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Il ghiaccio marino più spesso e vecchio dell'Artico si è spaccato per la prima volta quest'estate. Un fenomeno mai osservato finora che sta preoccupando gli scienziati del Polar Ocean Physics Group dell'università di Cambridge.
A causa dei venti caldi e delle ondate di calore che hanno interessato l'emisfero settentrionale, il ghiaccio pluriennale a nord della Groenlandia - “l’ultimo baluardo” contro il cambiamento climatico – si è staccato allontanandosi dalla costa.
L’evento potrebbe avere gravi conseguenze per la fauna locale e in particolare per l'orso bianco, che sulla superficie gelata caccia, anche se il rischio si potrà valutare solo nella primavera prossima.
ATS/MarGù
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