Sometimes in the summer months, small pools occur at the polygon`s corners of the patterned permafrost ground. These little lakes could become up to 3 m deep and 30 m in diameter. Driven by gravity, water flows along the polygon`s rims from one pool to the other, so that the pools get connected by a stream. Scientists call it beaded drainage. This phenomenon is typical for thawing permafrost.


TITLE |
BEADED STREAM, MACKENZIE DELTA, CANADA |
LOCATION |
Mackenzie Delta, Canada |
DATE |
July 2005 |
HEIGHT |
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TECHNIC |
Hasselblad body, Zeiss lens |
FORMAT |
medium format, 6 x 6 |
REMARK |
aerial image |