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The satellite images show what was left of the Anak Krakatau volcano, which collapsed on December 22, 2018 in Indonesia, causing a tsunami that killed at least 430 people and left thousands homeless.
Image of Anak Krakatau volcano almost two weeks after the collapse of tsunami. Anak Krakatau volcano almost two weeks after the Tsunami collapse (01/02/019)
The poor weather conditions on the Sunda Strait, connecting the Java Sea and the Indian Ocean, have prevented the work of the various satellites on the planet's orbit in search of [images optics.
But the team at Planet Labs, an American company that develops and operates earth observation minisatellites, was able to find windows in the clouds.
Images captured by their platforms, Dove and SkySat, reveal the magnitude of the collapse of the volcano, which shows how the shape of the island changed after the natural disaster.
What was once a crater at the top of a 340-meter high structure opened wide in a small bay.
The Indonesian Disaster Relief Agency said that the Anak Krakatau volcano had lost more than two-thirds of its volume (150 to 170 million cubic meters). It is thought that much of it has crept into the sea during the colossal landslide that caused the tsunami.
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The Minisatellite Dove records the volcano images one week after the disaster disaster (30/12/2018)
Planet Labs, Inc., based in San Francisco, operates one of the largest satellite constellations in the world.
The WAN increases the chances of seeing the surface when clouds cover the target to be recorded.
Dove Minisatellites, operated by Planet Labs, capture soil details of more than 3 meters – which is considered a medium resolution; SkySat platforms are capable of high resolution, capturing details greater than 72 cm.
SkySat was responsible for the photo at the top of this page, taken on Wednesday, January 2nd.
Satellite images obtained immediately after the disaster came from a radar spacecraft – were the first signs of the collapse of the Anak Krakatau volcano.
Radar instruments can "cross" the cloud, but offer a very different view of optical satellites and require a specific ability to be interpreted.
Image of Anak Krakatau volcano before collapse, captured by the Dove minisatellite (17/12/2018)
Photo: Planet Labs, Inc. / BBC News Brazil
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