Nilas

Nilas – eller “ny is” er et af indledende faser af havisdannelse, hovedsagelig på rolige farvande. Det er et kontinuerligt, tyndt (mindre end 10 centimeter tykt) islag, en elastisk skorpe med mat og mørk overflade, der bliver lysere, når den bliver tykkere. Nilas udvikler sig fra efterfølgende nedadgående vækst. Skive-tynde islapper glider over hinanden og danner flåder af tykkere is.

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