Beautiful

lokie

Well-Known Member
It just seems too perfect to me for that. Probably photoshopped.
What process caused this amazing effect in Pleneau Bay, Antarctica? Photograph by Sander Klaassen.

imgur link and the Original National Geographic link to the photo in question.

Iceberg in Pleneau Bay, Antarctica




snowhorse420

8 years ago·edited 8 years ago

Antarctic program employee here... They are formed by water runoff from the top of the berg. The runoff forms gullies and streams similar a trellace pattern seen in the headwaters of river systems. As the berg get lees buoyant it rises and the streams incise forming "nik points". The berg in the photo must have been a flat sheet that broke off without chunking out. That formed a uniform drainage pattern. I've never seen one a defined as good as that one though...
edit** I have pics I've taken if you guys want em...
edit** I didn't look at the picture clearly enough. It is from different layers in the snow, not a trellace drainage pattern. **smacks forehead
edit** sorry about spelling and errors I was updating from my iPad... I guess what is going on in the picture is something interesting that is likely just the result of a number of different of factors. The best answer is likely "I don't know".
It definitely looks like an ice shelf. and not a berg. I"ll post some pics I've taken of the Ross ice shelf...
Edit** : penguin party on berg: Imgur Ross ice shelf: Imgur Glacier ice contacting sea ice: Imgur Shackleton's Hut: Imgur

https://www.reddit.com/r/askscience/comments/135lri
 

raratt

Well-Known Member
What process caused this amazing effect in Pleneau Bay, Antarctica? Photograph by Sander Klaassen.

imgur link and the Original National Geographic link to the photo in question.

Iceberg in Pleneau Bay, Antarctica




snowhorse420

8 years ago·edited 8 years ago

Antarctic program employee here... They are formed by water runoff from the top of the berg. The runoff forms gullies and streams similar a trellace pattern seen in the headwaters of river systems. As the berg get lees buoyant it rises and the streams incise forming "nik points". The berg in the photo must have been a flat sheet that broke off without chunking out. That formed a uniform drainage pattern. I've never seen one a defined as good as that one though...
edit** I have pics I've taken if you guys want em...
edit** I didn't look at the picture clearly enough. It is from different layers in the snow, not a trellace drainage pattern. **smacks forehead
edit** sorry about spelling and errors I was updating from my iPad... I guess what is going on in the picture is something interesting that is likely just the result of a number of different of factors. The best answer is likely "I don't know".
It definitely looks like an ice shelf. and not a berg. I"ll post some pics I've taken of the Ross ice shelf...
Edit** : penguin party on berg: Imgur Ross ice shelf: Imgur Glacier ice contacting sea ice: Imgur Shackleton's Hut: Imgur

https://www.reddit.com/r/askscience/comments/135lri
I stand corrected.
 
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