superfrosts

Noun

superfrost (countable and uncountable, plural superfrosts)

1. (rare) Groundwater that is found immediately above the permafrost layer, which seasonally thaws, but is kept frozen more of the year due to the cold from the permafrost layer.
   • In the same category, one encompasses waters of multi-yearly superfrost talics, which exist thanks to the thermal effect of surface waters. The water of the active layer occurs on permafrost soil, which makes up the water confining basement, and propagate in lower forms of topography and on large...1993, A. M. Galperin, Anatoliĭ Moiseevich Galʹperin, V. S. Zaytsev, Yu. A. Norvatov, Aleksandrovich Norvatov, Hydrogeology and Engineering Geology: Geotechnika - Selected Translations of Russian...
2. An exceptionally severe frost.
   • Unprecedented solar flares bombard the earth. The planet's magnetic field vanishes. Raging down the glacier valleys from the polar plateau, the Katabatic winds unleash Condition One: blizzard, superfrost and white outs.1982, Crawford Kilian, Icequake, Berkley Books, →ISBN, page 275