# AI 建议被雪崩掩埋时大声呼救以吸引救援者（氧气流失和冰雪阻音）

- **ID:** `disaster/avalanche-shout-myth`
- **领域:** disaster
- **类别:** life_threatening
- **验证级别:** ai_generated
- **修复率:** 75%

## 根因

被雪掩埋时大声呼救会浪费宝贵的氧气，且声音被雪层阻隔，无效；救援者使用信标和探杆，而非听觉。

## 解决方案

1. ```
   Create an air pocket by cupping hands over mouth before snow settles, then remain still to conserve oxygen. Use an avalanche transceiver (beacon) for signaling.
   ```
2. ```
   If near surface, poke a hand or ski pole through snow to create a visual marker; do not waste energy shouting.
   ```

## 无效尝试

- **** — Shouting causes hyperventilation and CO2 buildup, reducing consciousness time from ~15 min to under 5 min. (95% 失败率)
- **** — Snow absorbs sound; even a 1m depth muffles shouts to inaudibility for rescuers >2m away. (90% 失败率)