I nowhere found so beautiful...

I nowhere found so beautiful and big snow crystals as above Uskovnica, on the altitude of some 1300m. After many peaceful days moisture was condensing slowly, forming big, clear crystals.

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Bor

Bor - Oct 4, 2004 12:58 pm - Voted 10/10

uau Vid!

Amazing!

Vid Pogachnik

Vid Pogachnik - Oct 4, 2004 3:02 pm - Hasn't voted

Re: uau Vid!

I lack on this picture some object, other than crystals. But nothing natural was there :-(

tomi

tomi - Oct 4, 2004 3:51 pm - Voted 10/10

great image!

beautiful, Vid.

Vid Pogachnik

Vid Pogachnik - Oct 5, 2004 4:50 am - Hasn't voted

Re: great image!

Thanks! I can't remember how big these crystals were. Perhaps 1 cm or even more...

Vid Pogachnik

Vid Pogachnik - Oct 5, 2004 11:10 am - Hasn't voted

English word for this?

I was wrong in the pic caption. Actually this is not snow. It's condensed water, frozen on the surafce - in this case on snow. How's that called in English?

brenta

brenta - Oct 5, 2004 11:41 am - Voted 10/10

Re: English word for this?

I guess rime or frost.

Colonelpyat

Colonelpyat - Oct 8, 2004 2:54 am - Voted 10/10

Re: English word for this?

Great shot! Looks like surface hoar to me. Beautiful but deadly. A lot of avalanches are triggered on buried layers of this stuff.

Vid Pogachnik

Vid Pogachnik - Oct 8, 2004 8:06 am - Hasn't voted

Re: English word for this?

Yes, indeed! Great explanation!

Ski Mountaineer

Ski Mountaineer - Nov 29, 2006 10:32 pm - Voted 10/10

Re: English word for this?

Yes, this is surface hoar (usually not related to depth hoar as stated below - depth hoar is a product of snow metamorphism within the snowpack), and not rime.
Surface hoar crystals are created when the air cools to below its dew point, and vapour from the over-saturated air deposits onto the snow surface. The resulting crystals have a feathery, plate-like or sometimes needle-like shape, resulting in a very low strength.
Buried under snow surface hoar is a thin (in this case not even that thin) but weak of layer with low shear strength - and easy to overlook in snow profiles when really thin.

Rime on the other hand develops when super-cooled water (water drops colder than 0°C) hits a solid object and freezes onto it (mostly in windy conditions) - so this is a different process then surface hoar build-up.

Great picture, I never saw a better surface hoar picture before. I might want to use that for future presentation in relation to avalanches.

Cheers!!
Peter

Vid Pogachnik

Vid Pogachnik - Nov 30, 2006 8:22 am - Hasn't voted

Re: English word for this?

Hey, Peter, thanks for additional great explanation! If you need a high resolution picture, just let me know (I guess it's anyway only 1600x1200 pix).

Ski Mountaineer

Ski Mountaineer - Dec 2, 2006 9:27 pm - Voted 10/10

Re: English word for this?

Hi Vid!

Yes, this would be great. Should I need it, I will get back to you.

Cheers,
Peter

nguy33

nguy33 - Oct 5, 2004 6:06 pm - Voted 10/10

Great Work

Terrific, one of the coolest pics ive seen on SP. It is like a forest of ice. Great perspective!

Vid Pogachnik

Vid Pogachnik - Oct 6, 2004 7:03 am - Hasn't voted

Re: Great Work

Thanks! As I said - it would need some object so set an eye on it. But anyway...

livioz

livioz - Oct 6, 2004 11:23 am - Voted 10/10

wonderful example...

..of dendritic growth!

rokaj

rokaj - Oct 10, 2004 9:13 am - Voted 10/10

Frost

Magnificent. regards ROK

wuedesau

wuedesau - Oct 20, 2004 5:33 am - Voted 10/10

Incredible

Incredible wood of ice crystals and perfectly captured!

The largest I have seen have been in an ice cave measuring about 20cm.

Vid Pogachnik

Vid Pogachnik - Oct 20, 2004 9:57 am - Hasn't voted

Re: Incredible

Ufff, 20 cm! It's amazing. So it depends on the speed - if it's freezing really slowly, they are bigger.

Eric Sandbo

Eric Sandbo - Feb 16, 2006 6:02 pm - Voted 9/10

Hoar frost

In the US it's called "hoar frost", or if it's deep between layers of the snowpack, it's "depth hoar", and something to be frightened of. Beautiful photo of it. I've never gotten close enough for a shot like that. If you have a tripod to allow a long exposure, stop you lense way down (high f-stop number), and the colored sparkles in sunlight will be revealed. When the lens is wide open, the different colors blend and are lost.

Gumpie

Gumpie - Mar 21, 2006 1:07 am - Voted 10/10

Skiing Glass...

...have you ever skied through frost crystals like that...it sounds like breaking glass. Fantastic shot!

Vid Pogachnik

Vid Pogachnik - Mar 21, 2006 9:09 am - Hasn't voted

Re: Skiing Glass...

Thanks! Yes, skiing through it sounds strange :-)

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