Backcountry skills中文
Winter and Snow: Crampons, Ice Axes, Avalanches and Hypothermia
Winter is not \"wear more layers\". It is a different system: traction, an axe you can actually use, the avalanche trio, a short day and a real hypothermia plan.
In short
Winter travel needs its own kit and its own skills: boots that take crampons, an ice axe you have practised with, transceiver, probe and shovel in avalanche terrain, and a plan built around a short day. Crampons go on hard snow and ice, not on rock. Avalanche burial is a partner rescue, not a rescue-team rescue — if you have the gear but cannot search with it, you have not mitigated the risk.
Winter changes the failure modes. In summer a mistake costs you an hour; in winter it can cost you the day, and the margin for error shrinks with the daylight.
Equipment
- Boots: stiff, insulated, waterproof. Crampons must match the boot — dry-fit them at home, not on the slope.
- Ice axe: length, leash and technique are course material. A trekking pole is not an ice axe.
- Avalanche terrain: transceiver, probe, shovel, plus a companion-rescue course. Without all three and the training, stay out.
- Layers: base, insulation, windproof and waterproof shell. Spare dry gloves and socks. Goggles and sun protection.
Movement
- Snow travel: kick steps, rest step, descent technique. Crampons on hard snow and ice only — walking on rock in them is how people break ankles.
- Ice axe and self-arrest must be practised on a slope. Video is not instruction.
- Whiteout and blowing snow: navigate, rope up, or retreat. Do not walk on feel.
- Short days: plan backwards from sunset, and carry a headlamp with spare batteries.
Avalanche
- Read the local forecast before departure: slope angle, aspect, elevation, snowpack, recent weather.
- Do not travel alone in avalanche terrain, and do not treat "someone skied it" as proof of stability.
- Burial rescue is a partner rescue: beacon search, probe, dig. Practise it. The rescue team arrives far too late.
- An airbag pack does not replace judgement or training.
Hypothermia and frostbite
- Hypothermia: dry layers, insulation from the ground, warm drinks if alert, medical care. No alcohol, no vigorous rubbing.
- Frostbite: numbness, white or hard skin means rewarm and seek care. Do not rub with snow and do not hold it to a fire.
- Dehydration and low blood sugar happen in winter too. Carry hot drinks and high-calorie food.
Do not
- Go onto hard snow or ice without crampons and an axe.
- Enter avalanche terrain without the trio or the training.
- Push through a whiteout or solo to save time.
- Confuse "I bought the gear" with "I can use it".