UKC

Cross loading

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 NottsRich 05 Feb 2019

This photo has been used as an example of cross loading. Has the wind been blowing from left to right, or from right to left?

https://images.articulate.com/f:jpg|png,a:retain,b:fff/rise/courses/pLi0j79...

 

 

 Jim Fraser 05 Feb 2019
In reply to NottsRich:

Looks like features are scoured on the right. That means that is the direction the find is coming from.

OP NottsRich 05 Feb 2019
In reply to Jim Fraser:

That's what I thought. Scoured on the right of the ridges, and deposited on the left of the ridges, i.e. wind is right to left.

 

This is the text that accompanies the image:

Lee slopes are not always at the top of a slope. Here you can see where the wind has swept across the mountain face (left to right), overloading the side of the vertical gullies. This is called cross loading.

 

Is it wrong, or am I missing something? It's from here:

https://rise.articulate.com/share/E8y2HjI41iXpw2R3LR8EhkzonCgW5b8O#/lessons...

 

First picture shows a cornice. Click right twice to see the cross loading bit.

 

 im off 05 Feb 2019
In reply to NottsRich:

Wonder if it is referring to right and left as you do with glaciers....I agree...wind coming from right of pic as look at it

 pass and peak 05 Feb 2019
In reply to NottsRich:

I would say the text is wrong, looks like right to left wind direction to me!

 Trangia 05 Feb 2019
In reply to NottsRich:

Right to left. Snow accumulation occurs on the lee side of obstacles (ie the ridges/aretes}

 McHeath 05 Feb 2019
In reply to NottsRich:

Definitely right to left; maybe the photo got reversed accidentally. Don't think it means orographic or right and left, there'd be no point in that here, and it's always specified if used, to avoid misunderstandings.

 kathrync 05 Feb 2019
In reply to NottsRich:

From the right of the photo to the left of the photo...

The problem with left and right is that it depends which way you are facing.  If they meant skier's left they are correct, but it would have been helpful to specify.

Or perhaps the photos was flipped accidentally...

Or perhaps they are just wrong

OP NottsRich 05 Feb 2019
In reply to kathrync:

Thanks all, I'm not going mad after all!


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