can you tell a sink?

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can you tell a sink?

Postby Herman Miller » Sep 19, 2005 2:34 am

im sorry to bother a prestigious group like yeall :wink:
i was looking through some pictures and found one that looked strange in that the bottom isnt contoured as it should be
http://www.rubymountains.org/img741.jpg
in yealls opinion is this something that might go or is just another alpine lake.
also i have no aspirations to dive it i was just curious, my wife says no cave diving :wink:
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Herman Miller
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Postby kelly » Sep 19, 2005 3:41 am

Hard to tell from the picture,and not really knowing the area. Are sink holes common to this region? Does this freeze during the winter?

One way to find out short of diving is to drop in a thermometer. In our region surface water maybe warmer,but once ground water is reached it will be at the consistent temperature for ground water in the region. I've known of some people who use infrared film during the winter because springs and sinks will show up as hot spots compared to the surrounding terrain.
Last edited by kelly on Sep 20, 2005 3:33 am, edited 2 times in total.
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Postby Squirrel Girl » Sep 19, 2005 5:10 am

That's a picture of a tarn. It's a lake in a glacially carved bowl called a cirque. It's typical of them to have a berm at the downhill end which forms a natural dam which holds the water in the tarn.

Beautiful!
Barbara Anne am Ende

"Weird people are my people."
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Postby Herman Miller » Sep 19, 2005 8:44 pm

well thank you for the replies after looking at this picture and considering the glaciation in the past i can see it for what it is, though i must say sinkholes do dot the southwest but this particular area i do not think is populated by many sinks
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