Video of massive rockfall, Evolène, Switzerland


Original Post
Andy Million · Oct 23, 2015 · Murfreesboro TN · Joined Mar 2012 · Points: 60
&feature=youtu.be&t=11s

Another angle here:


shamelessly copied from reddit.

FrankPS · Oct 23, 2015 · Atascadero, CA · Joined Nov 2009 · Points: 15
In the first video, I wonder how the photographer happened to be next to the site right when the rockfall occurred. Must have been scary!

David Gibbs · Oct 23, 2015 · Ottawa, ON · Joined Aug 2010 · Points: 6
That's a big chunk of mountain coming down!

T340 · Oct 23, 2015 · Idaho · Joined Oct 2011 · Points: 0
Holy -$&@!

BigB · Oct 23, 2015 · Red Rock, NV · Joined Feb 2015 · Points: 0
It's was being monitored since 2013, the geologists filming the event camped up there. they predicted it would happen within 48-72hrs. They also evacuated the town and closed the road through the valley beforehand.

Jon Nelson · Oct 23, 2015 · Bellingham, WA · Joined Sep 2011 · Points: 4,505
Bryan,

Do you know how they were able to predict it so well? Was there a big crack at the top that someone noticed was widening?

It may be useful to be able to apply such prediction methods elsewhere.

Allen Sanderson · Oct 23, 2015 · Oootah · Joined Jul 2007 · Points: 1,115
Jon Nelson wrote:Bryan, Do you know how they were able to predict it so well? Was there a big crack at the top that someone noticed was widening? It may be useful to be able to apply such prediction methods elsewhere.
They probably setup a laser monitoring system that measures the movement. There are similar systems for monitoring glacier movement. They also had something similar to measure the growth of the dome in the crater of Mt. St. Helens. There was probably a rapid increase in movement over the past week. Could well have come from fall moisture and cold temps causing just enough expansion to cause the collapse.

BigB · Oct 23, 2015 · Red Rock, NV · Joined Feb 2015 · Points: 0
Not sure how(seismograph?)... article just says they've(geologists) been monitoring it since 2013

Edit: Allen's answer above mine^^ seems more likely

Jon Nelson · Oct 23, 2015 · Bellingham, WA · Joined Sep 2011 · Points: 4,505
Allen Sanderson wrote: They probably setup a laser monitoring system that measures the movement. There are similar systems for monitoring glacier movement. They also had something similar to measure the growth of the dome in the crater of Mt. St. Helens. There was probably a rapid increase in movement over the past week. Could well have come from fall moisture and cold temps causing just enough expansion to cause the collapse.
Thanks.
Yes, this does seem likely. My reason though for asking, is that I imagine the complete story of the discovery and prediction method would be pretty interesting.

Walter Galli · Oct 23, 2015 · Sint Maarten · Joined Sep 2015 · Points: 1,096
Scary shit..

Guideline #1: Don't be a jerk.

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