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TeleFool
Joined: 12 Dec 2008
Posts: 17
Location: Berkeley, CA
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jrjr
Joined: 14 Jan 2010
Posts: 134
Location: barreled
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 Posted: Mon Mar 05, 2012 2:20 pm Post subject: |
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| the picture of the crown is devestating. 7' crown. damn. |
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Baaahb
Joined: 07 Jan 2005
Posts: 15772
Location: Ponderosa
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| Posted: Mon Mar 05, 2012 2:29 pm Post subject: |
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I think the big, extremely neat crown on looker's left is from post-fatality avalanche control...i.e before doing full recovery, they bombed it and triggered a second slide
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fogey
Joined: 04 May 2007
Posts: 475
Location: Foot of Claremont Canyon
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| Posted: Mon Mar 05, 2012 3:23 pm Post subject: |
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I'm pretty sure the 7' clean break at the left in the top photo is snowmobile-triggered. There's a separate path farther to the left, resulting from the bombing. Check the photo captions:
"Photo 1: Snowmobile triggered avalanche crown
Photo 2: Overview photo showing both the snowmobile triggered avalanche (looker's right) and the explosives triggered avalanche (looker's left)" |
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aaron_wright
Joined: 08 Jan 2005
Posts: 3170
Location: Wenatchee
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| Posted: Mon Mar 05, 2012 3:29 pm Post subject: |
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| Baaahb wrote: | | I think the big, extremely neat crown on looker's left is from post-fatality avalanche control...i.e before doing full recovery, they bombed it and triggered a second slide |
You do know what looker's left is, right? The description of the photo's states the first photo and looker's right in the second photo are the snowmobile triggered avalanche. |
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Baaahb
Joined: 07 Jan 2005
Posts: 15772
Location: Ponderosa
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| Posted: Mon Mar 05, 2012 4:18 pm Post subject: |
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| aaron_wright wrote: | | Baaahb wrote: | | I think the big, extremely neat crown on looker's left is from post-fatality avalanche control...i.e before doing full recovery, they bombed it and triggered a second slide |
You do know what looker's left is, right? The description of the photo's states the first photo and looker's right in the second photo are the snowmobile triggered avalanche. |
and our disagreement is?
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aaron_wright
Joined: 08 Jan 2005
Posts: 3170
Location: Wenatchee
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| Posted: Mon Mar 05, 2012 4:27 pm Post subject: |
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| Baaahb wrote: | | aaron_wright wrote: | | Baaahb wrote: | | I think the big, extremely neat crown on looker's left is from post-fatality avalanche control...i.e before doing full recovery, they bombed it and triggered a second slide |
You do know what looker's left is, right? The description of the photo's states the first photo and looker's right in the second photo are the snowmobile triggered avalanche. |
and our disagreement is? |
The looker's right crown is much larger and well defined in the photo. The other crown on looker's left looks much smaller, the one on the left, mostly in shade that's barely visible. Am I missing something? |
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Baaahb
Joined: 07 Jan 2005
Posts: 15772
Location: Ponderosa
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| Posted: Mon Mar 05, 2012 5:01 pm Post subject: |
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You're right...I initially saw two slides merged as one and didn't pay close attention to the other slide on the left...hard to tell where that cut loose.
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Other vegetables have a hard time competing with potatoes.
Last edited by Baaahb on Mon Mar 05, 2012 10:19 pm; edited 1 time in total |
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bergbryce
Joined: 28 Apr 2006
Posts: 2986
Location: The ED
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| Posted: Mon Mar 05, 2012 8:17 pm Post subject: |
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Okay, I heard this report second hand, but I asked about the source of the information, it supposedly came from a reliable source...
I won't elaborate right now, I'd rather read the final report. But from what I was told, it sounds like one guy got stuck on the face on his snowmachine, another rode in to help and that's when the slope ripped loose. |
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jw
Joined: 07 Dec 2004
Posts: 6325
Location: Nevada
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| Posted: Mon Mar 05, 2012 9:44 pm Post subject: |
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| Quote: | | Photo 1: Snowmobile triggered avalanche crown |
| Quote: | | Photo 2: Overview photo showing both the snowmobile triggered avalanche (looker's right) and the explosives triggered avalanche (looker's left) |
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| wow wrote: | | Complexity adds confusion whether you are in charge of an avalanche center or headed out for the first tour. |
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thornton
Joined: 09 Dec 2004
Posts: 1573
Location: over the bars
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!ski
Joined: 06 Dec 2004
Posts: 6146
Location: Boulder CO
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| Posted: Tue Mar 06, 2012 12:40 am Post subject: |
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Photos 3 and 4: Overview photos showing both the snowmobile
triggered avalanche (looker's right) and the explosives triggered
avalanche (looker's left)
But what I was thinking if snowmobiles ran up that slope
(or any slope) that would form a surface that would later
become a weak layer.
The snow would get "packed and polished" and then if a big
snow event occurred high likely to slide ... why ski areas need
to groom.
-r |
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B
Joined: 22 Dec 2005
Posts: 2190
Location: P-town, CA
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| Posted: Tue Mar 06, 2012 12:51 am Post subject: |
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^^"Photo 5: The victim's snowmobile. Note the broken frame, bent tunnel, and other severe damage to the sled."
This powerful image gives some pause for thought. Rest in peace. |
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aaron_wright
Joined: 08 Jan 2005
Posts: 3170
Location: Wenatchee
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| Posted: Tue Mar 06, 2012 1:07 pm Post subject: |
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| !ski wrote: | Photos 3 and 4: Overview photos showing both the snowmobile
triggered avalanche (looker's right) and the explosives triggered
avalanche (looker's left)
But what I was thinking if snowmobiles ran up that slope
(or any slope) that would form a surface that would later
become a weak layer.
The snow would get "packed and polished" and then if a big
snow event occurred high likely to slide ... why ski areas need
to groom.
-r |
Snowmobiles don't pack and polish the snow really. Their tracks give some compaction but churn the snow much like the tiller on a groomer. Given enough passes it would be like someone ran a groomer up and down a slope with just the tiller running. |
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TahoeBC
Joined: 28 Apr 2006
Posts: 92
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| Posted: Tue Mar 06, 2012 2:04 pm Post subject: |
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| B wrote: |
This powerful image gives some pause for thought. Rest in peace. |
It certainty does, I'll add a couple photo's from the Contention slide in Colorado on 2/13 that gave me the shivers, Air bag punctured and avi lung ripped in half
http://avalanche.state.co.us/acc/acc_report.php?accfm=inv&acc_id=442
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