·

Short-lived, high-level eruption at Ibu volcano, ash to 13.7 km (45 000 feet) a.s.l., Indonesia

ibu-eruption-indonesia-may-16-2020

A short-lived, high-level eruption took place at Indonesian Ibu volcano, Halmahera at 09:20 UTC on May 16, 2020. The Aviation Color Code was raised to Red.

According to the Darwin VAAC, the eruption to 13.7 km (45 000 feet) above sea level moving S was short-lived and appears to have ceased and detached from the volcano. Volcanic ash is expected to dissipate in 6 to 12 hours.

Height and forecast were based on Himawari-8 imagery acquired 10:20 UTC and model guidance.

Geological summary

The truncated summit of Gunung Ibu stratovolcano along the NW coast of Halmahera Island has large nested summit craters. The inner crater, 1 km (0.62 miles) wide and 400 m (1 312 feet) deep, contained several small crater lakes through much of historical time.

The outer crater, 1.2 km (0.74 miles) wide, is breached on the north side, creating a steep-walled valley.

A large parasitic cone is located ENE of the summit. A smaller one to the WSW has fed a lava flow down the W flank. A group of maars is located below the N and W flanks.

Only a few eruptions have been recorded in historical time, the first a small explosive eruption from the summit crater in 1911.

An eruption producing a lava dome that eventually covered much of the floor of the inner summit crater began in December 1998. (GVP)

Featured image credit: JMA/Himawari-8, RAMMB/CIRA. Acquired 10:20 UTC on May 16, 2020

If you value what we do here, open 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

Your email address will not be published.