Series of eruptions at Anak Krakatau volcano, Indonesia

anak krakatau volcano 1619z august 2 2022 f

Volcanic activity at Anak Krakatau increased on August 2, 2022, with the first of several eruptions starting at 08:49 UTC. It had a maximum amplitude of 33 mm and lasted 32 seconds, ejecting ash up to 1.5 km (4 900 feet) above the peak. The Aviation Color Code remains at Orange.

The next eruption took place at 11:36 UTC. It had a maximum amplitude of 40 mm and lasted 99 seconds, according to the Anak Krakatau Volcano Observatory.1

New eruptions were recorded at 12:06 UTC (maximum amplitude 45 mm, duration 95 seconds), 15:49 UTC (maximum amplitude 54 mm, duration 66 seconds), 16:19 UTC (maximum amplitude 41 mm, duration 45 seconds), 17:34 UTC (maximum amplitude 36 mm, duration 39 seconds), and 18:15 UTC (maximum amplitude 50 mm, duration 50 seconds).

The Darwin VAAC reported discrete volcanic ash up to 2 100 m (7 000 feet) above sea levels.

The Aviation Color Code remains at Orange.

sentinel-2 anak krakatau volcano august 2 2022 true color
Anak Krakatau on August 2, 2022 (true color). Credit: Copernicus EU/Sentinel-2, EO Browser, The Watchers
sentinel-2 anak krakatau volcano august 2 2022 false color
Anak Krakatau on August 2, 2022 (false color). Credit: Copernicus EU/Sentinel-2, EO Browser, The Watchers
sentinel-2 anak krakatau volcano august 2 2022 swir
Anak Krakatau on August 2, 2022 (SWIR). Credit: Copernicus EU/Sentinel-2, EO Browser, The Watchers

Volcanic activity at Anak Krakatau intensified in April 2022, culminating with intense explosive eruptions on April 24:

Geological summary

The renowned volcano Krakatau (frequently misstated as Krakatoa) lies in the Sunda Strait between Java and Sumatra. The collapse of the ancestral Krakatau edifice, perhaps in 416 CE, formed a 7 km (4.3 miles) wide caldera.

Remnants of this ancestral volcano are preserved in Verlaten and Lang Islands; subsequently Rakata, Danan and Perbuwatan volcanoes were formed, coalescing to create the pre-1883 Krakatau Island. Caldera collapse during the catastrophic 1883 eruption destroyed Danan and Perbuwatan volcanoes and left only a remnant of Rakata volcano.

This eruption, the 2nd largest in Indonesia during historical time, caused more than 36 000 fatalities, most as a result of devastating tsunamis that swept the adjacent coastlines of Sumatra and Java. Pyroclastic surges traveled 40 km (25 miles) across the Sunda Strait and reached the Sumatra coast.

After a quiescence of less than a half-century, the post-collapse cone of Anak Krakatau (Child of Krakatau) was constructed within the 1883 caldera at a point between the former cones of Danan and Perbuwatan. Anak Krakatau has been the site of frequent eruptions since 1927.2

References:

1 Anak Krakatau volcano updates – PVMBG – August 2, 2022

2 Krakatau – Geological summary – GVP

Featured image credit: PVMBG

If you value what we do here, create your ad-free account and support our journalism.

Share:

Related articles

Producing content you read on this website takes a lot of time, effort, and hard work. If you value what we do here, select the level of your support and register your account.

Your support makes this project fully self-sustainable and keeps us independent and focused on the content we love to create and share.

All our supporters can browse the website without ads, allowing much faster speeds and a clean interface. Your comments will be instantly approved and you’ll have a direct line of communication with us from within your account dashboard. You can suggest new features and apps and you’ll be able to use them before they go live.

You can choose the level of your support.

Stay kind, vigilant and ready!

$5 /month

  • Ad-free account
  • Instant comments
  • Direct communication
  • New features and apps suggestions
  • Early access to new apps and features

$50 /year

$10 /month

  • Ad-free account
  • Instant comments
  • Direct communication
  • New features and apps suggestions
  • Early access to new apps and features

$100 /year

$25 /month

  • Ad-free account
  • Instant comments
  • Direct communication
  • New features and apps suggestions
  • Early access to new apps and features

$200 /year

You can also support us by sending us a one-off payment using PayPal:

Leave a reply