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29 sept. - 5 oct. 2020: Expédition au Volcan Yasur - Vanuatu (Mer du Sud)
10-18 oct. 2020: Montagnes de Feu - du Stromboli à l'Etna - Eoliennes + Etna
14-27 nov. 2020: Désert, sels et volcans - Désert de Danakil (Éthiopie)
7-16 déc. 2020: Magic Minutes: Chile Solar Eclipse 2020 - Chile
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Diaporama
Krakatau volcan
Caldera 813 m (2,667 ft.) / Anak Krakatau: 189 m
Sunda Strait, Indonesia, -6.1°S / 105.42°E
Condition actuelle: Activité petite ou avertissement éruption imminente (3 sur 5)
Krakatau webcams / données en temps réel | Reports
Krakatau volcano videos
Krakatau livres | Tours
Eruptions du volcan Krakatau:
1530, 1680-81, 1684, 1883 (Plinian eruption), 1927-30, 1931-32, 1932-34, 1935, 1936, 1937, 1938-40, 1941, 1942, 1943, 1944, 1945, 1946, 1946-47, 1949, 1950, 1952, 1953, 1955, 1958-59, 1959-63, 1965(?), 1969(?), 1972-73, 1975, 1978, 1979, 1980, 1981, 1988, 1992-93, 1994-95, 1996, 1997, 1999, 2000, 2001, 2007-8, April 2009-early 2010, Oct 2010 - March 2011, July-Oct 2011, Jan-May + Sep 2012, 2015(?), 2017, 2018 (22 Dec eruption & tsunami), 2019-ongoing
Style éruptif tipique:
Explosive. Construction of a cinder cone  island (Anak Krakatau) inside the caldera formed by the 1883 eruption. Frequent strombolian activity.
Derniers séismes proches
Voyages au volcan Krakatau
Du Krakatau à Bali (16-jours d'étude à la découverte des volcans de Java, Indonésie)
Rêve Planétaire - Le Tour des Volcans du Monde (4 semaines de découvertes autour du Monde à Hawai'i - Vanuatu - Nouvelle Zélande - Indonésie)
Spécial Volcan Krakatau (expédition pour étudier et observer l'activité du volcan l'Anak Krakatau)

Derniers images satellite

Sentinel hub | Landsat 8
Krakatau volcan
Caldera 813 m (2,667 ft.) / Anak Krakatau: 189 m
Sunda Strait, Indonesia, -6.1°S / 105.42°E
Condition actuelle: Activité petite ou avertissement éruption imminente (3 sur 5)
Krakatau webcams / données en temps réel | Reports
Krakatau volcano videos
Krakatau livres | Tours
Eruptions du volcan Krakatau:
1530, 1680-81, 1684, 1883 (Plinian eruption), 1927-30, 1931-32, 1932-34, 1935, 1936, 1937, 1938-40, 1941, 1942, 1943, 1944, 1945, 1946, 1946-47, 1949, 1950, 1952, 1953, 1955, 1958-59, 1959-63, 1965(?), 1969(?), 1972-73, 1975, 1978, 1979, 1980, 1981, 1988, 1992-93, 1994-95, 1996, 1997, 1999, 2000, 2001, 2007-8, April 2009-early 2010, Oct 2010 - March 2011, July-Oct 2011, Jan-May + Sep 2012, 2015(?), 2017, 2018 (22 Dec eruption & tsunami), 2019-ongoing
Style éruptif tipique:
Explosive. Construction of a cinder cone  island (Anak Krakatau) inside the caldera formed by the 1883 eruption. Frequent strombolian activity.
Derniers séismes proches
Voyages au volcan Krakatau
Du Krakatau à Bali (16-jours d'étude à la découverte des volcans de Java, Indonésie)
Rêve Planétaire - Le Tour des Volcans du Monde (4 semaines de découvertes autour du Monde à Hawai'i - Vanuatu - Nouvelle Zélande - Indonésie)
Spécial Volcan Krakatau (expédition pour étudier et observer l'activité du volcan l'Anak Krakatau)

