Krakatoa volcano (Sunda Strait, Indonesia): fresh aerial image showing the island's dramatic change in shape
Mon, 31 Dec 2018, 15:3415:34 PM | BY: T
Anak Krakatau island seen 30 Dec 2018 (author unknown / Dongeng Geologi via facebook)
A fresh aerial image from Anak Krakatau has appeared on the very active Volcanoes and Volcanism group on facebook:
Anak Krakatau island seen 30 Dec 2018 (author unknown / Dongeng Geologi via instagram)
it shows in more detail what the 29 Dec satellite image already confirmed: the island of Anak Krakatau has now the shape of a 270 deg almost closed crescent, with a water-filled crater in the center where once the 330 m tall summit cone stood (which collapsed on 22 Dec causing the tsunami).
Although the image is not detailed enough, it seems (and it would be expected so after the violent phreatomagmatic activity following the collapse) that virtually all of the island has been covered and reshaped, smoothed out by fresh pyroclastic deposits. What if any of its flora and fauna has survived needs to be found out yet by visiting it.
Happy New Year to all!
This processed satellite image from 28 Dec below shows the change in morphology even clearer, but includes a significant land gain after the collapse as well, which seems to have build most of the southern "arm" of the crescent. Most of the new land is probably due to accumulated material (tephra) from the intense sursteyan activity in the days after the landslide, building a new large tuff ring around the crater:
Bukti tsunami akibat flank collapse yang tak terbantahkan (dalam gambar yg lebih jelas) pic.twitter.com/Cspa7mJa87— Daryono BMKG (@DaryonoBMKG) December 30, 2018
Links / Sources:
Links / Sources:
Sun, 30 Dec 2018, 21:13
Krakatoa volcano (Sunda Strait, Indonesia): new satellite imagery reveal both rapid land loss and growth of Anak Krakatau in detail
A new high-resolution satellite image taken yesterday allows an update on the dramatic effects the 22 Dec collapse has had on Anak Krakatau island: ... Read all
Sun, 30 Dec 2018, 09:22
On 17 Oct, explosions were particularly violent at Anak Krakatau. We show a series of images of a spectacular explosion captured from close range by boat. 2 months later, the cone of Anak Krakatau collapsed into the sea on the evening of 22 Dec 2018, triggering a catastrophic tsunami (more info). Read all