{
  "id": "safety/tsunami-evacuation-vertical-height",
  "signature": "AI tells a coastal resident during a tsunami warning to evacuate to a building at least 10 meters above sea level, or to go to a designated shelter exactly 1 km inland",
  "signature_zh": "AI在海啸警报期间告诉沿海居民疏散至海拔至少10米的建筑物，或前往恰好1公里内陆的指定避难所",
  "regex": "(?:tsunami|海啸).*(?:evacuat|疏散).*(?:10 meter|10米|1 km|1公里|inland|内陆)",
  "domain": "safety",
  "category": "physical_safety",
  "subcategory": null,
  "root_cause": "Tsunami inundation height depends on local bathymetry, coastal geometry, and earthquake magnitude; a fixed 10-meter elevation or 1-km distance from shore ignores the variability of wave run-up (can exceed 30 meters in some regions) and the fact that the safest evacuation is to high ground (natural or structural) as high as possible, not to a pre-determined arbitrary height or distance.",
  "root_cause_type": "generic",
  "root_cause_zh": "海啸淹没高度取决于当地海底地形、海岸几何形状和地震震级；固定的10米高程或离岸1公里距离忽略了波浪爬高的可变性（某些地区可能超过30米），且最安全的疏散是尽可能高的高地（自然或结构），而非预定任意高度或距离。",
  "versions": [
    {
      "version": "tsunami-warning-system-v1.0",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "coastal-evacuation-guidelines-2023",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "User assumes all tsunamis are the same size; Okushiri 1993 had 31m run-up, 2004 Indian Ocean had 50m in places",
      "fail_rate": 0.85,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "User relies on outdated paper maps that don't show current tsunami hazard zones; many coastal areas update maps annually",
      "fail_rate": 0.7,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Check local tsunami evacuation maps from official sources (e.g., USGS, NOAA, Japan Meteorological Agency) for your specific location; use the 'Tsunami Evacuation Route' signposts in coastal towns",
      "success_rate": 0.9,
      "how": "Check local tsunami evacuation maps from official sources (e.g., USGS, NOAA, Japan Meteorological Agency) for your specific location; use the 'Tsunami Evacuation Route' signposts in coastal towns",
      "condition": "",
      "sources": []
    },
    {
      "action": "If no map is available, evacuate vertically (go to the highest floor of a reinforced concrete building at least 3 stories tall) or horizontally to a hill at least 30 meters above sea level; do not stop at 10m",
      "success_rate": 0.85,
      "how": "If no map is available, evacuate vertically (go to the highest floor of a reinforced concrete building at least 3 stories tall) or horizontally to a hill at least 30 meters above sea level; do not stop at 10m",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "Check local tsunami evacuation maps from official sources (e.g., USGS, NOAA, Japan Meteorological Agency) for your specific location; use the 'Tsunami Evacuation Route' signposts in coastal towns",
    "If no map is available, evacuate vertically (go to the highest floor of a reinforced concrete building at least 3 stories tall) or horizontally to a hill at least 30 meters above sea level; do not stop at 10m"
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://www.ready.gov/tsunamis",
  "official_doc_section": null,
  "error_code": "SAFETY-TSUNAMI-EVAC-001",
  "verification_tier": "ai_generated",
  "confidence": 0.88,
  "fix_success_rate": 0.85,
  "resolvable": "true",
  "first_seen": "2023-11-01",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}