Derniers images satellite

Sentinel hub | Landsat 8
 

Anak Krakatau actualités volcaniques:

Krakatoa volcano (Sunda Strait, Indonesia): fresh aerial image showing the island's dramatic change in shape

lundi déc. 31, 2018 15:34 | AUTEUR : T

Anak Krakatau island seen 30 Dec 2018 (author unknown / Dongeng Geologi via facebook)
Anak Krakatau island seen 30 Dec 2018 (author unknown / Dongeng Geologi via facebook)
Anak Krakatau island seen 30 Dec 2018 (author unknown / Dongeng Geologi via instagram)
Anak Krakatau island seen 30 Dec 2018 (author unknown / Dongeng Geologi via instagram)
A fresh aerial image from Anak Krakatau has appeared on the very active Volcanoes and Volcanism group on facebook:
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!

update:
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:
---
Source:
Actualités précédentes
Comparison of Anak Krakatau's coast line seen on 29 Dec with a satellite image before the eruption (26 Nov 2018) (image: Sentinel-2 / ESA)
dimanche, déc. 30, 2018
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: ... [details]

jeudi, janv. 01, 1970
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). ... [details]
Krakatoa seen yesterday from the coast - Anak Krakatau is no longer visible, only small ash and steam plumes rising from behind Sertung (image: VSI webcam)
samedi, déc. 29, 2018
The activity at the volcano continues at reduced rate. Steam explosions have been more intermittent and smaller during the past 2 days, generating plumes that rose a few hundred meters only. ... [details]
vendredi, déc. 28, 2018
After almost 6 days of an almost non-stop ash plume to 55,000ft following the devastating collapse, Darwin VAAC reports that activity has finally subsided with only very minor emissions. No updates about local conditions at the moment. [details]
Krakatau with steam explosions seen yesterday (image:  Sutopo Purwo Nugroho @Sutopo_PN / twitter)
jeudi, déc. 27, 2018
The violent explosive activity caused by magma-water interaction continues at the volcano, from the area where the summit cone collapsed on 22 Dec and now exposes the vent to sea water. ... [details]

Anak Krakatau actualités volcaniques:

Krakatoa volcano (Sunda Strait, Indonesia): fresh aerial image showing the island's dramatic change in shape

lundi déc. 31, 2018 15:34 | AUTEUR : T

Anak Krakatau island seen 30 Dec 2018 (author unknown / Dongeng Geologi via facebook)
Anak Krakatau island seen 30 Dec 2018 (author unknown / Dongeng Geologi via facebook)
Anak Krakatau island seen 30 Dec 2018 (author unknown / Dongeng Geologi via instagram)
Anak Krakatau island seen 30 Dec 2018 (author unknown / Dongeng Geologi via instagram)
A fresh aerial image from Anak Krakatau has appeared on the very active Volcanoes and Volcanism group on facebook:
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!

update:
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:
---
Source:
Actualités précédentes
Comparison of Anak Krakatau's coast line seen on 29 Dec with a satellite image before the eruption (26 Nov 2018) (image: Sentinel-2 / ESA)
dimanche, déc. 30, 2018
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: ... [details]

jeudi, janv. 01, 1970
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). ... [details]
Krakatoa seen yesterday from the coast - Anak Krakatau is no longer visible, only small ash and steam plumes rising from behind Sertung (image: VSI webcam)
samedi, déc. 29, 2018
The activity at the volcano continues at reduced rate. Steam explosions have been more intermittent and smaller during the past 2 days, generating plumes that rose a few hundred meters only. ... [details]
vendredi, déc. 28, 2018
After almost 6 days of an almost non-stop ash plume to 55,000ft following the devastating collapse, Darwin VAAC reports that activity has finally subsided with only very minor emissions. No updates about local conditions at the moment. [details]
Krakatau with steam explosions seen yesterday (image:  Sutopo Purwo Nugroho @Sutopo_PN / twitter)
jeudi, déc. 27, 2018
The violent explosive activity caused by magma-water interaction continues at the volcano, from the area where the summit cone collapsed on 22 Dec and now exposes the vent to sea water. ... [details]
 

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