "input_file": "ROMA18.edi",
  "input_sha256": "e377078392a34c0a40ecced36caad5f7ab26e45acee290a272fb1cf40d1cd840",
  "source": {
   "original_filename": "ROMA18.edi",
   "source_record_id": "BHP_Seahorse_2022_MT.zip!BHP_Seahorse_2022_MT/BHP Seahorse 2022 MT Final Report/Appendix III Final Data (EDI files + plots)/EDI files/Repeats/ROMA18.edi"
  }
 },
 "coordinate_qc": null,
 "canonical_conditioning": [
  "survey.id->seahorse-2022-23",
  "station.id set to the sanitised EMTF-XML Site.id",
  "survey.geographic_name sanitized",
  "station.source_file_preserved_in_site_name",
  "rotation: unknown — writer requires array; zeros written, frame NOT asserted",
  "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: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": 100,
   "phs_xy_median_deg": 43.58,
   "phs_yx_median_deg": -123.68,
   "verdict": "ok"
  },
  "declared_azimuth_deg": 0.0,
  "derotated": false,
  "evidence": {
   "branch": "spectra",
   "emeas_azimuths": {
    "ex": null,
    "ey": null
   },
   "hmeas_azimuths": {
    "hx": 0.0,
    "hy": 90.0
   },
   "rotspec": "0",
   "trot": null,
   "zrot": null
  },
  "frame_served": "declared-zero",
  "impedance_rotation_deg_source": null,
  "tipper_rotation_deg_source": null
 },
 "resources": [
  {
   "id": "edi",
   "kind": "transfer_function",
   "format": "edi",
   "provenance_role": "source",
   "representation_role": "original",
   "path": "edi/seahorse-2022-23/ROMA18.edi"
  },
  {
   "id": "emtfxml",
   "kind": "transfer_function",
   "format": "emtfxml",
   "provenance_role": "derived",
   "representation_role": "alternate",
   "path": "xml/seahorse-2022-23/ROMA18.xml"
  },
  {
   "id": "edi-zip",
   "kind": "archive",
   "format": "zip",
   "path": "bundles/seahorse-2022-23-edi.zip"
  },
  {
   "id": "xml-zip",
   "kind": "archive",
   "format": "zip",
   "path": "bundles/seahorse-2022-23-xml.zip"
  }
 ]
}