Magma Accumulation Still Progressing Steadily Skip to content

Magma Accumulation Still Progressing Steadily

By Andie Sophia Fontaine

Art Bicnick. The 2024 Sundhnúksgígaröð eruption
Photo: Art Bicnick. The Sundhnúksgígaröð eruption in March 2024.

There are no signs that the magma accumulation under Svartsengi is decreasing. While seismic activity has been low, land uplift still continues, a new report from the Icelandic Met Office states.

A “closed” system

While the previous eruption ended on June 22, magma is still flowing into the chamber beneath Svartsengi in what is known as a “closed” system. This is when magma from the depths of the earth rises up into a magma chamber when no eruption is occurring.

In this instance, the magma chamber is estimated to be between four and five kilometres below the surface.

Cubic metres per second

The magma inflow rate into the chamber is by all accounts not showing any sign of slowing down, but rather progressing steadily.

“Data shows inflow rates between 8 and 10 m3/s until the first eruption in December 2023,” the report states in part. “Following this, the model indicates that the magma inflow rate at depth has typically been in the region of 4 to 6 m3/s, when accounting for the uncertainties in the results. Considering the uncertainty in the model, the inflow rates since mid-January have been relatively stable.”

As reported, a new eruption is still considered likely in the coming weeks or months.

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