Mt. Agung Volcano In Bali Awakens: Where To Find Live Updates

Mount Agung (Gunung Agung), is a stratovolcano on one of the Lesser Sunda Islands of Indonesia known as Bali and along the Pacific Ring of Fire and began experiencing increased activity in September 2017.

ADVERTISEMENT

The volcano has been largely dormant since its catastrophic eruption in 1963 which killed an estimated 1,500 people.  In September 2017 Mt. Agung experienced an increase in seismic activity which forced surrounding residents to evacuate in the interim.

The seismic activity decreased in October and early November until a phreatic eruption on November 21st caused residents to evacuate again.  The phreatic eruption was a precursor to a magmatic eruption on November 25th and in the days since Mt. Agung is showing no signs of quieting in the near future and the area remains on high alert.

Tectonics

Bali and its neighboring islands make up a volcanic arc known as the Sunda Arc.  This west-to-east trending chain of islands is home to many of the world’s most active volcanoes.  The tectonics underlying the Sunda arc are a type of plate boundary known as a convergent boundary.   Convergent boundaries have a subduction zone and are well known for producing explosive volcanic activity.  This is because the subducting (diving) plate contains water and at certain depth and temperature, the magma (or molten rock) becomes volatile thus producing volcanic eruptions.

“Schematic diagram of the formation of a continental arc.” by Booyabazooka (Wikipedia) is licensed under CC0

Eruptions and Impact

Volcanic eruptions are measured by their volume of material ejected, eruption cloud height and extent of destruction by using the Volcanic Explosivity Index (VEI). Notable volcanic eruptions in history from Indonesian islands include the 1815 Mount Tambora (VEI=7) eruption and the supervolcanic eruption of Toba (VEI=8)~75,000 years ago.

ADVERTISEMENT

To date, a VEI of 8 is the highest score given to an eruption event and induces what is known as a volcanic winter which is a period of cooler global temperature due to the volcanic ash particles in the stratosphere and the sulfur dioxide (S02) gas emitted.  These periods of abnormally cooler temperatures can have a catastrophic effect such as livestock death and deforestation, to name just a few.

Other destructive, and often deadly, impacts of an eruption are due to pyroclastic flows and lahars.  Pyroclastic flows and lahars travel rapidly ahead of an eruption and can wipe out anything in their path, including vegetation, livestock, homes, and humans.  Residents of Bali have been experiencing lahars in recent days since Mt. Agung began rumbling.

For live updates on Mt. Agung activity and nearby volcanoes visit MAGMA Indonesia.

ADVERTISEMENT

Comments

READ THIS NEXT

Core Collections In Plants: A Way To Optimize The Genetic Resources. Citrus As A Case Of Study For Fruit Trees

Germplasm banks (ex situ conservation in case of recalcitrant seeds) play an essential role to protect and maintain the genetic […]

Electrified Lab-On-A-Disc: A Novel Approach To Lab-On-A-Chip Systems

Since the early 1980s, researchers have been working to develop “Lab-on-a-Chip” systems. These miniaturized platforms integrate the tasks typically implemented […]

Nickel-Graphene Nanocomposite As Irradiation-Tolerant Material For Gen-IV Reactors: A New Vision

In the past few decades, the contradiction between global climate change and the need to provide sufficient electricity for a […]

Duck-Billed Dinosaurs Uncovered In Aniakchak, Alaska

“…It was the abomination of desolation, it was the prelude to hell,” is how the Jesuit priest, Father Bernard Hubbard, […]

Using GIS To Determine Potentially Habitable Areas On Mars

Suppose you colonized Mars. How would you do it? What would you do? … But we considered factors to determine […]

‘Supercolony’ Of 1.5 Million Penguins Discovered In Antarctica Thanks To NASA’s Satellites

Every so often, scientists make surprising discoveries that most people did not expect. One of the most exciting recent discovery […]

Dodo Bird Meets Goldilocks: Psychotherapy And The Placebo Effect

In Alice in Wonderland (Chapter III, “A Caucus-Race and a Long Tale”), Alice viewed a race among all animals initiated […]

Science Trends is a popular source of science news and education around the world. We cover everything from solar power cell technology to climate change to cancer research. We help hundreds of thousands of people every month learn about the world we live in and the latest scientific breakthroughs. Want to know more?