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(in arctic or subarctic regions) the layer of soil, above the permafrost, that thaws during the summer.
Based on the Random House Dictionary, © Random House, Inc. 2014.
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of permafrost, the uppermost ground layer, thaws in the summer and freezes in the winter.
Plastic solar cells, no matter how well designed, have intrinsic limits dictated by the polymers that make up their
Until about two years ago, the companies who make silicon wafers weren't able to make the
Surface soils called the
thaw out each summer and refreeze in winter.
Modeling results can be highly dependent on this
Once that box is selected a new
is added to the drop down menu under map layers.
In this structure, the
is oriented in registry with the nucleating surface.
Click the greyed out select tool beside a layer name to make it the
Immediately above the permafrost may be a transitional zone and above that, reaching to the land surface, is the
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