Grönlands issmältning kan frigöra enorma metanlager

14 maj 2026

Rapporterad av AI

Ny forskning visar att smältande glaciärer på Grönland skulle kunna frigöra stora mängder metan som är bundet som hydrater under isen. Forskare varnar för att denna process, som observerats efter den senaste istiden, kan upprepas i takt med att klimatet värms upp.

Forskare ledda av Mads Huuse vid University of Manchester har undersökt seismiska data från 2011 och 2013 samt sedimentprover från Melvillebukten i nordvästra Grönland. De identifierade 50 kratrar på havsbotten, upp till 37 meter djupa, som bildades när smältvatten sköljde bort metanhydrater från sedimenten under det senaste istidsmaximumet för mellan 29 000 och 19 000 år sedan.

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