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Una forte tempesta solare ha iniziato a colpire la Terra lunedì e potrebbe causare interruzioni alle reti elettriche e ai sistemi satellitari, oltre a innescare spettacolari aurore boreali, anche in Svizzera.
Secondo il Centro di previsione meteorologica spaziale USA, il potente fenomeno ha causato una tempesta geomagnetica di livello 4 su una scala di 5 ieri ma perderà intensità nel corso della giornata.
Il fenomeno immortalato sopra una Davos illuminata dal WEF
È la più potente dal 2003 quando la “tempesta di Halloween” causò blackout in intere zone della Svezia e danneggiò le infrastrutture energetiche in Sudafrica. Fenomeni di tale intensità sono rari e sono legati all’attività solare.
La tempesta attuale è stata innescata da una forte eruzione solare verificatasi domenica, ha spiegato il Centro. Le particelle solari espulse perturbano il campo magnetico terrestre, provocando talvolta aurore ma anche interferenze nelle comunicazioni ad alta frequenza, problemi ai satelliti e sbalzi di tensione nella rete elettrica.
L'aurora boreale dall'Ucraina agli Stati Uniti
Telegiornale 11.05.2024, 20:00
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