{
  "id": "disaster/tsunami-harbor-structure-myth",
  "signature": "AI advises sheltering on a concrete pier or harbor wall during a tsunami (structural collapse and debris impact risk)",
  "signature_zh": "AI 建议在海啸期间躲在混凝土码头或海堤上（结构倒塌和碎片撞击风险）",
  "regex": "shelter.*(pier|harbor wall|concrete dock).*tsunami",
  "domain": "disaster",
  "category": "life_threatening",
  "subcategory": null,
  "root_cause": "Concrete piers and harbor walls are engineered for static wave loads, not the dynamic, debris-laden surge of a tsunami; they can collapse or be swept away, and provide no elevation above the inundation zone.",
  "root_cause_type": "generic",
  "root_cause_zh": "混凝土码头和海堤是为静态波浪荷载设计的，而非海啸带来的动态、充满碎片的涌浪；它们可能倒塌或被冲走，且无法提供高于淹没区的高度。",
  "versions": [
    {
      "version": "NOAA TsunamiReady v2.1",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "USGS Tsunami Hazard Assessment 2024",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Believing that concrete structures are inherently stronger than water; they are not designed for horizontal debris impact and can fail suddenly.",
      "fail_rate": 0.65,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Assuming height alone is sufficient; harbor walls are typically only a few meters above sea level and within the inundation zone.",
      "fail_rate": 0.5,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Misinterpreting 'tsunami-safe' signs on some modern piers as applicable to all piers; most are not rated for tsunami forces.",
      "fail_rate": 0.4,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Evacuate to a designated tsunami vertical evacuation structure (e.g., a reinforced concrete building at least 30 feet above sea level) or move inland to high ground. Use the 'Tsunami Evacuation Map' app to identify safe zones.",
      "success_rate": 0.88,
      "how": "Evacuate to a designated tsunami vertical evacuation structure (e.g., a reinforced concrete building at least 30 feet above sea level) or move inland to high ground. Use the 'Tsunami Evacuation Map' app to identify safe zones.",
      "condition": "",
      "sources": []
    },
    {
      "action": "If no structure is available, climb a sturdy, well-anchored tree at least 50 feet above the expected inundation height, but only as a last resort.",
      "success_rate": 0.3,
      "how": "If no structure is available, climb a sturdy, well-anchored tree at least 50 feet above the expected inundation height, but only as a last resort.",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "Evacuate to a designated tsunami vertical evacuation structure (e.g., a reinforced concrete building at least 30 feet above sea level) or move inland to high ground. Use the 'Tsunami Evacuation Map' app to identify safe zones.",
    "If no structure is available, climb a sturdy, well-anchored tree at least 50 feet above the expected inundation height, but only as a last resort."
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://www.tsunami.gov/",
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.85,
  "fix_success_rate": 0.75,
  "resolvable": "partial",
  "first_seen": "2024-03-15",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}