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Brinikler

Undervandsisikaler, isrør, der ligner stalaktitter, når ned fra havisen til bunden af havet. Brinikler er til stede i meget koldt havvand med normal saltholdighed, hovedsagelig i arktisk og antarktisk.Når hav is er dannet, går stoffer, der opløstes i vand, ikke ind i iskrystallerne, og øger dermed lokal saltholdighed. Denne saltlage kan danne vandløb, der strømmer nedad mod havbunden.

Brinikler har lavere temperatur end det omkringliggende vand, så et tyndt lag is kan danne sig på overfladen af strømmen og dermed bygge et rør. Til sidst, røret rører bunden og strækker sig udad og dræper alt på sin vej (det er derfor, det er også kaldet ”finger af død”).

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