MSS to open tomorrow saturday nov 12th
- Thread starter Frankontour
- Start date
I knew that would open a can of worms here...
Tuckerman detail:
Originally Posted by Powdr
Some more requests:
Tuckerman Ravine Routes:
1 - 38.7 degrees
2 - 44.0 degrees
3 - 44.6 degrees
4 - 48.1 degrees
5 - 48.3 degrees
6 - 46.8 degrees
7 - 43.5 degrees
8 - 42.8 degrees
9 - 31.4 degrees
10- 30.3 degrees
Routes http://timefortuckerman.com/routes.html
LEGEND 1 - Left Gully
2 - Chute Variation South
3 - The Chute
4 - Chute Variation North
5 - Center Gully South
6 - Center Gully North
7 - The Icefall
8 - The Lip
9 - The Sluice
10 - Right Gully
The whole eastern steep thread on Epic: http://forums.epicski.com/showthread.ph ... tern+steep
My 2 cents on the western steep discussion on Epic http://forums.epicski.com/showthread.php?t=30361&page=5:
Some description, URL to download, and examples of Google Earth here: http://www.firsttracksonline.com/boa...pic.php?t=1097 .
It's separate software you need to download, and many older computers can't handle it. Once you have the program, go to Tools, click Measure and you can draw a line on the map and a pop-up box tells you the length of the line. At any time the latitude, longitude and altitude of the point where the cursor is located are shown at the bottom of the map. You can even measure dogleg chutes by adding two lines above and below the turn. Then you type the Google Earth data into Excel and use =180/PI()*ASIN(vert/Google distance) to get the angle. The yellow line on Google Earth is the hypotenuse (Frank's inclined line) and the difference in altitude is the opposite, thus arcsin is the function you want to get slope angle.
I find the calculations to be very sensitive to yellow line distance. I used a minimum of .10 mile (528 feet), but the numbers don't settle down until you get up around .20 mile. Las Lenas has a whole bunch like Christmas Bowl, longer than 4000 feet in distance with average steepness over 30 degrees, and a couple that sustain 40 for over 1000 vertical. I didn't find anything here that was over 40 degrees for as much as 1000 vertical. I have Big Couloir at Big Sky as 44.95 degrees for 746 vertical and Pipeline above Snowbird as 50.15 degrees for 608 vertical.
Big Couloir is the scariest run that I have ever skied personally. Much of that was due to less than ideal snow above the dogleg. The line drawn [in Epic thread] on Alta's Mt. Baldy is Little Chute. Google Earth has it at the same steepness as Main Chute at 41 degrees for 500-600 vertical. But the narrowness and fall consequences make Little Chute much more intimidating. I would not have considered Little Chute when I skied Main Chute in 1990. Coverage in Little Chute in last year's huge snowpack made it look doable while viewing from Collins, but I never got up there to see from the top.
The EpicSki poster Powdr is using some kind of commercial mapping software that may be more precise than Google Earth.
Tuckerman detail:
Originally Posted by Powdr
Some more requests:
Tuckerman Ravine Routes:
1 - 38.7 degrees
2 - 44.0 degrees
3 - 44.6 degrees
4 - 48.1 degrees
5 - 48.3 degrees
6 - 46.8 degrees
7 - 43.5 degrees
8 - 42.8 degrees
9 - 31.4 degrees
10- 30.3 degrees
Routes http://timefortuckerman.com/routes.html
LEGEND 1 - Left Gully
2 - Chute Variation South
3 - The Chute
4 - Chute Variation North
5 - Center Gully South
6 - Center Gully North
7 - The Icefall
8 - The Lip
9 - The Sluice
10 - Right Gully
The whole eastern steep thread on Epic: http://forums.epicski.com/showthread.ph ... tern+steep
My 2 cents on the western steep discussion on Epic http://forums.epicski.com/showthread.php?t=30361&page=5:
Some description, URL to download, and examples of Google Earth here: http://www.firsttracksonline.com/boa...pic.php?t=1097 .
It's separate software you need to download, and many older computers can't handle it. Once you have the program, go to Tools, click Measure and you can draw a line on the map and a pop-up box tells you the length of the line. At any time the latitude, longitude and altitude of the point where the cursor is located are shown at the bottom of the map. You can even measure dogleg chutes by adding two lines above and below the turn. Then you type the Google Earth data into Excel and use =180/PI()*ASIN(vert/Google distance) to get the angle. The yellow line on Google Earth is the hypotenuse (Frank's inclined line) and the difference in altitude is the opposite, thus arcsin is the function you want to get slope angle.
I find the calculations to be very sensitive to yellow line distance. I used a minimum of .10 mile (528 feet), but the numbers don't settle down until you get up around .20 mile. Las Lenas has a whole bunch like Christmas Bowl, longer than 4000 feet in distance with average steepness over 30 degrees, and a couple that sustain 40 for over 1000 vertical. I didn't find anything here that was over 40 degrees for as much as 1000 vertical. I have Big Couloir at Big Sky as 44.95 degrees for 746 vertical and Pipeline above Snowbird as 50.15 degrees for 608 vertical.
Big Couloir is the scariest run that I have ever skied personally. Much of that was due to less than ideal snow above the dogleg. The line drawn [in Epic thread] on Alta's Mt. Baldy is Little Chute. Google Earth has it at the same steepness as Main Chute at 41 degrees for 500-600 vertical. But the narrowness and fall consequences make Little Chute much more intimidating. I would not have considered Little Chute when I skied Main Chute in 1990. Coverage in Little Chute in last year's huge snowpack made it look doable while viewing from Collins, but I never got up there to see from the top.
The EpicSki poster Powdr is using some kind of commercial mapping software that may be more precise than Google Earth.
sven
New member
I think he was referring to Center Gully in Huntington Ravine - something I'd guess is unskiable 95% of the time based on what he said, but he said that hes indeed heard of it being skied before...
Yeah, I cant imagine something too much steeper than the top of left gully... I was hiking that 2 years ago in total sugar snow without an ice axe or any equipment that could have been useful, and had a real gut wrenching slide downward from there.... Good thing I was able to self arrest with the tail of my ski on my backpack! I definitely wont ever forget that....
Sven
Yeah, I cant imagine something too much steeper than the top of left gully... I was hiking that 2 years ago in total sugar snow without an ice axe or any equipment that could have been useful, and had a real gut wrenching slide downward from there.... Good thing I was able to self arrest with the tail of my ski on my backpack! I definitely wont ever forget that....
Sven
Frankontour
New member
Ok, I have something to admit...
according to what I calculated yesterday, the steepest trail of Killington would be... Double Dipper.... according to Google Earth, still...
I measured an average of 32,1 degrees for a part of the pitch of about 500' high. I'm very surprised, though, as this trail doesn't look that steep... I guess it's because the pitch is quite long, then the vision gets used of the steepness and recognize it less...
... not sure...
according to what I calculated yesterday, the steepest trail of Killington would be... Double Dipper.... according to Google Earth, still...
I measured an average of 32,1 degrees for a part of the pitch of about 500' high. I'm very surprised, though, as this trail doesn't look that steep... I guess it's because the pitch is quite long, then the vision gets used of the steepness and recognize it less...
... not sure...
Frankontour
New member
Honestly, I'm still wondering things, because Double Dipper really didn't seem steep and yes, it's the large trail with the canyon quad over it...
but I admit that there is no way West 70 has 32 degrees...
but I admit that there is no way West 70 has 32 degrees...