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EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > FIRN
Definition:
Rounded, well-bonded snow that is older han one year (from NSIDC glossary). A
permeable aggregate of small ice grains with densities greater than 0.55 up to
0.82 where begins glacial ice.
Reference:
Glossary of Glacier Terms, Northeastern Illinois University
http://ebeltz.net/glacier/glacglos.html
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