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15 December 2017
Subterranean Serendipity: Scientists stumble upon a new way to sample magma
Scientists have never directly observed magma beneath the Earth’s surface. But thanks to the discovery of easily accessible magma chambers, it may now be possible, report scientists at the 2017 American Geophysical Union Fall Meeting in New Orleans.
11 August 2017
“Heartbeats” of an underwater volcano’s eruption imaged by ultrasounds (plus VIDEO)
Using acoustic footage of a volcanic eruption and images taken by a remotely operated vehicle (ROV), scientists have documented an underwater volcano’s eruption off the coast of El Hierro, the smallest of the Canary Islands.
1 August 2017
Threat to the ozone layer by future volcanic eruptions greater than previously thought
As the CFCs slowly degrade over the coming decades, so too should the volcano’s ozone-destroying power. However, new research shows that the volcanic risk to the ozone layer will persist for decades longer than previously believed.
25 July 2017
Researchers uncover 200-year-old sunspot drawings in Maine
In April of 1815, the volcanic eruption of Mount Tambora in Indonesia caused a global decrease in temperatures for the following few years, and 1816 came to be known as the “year without a summer.” New England states were particularly hard hit by these temperature changes, which significantly affected agriculture production and quality of life. Alongside his journal entries, Reverend Jonathan Fisher of Blue Hill, Maine sketched the sunspots during the summer of 1816, thinking they might be responsible for the cold summer temperatures.
27 April 2017
Glass formed by volcanic lightning could be used to study eruptions
Researchers have developed a method to measure one of the most striking and difficult to measure volcanic features – volcanic lightning – using the tiny glass spheres formed by hot volcanic ash.
14 March 2017
Volcanic eruption expanded ozone hole to record size
On April 22, 2015, the Chilean volcano Calbuco erupted, spewing volcanic ash 10 kilometers (six miles) skyward. But Calbuco didn’t just tear a hole in the Earth that day. A new study suggests it also tore a hole in the sky.
13 March 2017
A perfect storm of fire and ice may have led to snowball Earth
Harvard University researchers have a new hypothesis about what caused the runaway glaciation that covered the Earth pole-to-pole in ice.
16 November 2016
Global warming could reduce volcanic cooling effects on climate
New research finds that as the climate warms, Earth’s atmosphere could trap more volcanic and plumes in the troposphere, the lower part of the atmosphere where weather happens. Volcanic aerosols that stay in the troposphere get washed out by precipitation in days or weeks.
12 July 2016
Dormant volcano near Rome is waking up
A long-dormant volcano outside Italy’s capital is entering a new eruptive cycle, a recently published study finds. Scientists previously assumed Colli Albani, a 15-kilometer (9-mile) semicircle of hills outside Rome, was an extinct volcano. But in recent years, scientists have observed new steam vents, earthquakes and a rise in ground level in the hills and surrounding area.
14 April 2016
AGU journal cover features work of Icelandic mouth painter
The AGU journal Geophysical Research Letters recently featured the work of mouth painter Brandur Bjarnason Karlsson on its cover. The image depicts the eruption at the Holuhraun lava field in Iceland, where magma originating from the Bárðarbunga volcano spewed out of eruptive fissures from August 2014 to February 2015. The spectacular eruption is the subject of a new study in GRL co-authored by Brandur’s mother, Bryndis Brandsdottir, a senior researcher at the Institute of Earth Science at the University of Iceland.
GeoSpace is a blog on Earth and space science, managed by AGU’s Public Information staff. The blog features posts by AGU writers and guest contributors on all sorts of relevant science topics, but with a focus on new research and geo and space sciences-related stories that are currently in the news.