Discover and read the best of Twitter Threads about #sentinel

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#Tchernobyl : dans la nuit du 25 au 26 avril 1986, une série d’erreurs pendant un essai de sécurité entraînent l’explosion du réacteur n°4 et la fusion du cœur. La plus grave catastrophe nucléaire, longtemps la seule classée au niveau 7 sur l’échelle #INES, avant #Fukushima
#Tchernobyl, 2019, 33 ans depuis l’accident. Dites 33 : retour sur le rôle déterminant des #satellites d’observation dans le suivi de la #catastrophe : comme les nuages radioactifs, les satellites ne sont pas arrêtés par les frontières. Un #thread à dérouler… #space #nucléaire
En 2019, il semble facile d’avoir rapidement une image de n’importe quelle région du monde. Ici, la région et la centrale de #Tchernobyl , près de Prypiat, vue le 13/04/19 par le satellite européen #Sentinel2 (#Copernicus). Les images n’ont pas toujours été aussi disponibles…
Read 27 tweets
1/ Here's a bunch of animated time lapses from active volcanoes around the world.

#VolcanoesFromSpace

Data is from #ESA #Sentinel2 satellites. It's processed with the #Copernicus / @sentinel_hub tools.

You ask why? Because I like looking at images from volcanoes and so do you!
2/ Bogoslof Island is the summit of a submarine stratovolcano in the Bering sea. In 2017 it erupted and the island became MUCH bigger. There's going to be some happy puffin and seals there (the ones that didn't burn in lava flows that is)!

#VolcanoesFromSpace #Sentinel2
3/ Manaro Voui is a shield volcano in Vanuatu. Starting in 2017 and still going today it's continuously erupting. People are evacuated.

Chief Tari One of Ambanga has conducted ceremonial offerings but it seems these have not been accepted.

#VolcanoesFromSpace #Sentinel2
Read 15 tweets

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