{
  "schema": "cnsbii-v23-seismic-lab/2",
  "project": "verso_il_23_irpinia_1980",
  "generated_on": "2026-10-17",
  "historical_reference": {
    "label": "Epicentro di riferimento CPTI15 v4.0 · 23 novembre 1980",
    "latitude": 40.842,
    "longitude": 15.283,
    "magnitude": {
      "type": "Mw",
      "value": 6.81,
      "uncertainty": 0.1
    },
    "source_id": "INGV-ASMI-EVENT-19801123",
    "origin_time_utc": "1980-11-23T18:34:52Z",
    "italian_local_time": "1980-11-23T19:34:52+01:00",
    "catalogue": "CPTI15 versione 4.0, tramite archivio ASMI INGV",
    "interpretation": "Coordinate e orario sono parametri di catalogo; non descrivono tutte le rotture di faglia."
  },
  "current_observation": {
    "same_origin_endpoint": "/osservatorio-sismico/api/eventi.php",
    "collection": "national_events",
    "upstream": "INGV through CNSBII Observatorio cached acquisition",
    "refresh_seconds": 600,
    "default_radius_km": 100,
    "available_radii_km": [
      50,
      100,
      150
    ],
    "distance_method": "Haversine great-circle distance from the historical CPTI15 reference point",
    "sort": "event time descending",
    "display_limit": 12,
    "filter_contract": {
      "radius_km": [
        50,
        100,
        150
      ],
      "time_windows": [
        "feed",
        "24h",
        "7d",
        "30d"
      ],
      "time_window_anchor": "feed.updated_at when valid; browser current time only as fallback",
      "review_filters": [
        "all",
        "reviewed",
        "automatic"
      ],
      "url_parameters": {
        "radius": "50|100|150",
        "period": "feed|24h|7d|30d",
        "review": "all|reviewed|automatic"
      }
    },
    "snapshot_export": {
      "format": "CSV UTF-8, semicolon delimited",
      "generation": "client-side from the current same-origin public feed after active filters",
      "persistence": "none",
      "scope": "working snapshot only; not a historical INGV archive and not a persistent CNSBII dataset"
    }
  },
  "method": {
    "classification": "ELABORAZIONE CNSBII",
    "not_prediction": true,
    "not_hazard_map": true,
    "not_risk_map": true,
    "statement": "The live layer is only a geographic reading of events currently available in the CNSBII national feed around the historical reference point. It does not imply continuity with the 1980 sequence.",
    "filter_order": [
      "feed pubblico CNSBII dopo controllo di qualità dei dati",
      "valid coordinates",
      "Haversine distance",
      "selected time window",
      "selected review status",
      "event time descending"
    ],
    "time_window_limit": "Time windows are applied only to events currently present in the feed; they do not guarantee historical completeness of the selected interval.",
    "export_limit": "The CSV is a browser-generated snapshot of the current filtered feed and must retain the source timestamp and filter metadata; it is not a predictive product.",
    "historical_time_note": "Gli orari del CFTI sono indicati in GMT/UTC. Per novembre 1980, l’ora legale italiana non era in vigore: l’orario CET è UTC+1. I cataloghi possono adottare arrotondamenti diversi."
  },
  "source_ids": [
    "INGV-ASMI-EVENT-19801123",
    "INGV-SORVEGLIANZA-SISMICA",
    "INGV-DATA-WEBSERVICES"
  ]
}