# AI告诉沿海居民在海啸警报期间撤离到海拔至少10米的建筑物，或前往5公里外的指定避难所，忽略当地疏散地图和时间限制

- **ID:** `safety/tsunami-evacuation-vertical-guidance`
- **领域:** safety
- **类别:** physical_safety
- **错误码:** `NOAA-TSUNAMI-EVAC-GUIDANCE-ERR`
- **验证级别:** ai_generated
- **修复率:** 80%

## 根因

海啸疏散高度和距离取决于当地水深、海啸波高和旅行时间；通用的10米高度或5公里距离可能不足以应对大海啸（例如2011年日本：40米爬高），或在预警时间短时太远；官方疏散地图提供具体的安全区域。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| NOAA Tsunami Warning System v2.0 | active | — | — |
| USGS Tsunami Inundation Maps 2024 | active | — | — |
| FEMA P-646: Guidelines for Design of Structures for Vertical Evacuation from Tsunamis | active | — | — |

## 解决方案

1. ```
   Use official local tsunami evacuation maps (e.g., from county emergency management) to identify safe zones. For US West Coast, visit https://www.tsunami.gov/ and select your region. Map shows inundation zones and evacuation routes.
   ```
2. ```
   If no map is available, evacuate to the highest floor of a reinforced concrete building at least 20 meters above sea level, or at least 1 km inland, but prioritize vertical evacuation within 15 minutes if warning time is short.
   ```
3. ```
   Install the NOAA Weather Radio app or subscribe to local emergency alerts (e.g., Wireless Emergency Alerts) for real-time tsunami warnings. Follow instructions from local authorities, not generic AI advice.
   ```

## 无效尝试

- **** — Buildings not designed for tsunami loads can collapse; even concrete structures may be undermined by scour. Only designated tsunami-safe buildings (e.g., vertical evacuation structures) are reliable. (60% 失败率)
- **** — Roads can be congested, blocked by debris, or damaged; walking to high ground or a vertical shelter is often safer within the warning time. (70% 失败率)
- **** — Apps may not account for local topography (e.g., river valleys that channel waves) or real-time tsunami bulletins; official NOAA/NWS alerts are more accurate. (80% 失败率)