Rallentare l'estinzione del ghiacciaio del Morteratsch, nei Grigioni, sfruttando le stesse quantità d'acqua da esso perdute a seguito dello scioglimento. È il concetto alla base del progetto promosso dal glaciologo Felix Keller.
L'acqua derivante dal disgelo potrebbe infatti essere in seguito riciclata e convertita in neve, che a sua volta verrebbe utilizzata per ricoprire il ghiacciaio, proteggendolo dai colpi sempre più intensi inferti dal riscaldamento globale.
La trasformazione in neve sarebbe possibile, senza il ricorso a fonti di elettricità, grazie all'energia legata alla pressione esercitata in superficie dalla stessa acqua di disgelo.
Come ricostruire un ghiacciaio
Un progetto senz'altro ambizioso, che implicherà investimenti nell'ordine di due milioni e mezzo di franchi. Metà degli oneri saranno assunti da Innosuisse, l'organismo nazionale per la promozione dell'innovazione.
TG/ARi
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