Thwaitesglaciärens shelfis närmar sig losslitning i Antarktis

Antarktis Thwaitesglaciär förlorar sin östra shelfis då stora sprickor sprider sig över den flytande strukturen. Utvecklingen hotar att påskynda glaciärens flöde och bidra till globala havsnivåhöjningar under de kommande decennierna.

Thwaites östra shelfis täcker cirka 1 500 kvadratkilometer och är 350 meter tjock. Satellitobservationer visar att shelfisen spricker snabbt kring sin förankringspunkt och längs grundlinjen där glaciären möter havet. Flödeshastigheterna har tredubblats sedan januari 2020 och nådde drygt 2 000 meter per år i januari 2026, med ytterligare acceleration noterad under de efterföljande månaderna.

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