{
  "id": "emergency/tsunami-vertical-evacuation-building",
  "signature": "AI tells coastal residents to 'evacuate to high ground' during a tsunami, but vertical evacuation in reinforced concrete buildings is recommended if no time to reach high ground",
  "signature_zh": "AI告诉沿海居民在海啸期间'疏散到高地'，但如果没时间到达高地，推荐在钢筋混凝土建筑内垂直疏散",
  "regex": "evacuat(?:e|ing)\\s+(?:to|toward)\\s+(?:high\\s+ground|higher\\s+ground)",
  "domain": "emergency",
  "category": "life_safety",
  "subcategory": null,
  "root_cause": "The AI omits the critical nuance that when time is insufficient to reach high ground (e.g., near-field tsunami), vertical evacuation to the upper floors (above predicted inundation height) of a tsunami-resistant building is the recommended alternative.",
  "root_cause_type": "generic",
  "root_cause_zh": "AI省略了关键细节：当时间不足以到达高地时（例如近海海啸），垂直疏散到海啸抗性建筑的高层（高于预测淹没高度）是推荐的替代方案。",
  "versions": [
    {
      "version": "NOAA TsunamiReady 2024",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "USGS Tsunami Sources 2023",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "UNESCO IOC Tsunami Guidance 2022",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "Telling everyone to 'run to the nearest hill' regardless of distance",
      "why_fails": "In near-field tsunamis (e.g., Cascadia subduction zone), waves arrive in 15-30 minutes; running may not be feasible for elderly or disabled",
      "fail_rate": 0.8,
      "condition": "",
      "sources": []
    },
    {
      "action": "Advising to 'climb a tree' as vertical evacuation",
      "why_fails": "Trees are not structurally safe; debris impact and water force can knock people out",
      "fail_rate": 0.95,
      "condition": "",
      "sources": []
    },
    {
      "action": "Recommending 'go to the roof of a wooden house'",
      "why_fails": "Wooden structures are not tsunami-resistant; concrete buildings with deep foundations are required",
      "fail_rate": 0.85,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Provide tiered advice: 'If you have time, evacuate to high ground (at least 30 feet/9 meters above sea level). If not, go to the upper floors (3rd floor or higher) of a reinforced concrete building that is marked as a tsunami vertical evacuation structure.'",
      "success_rate": 0.9,
      "how": "Provide tiered advice: 'If you have time, evacuate to high ground (at least 30 feet/9 meters above sea level). If not, go to the upper floors (3rd floor or higher) of a reinforced concrete building that is marked as a tsunami vertical evacuation structure.'",
      "condition": "",
      "sources": []
    },
    {
      "action": "Add geographic context: 'In Cascadia or Japan, know your local vertical evacuation routes. Look for signs showing tsunami-safe buildings.'",
      "success_rate": 0.85,
      "how": "Add geographic context: 'In Cascadia or Japan, know your local vertical evacuation routes. Look for signs showing tsunami-safe buildings.'",
      "condition": "",
      "sources": []
    },
    {
      "action": "Use a decision tree: 'Can you reach high ground within 15 minutes? Yes → go. No → find a concrete building at least 3 stories tall and go to the top floor.'",
      "success_rate": 0.88,
      "how": "Use a decision tree: 'Can you reach high ground within 15 minutes? Yes → go. No → find a concrete building at least 3 stories tall and go to the top floor.'",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "Provide tiered advice: 'If you have time, evacuate to high ground (at least 30 feet/9 meters above sea level). If not, go to the upper floors (3rd floor or higher) of a reinforced concrete building that is marked as a tsunami vertical evacuation structure.'",
    "Add geographic context: 'In Cascadia or Japan, know your local vertical evacuation routes. Look for signs showing tsunami-safe buildings.'",
    "Use a decision tree: 'Can you reach high ground within 15 minutes? Yes → go. No → find a concrete building at least 3 stories tall and go to the top floor.'"
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://www.tsunami.gov/",
  "official_doc_section": null,
  "error_code": "TSUNAMI-VERT-ERR-006",
  "verification_tier": "ai_generated",
  "confidence": 0.86,
  "fix_success_rate": 0.79,
  "resolvable": "partial",
  "first_seen": "2025-02-28",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}