What is Remotely Triggered Avalanche?

I spent almost a few months at Kicking horse in the BC rockies during our horrible drought and one day we went hiking beyond the super bowl and ski patrol was traversing the ridge as well and we talked to them for alittle bit and they said there was a slide down the ridge a ways and they wanted to check out the damage so after hearing that we decided to play it safe and cut around this huge alpine bowl then traverse into a chute. Well when are first frend started traversing into the bottom of the bowl it Caused the whole thing to release at the top and luckly he noticed us screaming and waving and stoped litteraly a few feet from the slide path and it was a huge snow river that ripped trees out and went down more then a thousand feet by far the most deadly slide I have ever seen .
That contienetal snow pack goes so fast

I believe this is what caused the death of Craig Kelly (pro snowboarder who was developing his guiding skills in the Revelstoke area at the time).
During a traverse by the lead group, the snow suddenly settled with a tremendous force whic caused a first avalanche. The energy from the first slide traveled laterally and caused a second & third slide. It was the third slide that took the group of which Kelly was a part of. There's a nice photo and illustration in the April 2003 Outside magazine about that incident..

I've triggered (or had friends trigger) a number of slabs remotely around here.

My friend was travelling along the ridge top when he remotely triggered this one near Rainy Pass:


In January near Stevens Pass, I triggered one from gentle terrain, which released a slab on a knoll about 100 feet above me.  I heard a faint collapsing sound, but didn't notice I'd done anything, until I saw debris sliding down towards me.

And then there was also this one

Also, I can recall one high avy danger near Granite mtn, when we were skiing a lower angle ridge, and the bowl next to it released as we skied by.

I think whenever you hear whoomping is a good indicator that your movements might be transmitted quite aways...