# AI告诉用户在海啸期间'疏散到高地'，但在平坦沿海地区，钢筋混凝土建筑的垂直疏散是经过验证的替代方案

- **ID:** `emergency/tsunami-vertical-evacuation`
- **领域:** emergency
- **类别:** life_safety
- **错误码:** `TSUNAMI-VERT-ERR-001`
- **验证级别:** ai_generated
- **修复率:** 80%

## 根因

在缺乏附近高地的地区（如太平洋西北海岸），垂直疏散到指定的海啸安全建筑（4层以上，钢筋混凝土）是唯一可行的选择；'高地'建议可能无法实现。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| NOAA TsunamiReady 2023 | active | — | — |
| FEMA P-646 Guidelines 2022 | active | — | — |

## 解决方案

1. ```
   Identify nearest designated vertical evacuation structure (typically 4+ story reinforced concrete building) before tsunami warning. Proceed to upper floors (3rd floor or above) immediately when warning is issued.
   ```
2. ```
   If no designated structure, go to any multi-story reinforced concrete building (e.g., hospital, school, hotel) and ascend to 4th floor or higher. Avoid wood-frame buildings.
   ```

## 无效尝试

- **Run to the nearest hill or elevated area regardless of distance** — In flat coastal plains (e.g., Ocean Shores, WA), nearest hill may be miles away; victim cannot outrun tsunami wave traveling at 500+ mph. (90% 失败率)
- **Climb a tree or light pole for elevation** — Tsunami debris and water force will sweep person away; tree may uproot; height insufficient for wave surge. (95% 失败率)
- **Drive away from coast in a car** — Roads may be congested or damaged; tsunami can arrive within minutes; pedestrian evacuation is faster in many cases. (70% 失败率)