Staying Alive in Avalanche Terrain

anchors areas aspect avalanche accidents avalanche debris avalanche fatalities avalanche path avalanche professionals avalanche skills avalanche terrain backcountry bed surface bonds bottom Bruce Tremper buried weak layers Celsius Chapter climates climbers cold collapsing continental climates cornice crystals dangerous depth hoar dry snow elevations faceted snow Fesler Figure forms fracture Graupel hard slabs human-triggered avalanches inclinometer instability lanche loading melt meters mountain natural avalanches percent persistent weak layers probe radiation rain crust recrystallization rescue ridge Roger Atkins Routefinding safe shear shovel ski pole skiers slab avalanches slide slope cuts sluffs snow avalanches snow grain snow stability snow surface snowboarders snowmobile snowpack snowpit snowpit tests steep slope storm strength sun crust surface hoar temperature gradient Temperature inversions tend test slope trees trigger an avalanche trigger avalanches trigger point unstable snow usually Utah warm Wasatch Range weather wet avalanches wet snow wind slabs