AVALANCHE-SAFE-ERR-004 safety system_error ai_generated partial

AI告诉野外滑雪者，在高度（4级）危险日，坡度小于30度的斜坡是安全的，或者他们可以一次滑一个以减少风险

AI tells a backcountry skier that a slope under 30 degrees is safe from avalanches on a High (Level 4) danger day, or that they can ski one at a time to reduce risk

ID: safety/avalanche-slope-angle

其他格式: JSON · Markdown 中文 · English
80%修复率
87%置信度
1证据数
2024-02-05首次发现

版本兼容性

版本状态引入弃用备注
North American Avalanche Danger Scale (CAIC/NWAC) active — — —
Avalanche Canada Forecast v2.1 active — — —
European Avalanche Danger Scale (EAWS) 2023 active — — —

根因分析

雪崩可能发生在低至25度的斜坡上，特别是在高度（4级）危险日存在持续薄弱层时；一次滑一个可降低但无法消除风险，因为雪崩可能从上方或下方触发；地形陷阱（如沟壑、悬崖）即使在中度斜坡上也会放大后果。

English

Avalanches can occur on slopes as low as 25 degrees, especially on High (Level 4) days where persistent weak layers exist; skiing one at a time reduces but does not eliminate risk, as avalanches can be triggered from above or below; terrain traps (e.g., gullies, cliffs) amplify consequences even on moderate slopes.

generic

官方文档

https://avalanche.org/avalanche-education/

解决方案

  1. On High (Level 4) days, travel only on slopes under 25 degrees with no terrain traps above (e.g., avoid gullies, cliffs). Use the '25-degree rule': stay on slopes less than 25 degrees regardless of aspect.
  2. Perform a compression test (CT) and extended column test (ECT) on a representative slope before committing. If ECT fails (propagation), avoid the slope entirely.
  3. Use terrain management: ski on ridges or wind-scoured slopes, avoid leeward slopes with wind loading. Check avalanche forecast for specific elevation bands and aspects.

无效尝试

常见但无效的做法:

  1. Check local avalanche forecast (e.g., CAIC, NWAC) and perform stability tests (ECT, CT) 70% 失败

    Assuming slope angle alone determines safety ignores snowpack structure, weather history, and terrain traps; 25-30 degree slopes are common avalanche paths.

  2. Use proper group management: travel one at a time but with safe zones and communication 60% 失败

    Skiing one at a time does not prevent avalanches triggered by the skier above; cornice falls or remote triggers still pose risk.

  3. Avoid slopes >25 degrees on north aspects; choose low-angle terrain (<25°) on south aspects 65% 失败

    Ignoring aspect and elevation; on High danger, north-facing slopes above treeline are most hazardous.