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{
  "type": "object",
  "title": "Eruption",
  "required": [
    "volcanoId"
  ],
  "properties": {
    "vei": {
      "type": [
        "integer",
        "null"
      ],
      "description": "Volcanic Explosivity Index (0-8)"
    },
    "endDate": {
      "type": [
        "string",
        "null"
      ],
      "description": "Eruption end date (ISO 8601 or year string)"
    },
    "startDate": {
      "type": [
        "string",
        "null"
      ],
      "description": "Eruption start date (ISO 8601 or year string)"
    },
    "volcanoId": {
      "type": "string",
      "x-ref-type": "Volcano",
      "description": "Volcano record identifier"
    },
    "description": {
      "type": [
        "string",
        "null"
      ],
      "description": "Brief description of the eruption"
    },
    "eruptionType": {
      "type": [
        "string",
        "null"
      ],
      "description": "Eruption type (e.g. Confirmed, Uncertain)"
    }
  },
  "description": "A volcanic eruption event with date range, explosivity index, and eruption type."
}