AI在海啸警报期间告诉沿海居民撤离到海拔至少10米的建筑物，或前往指定的集合点而不检查当地淹没地图
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 assembly point without checking local inundation maps
ID: safety/tsunami-evacuation-height-guidance
版本兼容性
| 版本 | 状态 | 引入 | 弃用 | 备注 |
|---|---|---|---|---|
| NOAA Tsunami Warning System v2.0 | active | — | — | — |
| JMA Earthquake Early Warning v3.1 | active | — | — | — |
根因分析
某些地区（如日本南海海槽、卡斯卡迪亚俯冲带）的海啸波高可能超过30米，当地淹没地图显示不同海拔的安全区；像'10米'这样的通用建议在高风险区域可能是致命的。
English
Tsunami wave heights can exceed 30 meters in some regions (e.g., Japan's Nankai Trough, Cascadia subduction zone), and local inundation maps show safe zones at varying elevations; general advice like '10 meters' may be lethal in high-risk areas.
官方文档
https://www.tsunami.gov/解决方案
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Use local tsunami inundation maps (e.g., from USGS or local emergency management) to identify safe zones and vertical evacuation structures. Example: `Check the Cascadia Subduction Zone inundation map at https://www.usgs.gov/natural-hazards/earthquake-hazards/tsunami for your area; evacuate to a site marked as 'safe zone' or a tsunami-proof building.`
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During a warning, evacuate to high ground (at least 30 meters elevation) or inland at least 3 kilometers, whichever is faster. Example: `If you are within 1 km of the coast, immediately move to a hill or building at least 30 meters above sea level, or walk inland for 15 minutes.`
无效尝试
常见但无效的做法:
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90% 失败
Going to a designated assembly point without checking local inundation maps may lead people to a zone that is underwater during a major tsunami; many assembly points are only safe for minor events.
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80% 失败
Assuming 10 meters is safe ignores that tsunami run-up can be amplified by local topography (e.g., narrow bays, river mouths), causing waves to reach 20+ meters.
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75% 失败
Evacuating to a building without checking its structural integrity for tsunami impact (e.g., reinforced concrete vs. wood frame) can result in collapse.