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Dec 7, 2014
19,689 notes
nubbsgalore:
“ striped icebergs form as meltwater refreezes in crevasses atop glaciers before air bubbles can become trapped in the ice later calved into icebergs, or when supercooled seawater freezes inside cracks beneath an ice shelf, which then...
duthion
nubbsgalore:
“ striped icebergs form as meltwater refreezes in crevasses atop glaciers before air bubbles can become trapped in the ice later calved into icebergs, or when supercooled seawater freezes inside cracks beneath an ice shelf, which then...
oyvind tangen
nubbsgalore:
“ striped icebergs form as meltwater refreezes in crevasses atop glaciers before air bubbles can become trapped in the ice later calved into icebergs, or when supercooled seawater freezes inside cracks beneath an ice shelf, which then...
paul lee
nubbsgalore:
“ striped icebergs form as meltwater refreezes in crevasses atop glaciers before air bubbles can become trapped in the ice later calved into icebergs, or when supercooled seawater freezes inside cracks beneath an ice shelf, which then...
john weller
nubbsgalore:
“ striped icebergs form as meltwater refreezes in crevasses atop glaciers before air bubbles can become trapped in the ice later calved into icebergs, or when supercooled seawater freezes inside cracks beneath an ice shelf, which then...
steve nichol
nubbsgalore:
“ striped icebergs form as meltwater refreezes in crevasses atop glaciers before air bubbles can become trapped in the ice later calved into icebergs, or when supercooled seawater freezes inside cracks beneath an ice shelf, which then...
walter huber
nubbsgalore:
“ striped icebergs form as meltwater refreezes in crevasses atop glaciers before air bubbles can become trapped in the ice later calved into icebergs, or when supercooled seawater freezes inside cracks beneath an ice shelf, which then...
youri loof

nubbsgalore:

striped icebergs form as meltwater refreezes in crevasses atop glaciers before air bubbles can become trapped in the ice later calved into icebergs, or when supercooled seawater freezes inside cracks beneath an ice shelf, which then becomes visible when the iceberg breaks off and flips. 

over time, the weight of accumulated snow contorts and curves these blue bands of ice, as does erosion from waves and wind. dust and volcanic ash falling on the iceberg can can darken the ice, while dissolved organic compounds entering from below can shade it towards cyan. 

accumulated snow also compresses air bubbles trapped in the iceberg, thus preventing them from otherwise interfering with the passage of light. and because water absorbs photons from the red end of the visible spectrum much better than the blue end, bubble free ice takes on a blue colour. 

photos by (click pic) duthion, oyvind tangen, steve nicol, john weller, youri loof, paul lee, walter huber

Source: nubbsgalore
Reblogged from e-r-i-r-i-deactivated20170107
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19,689 notes

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