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nestled jewel

Uploaded by: tahomus

Sunday May 5, 2013

High Sierra, Bishop, CA

Caption: Alpine tarns turn blue as the snow melt pools on top of the ice. This little glacial tarn below the Crest looks like it's been strafed with meteors.

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5. tahomus
3:41 AM GMT on May 12, 2013
Thanks for the comments guys. Now, I'm no expert, but most of our Sierra tarns seem to show little of the glacial flour you mention, compared to the Rockies and other higher latitudes, probably because our glaciers are mere remnants, barely active. Where as all our high lakes, whether or not they are beneath a glacier, show this characteristic blue hue, but only during the spring melt. The cobalt blue visible in the 'meteor holes' in this tarn is the usual sky blue color of these lakes in the summer time. What I've noticed through the years of wandering the high country around here, is that the light blueish tint visible here around the edge of the lake is from snow melt water pooling on the surface of the ice, refracting the alpine sunlight. As the day warms it spreads and grows and then recedes at night. Sometimes skiing across these spots, you'll actually drop through a thin surface patina of ice, through the melt water down to the hard frozen winter ice below; a little 'cardiac stress test' compliments of the mountains. So, I think, as is so often the case in 'disagreements', we are both correct. But I could be wrong. cheers
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4. randel52
4:41 PM GMT on May 11, 2013
gotta disagree Wilma,Rock flour held in a colloidal suspension makes the water in the tarn opaque and gives it its color. Each glacier produces a distinct color of melted water depending upon the composition of the rock flour being delivered to the melting face of the glacier. the color runs though the entire tarn.
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3. randel52
4:41 PM GMT on May 11, 2013
the color runs through the entire Tarn
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2. randel52
4:40 PM GMT on May 11, 2013
gotta disagree Wilma,Rock flour held in a colloidal suspension makes the water in the tarn opaque and gives it its color. Each glacier produces a distinct color of melted water depending upon the composition of the rock flour being delivered to the melting face of the glacier. the color run though the entire tarn.
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1. Kennebunker
11:02 AM GMT on May 11, 2013
What an unusual image - really has impact that the only blue is in the rim of that pool!
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