Volcanic gases

Eruptions

Category archives for Volcanic gases

The fissure vent eruption near Eyjafjallajokull in Iceland. Image by Þorsteinn Gunnarsson, March 22, 2010. It has been hard to keep up with the flood of news from the Eyjafjallajokull eruption in Iceland. Eruptions readers have done a good job with getting new images, videos and info up as they happen, so you might want…

Volcano Profile: Erta Ale

The latest in my Volcano Profiles series, this one on Erta Ale in Ethiopia. The summit crater at Erta Ale in 1994 Location: The Afar region of Ethiopia. Height: 613 m / 2,011 feet Tectonic setting: Erta Ale (meaning “smoking mountain”) is part of the East African Rift, where the African Continent is tearing apart…

Catching up with some news: Anatahan erupting in the northern Mariana Islands in 2003. I ran across this article right before I got sick, but its been popping up around the interwebs (and is pretty interesting). It details a study in Molecular Ecology that suggests that populations of caribou in Canada’s Yukon Territory were strongly…

A couple bits of news: The ash plume from the February 11, 2010 eruption of Soufriere Hills taken by theAqua MODIS camera. Image courtesy of the NASA Earth Observatory. Flights have been disrupted in the West Indies since last week with the large dome-collapse eruptions of Soufriere Hills on Montserrat. The 10 km / ~35,000…

We’ve been discussing calderas recently on Eruptions (I wonder why) and the Laacher See in Germany came up. I’ve actually been to the Laacher See on a field trip lead by one of the world’s experts on the caldera, Dr. Gerhard Worner. So, I thought I’d post some pictures and talk a little about this…

With all the talk of the current Yellowstone earthquake swarm, I thought it would worth it to write a post on the the structure and caldera – and why we get earthquake swarms that are structurally rather than magmatically-related. First off, lets think about why calderas formed. This is relatively simple – at least superficially.…

First off, I wanted to thank all of the Eruptions readers for making January the most popular month ever on this blog. I suppose I should give an assist to Yellowstone, but really, thanks for coming to the blog, reading the posts and engaging in all the great discussions that go on within its (cyber)walls.…

Some news for the last Friday in January: Volcanic lightning captured over Redoubt in March 2009. Tungurahua in Ecuador continues to erupt. Yesterday, the volcano spread ash over much of central Ecuador. Apparently people in Ecuador aren’t taking the hazard of ash too seriously, with many ignoring recommendations to wear masks when the ash is…

Two quick notes: A Costa Rican farmer evacuating in early January 2010 after renewed activity of Volcan Turrialba. Well, it appears that after a quiet night on Friday, the current Yellowstone swarm picked up where it left off. We’re now up to 1,200 earthquakes since January 17th, with a pair over M3 today. Of course,…

This week’s USGS/Smithsonian GVP Volcano Update! Highlights include: A volcano I had never heard of in the Kuril islands is showing signs of life: Kharimkotan. Satellite images show a thermal anomaly at the summit of the volcano – its last known eruption was in 1933. Ash, sulfur dioxide and steam continue to erupt from Nyamuragira…