The recent post about the questions Duke had for the ABS Avalanche backpack has attracted the interest of our resident adventure guide, Jason Hendricks, aka The Adventurist. In the comments section of that post he asks,
Alright, Mary. You have piqued my interest. What he!! [ed] is an ABS Avalanche backpack? What is it used for? Have you made another post concerning this? It is a bit intriguing that here might be something out there that I have never heard of-at least I don’t think.
I have to admit I thought for a moment about screwing with him, but after yelling at my kids who have been out of school far too long I just don’t have the creative energy to do it. So to answer the question seriously, here is where Jason and you can find more information about the ABS Avalanche backpack.
The Lowdown on the ABS Avalanche Backpack
To answer your question very basically, Jason, the backpack is a life-saving device used by mountain sledders (and others I would imagine) designed to keep them atop the avalanche and prevent suffocating when the downslide settles. At least that’s what I uderstand it to be; I only ride trails, so it’s not something I have a use for but some of my readers (obviously) do.
Here is how the maker, Mountain Safety Sysytems Ltd, explains it:
An avalanche consists of different particles of snow. Those particles move underneath each body and push it to the surface by rotating until the avalanche slows down. This fact and the change of direction of the avalanche are the reason why approximately half of all avalanche victims end up on top of the avalanche….
A completely different scenario exists for those who do not end up on the surface of the avalanche. Once the avalanche slows down, rotation and lifting abilities also slow down. The victim cannot reach the surface anymore due to the higher density and lesser volume. In most cases this burial is deadly.
With the ABS you have 150 liters more volume …
Once activated, the ABS equalizes the volume and density of the victim relative to the surrounding snow by working on the principle of “inverse particles” .
As with a life vest in the water, the victims swims on the surface of the avalanche. The added volume of 150 liters has been calculated to be needed for cold, dry and loose snow. If the snow is denser, wetter and heavier less volume is needed. The statistics show that all victims carried down by a moving avalanche stayed on top and survived the incident (see the statistics) .
You can learn more about the products at the ABS Avalanche Backpack website. And yes, we did talk about it here a while back; this post on SledChix blog talks about the new terms for distribution in North America and changes to the contract Klim has as its distributor.
Hope I was successful at telling you something you didn’t already know!