Volcanic gases

Eruptions

Category archives for Volcanic gases

A new Weekly Volcanic Activity Report from the Smithsonian and USGS Global Volcanism Program! Highlights from this week’s report include: Things are getting a little noisy in Colombia. I mentioned a few weeks ago about a possible explosion at Nevado del Ruiz. Now we have reports of increased seismicity under nearby Cerro Machín and ash…

Mt. Hood in Oregon, taken August 2008. Image by Erik Klemetti. Click on the image to see a larger version. Quick news! I’m not going to go into too much depth right now about the recent study published in Nature Geoscience on Mt. Hood in Oregon – I plan to talk about it more in…

Mt. Elbrus in southern Russia, one of the active volcanoes in the Caucasus Mountains. (Note the prominent flow levees sticking out of the snow cover on the dacite lava flow in the middle of the image.) Most people (including myself) aren’t fully aware of the active volcanoes in the Caucasus Mountains, but sure enough, there…

Lots of little pieces of news I’ve run across … time to play a little catch up. Stromboli: A volcano after Don Ho’s heart. Every once in a while, my RSS feeds will dredge up some articles from years gone by … and this week there were two New York Times pieces that are a…

Our tour of the Marianas begins SW of Guam. In this area the volcanoes are submerged and make up a region known as the Southern Seamount Province. Our first stop is Tracey Seamount, which lies 30 km west of Guam. Tracey is a ~2 km tall cone and volume of ~45 km3 It is one…

Crater lake at Eyjafjallajökull

The crater lake at Eyjafjallajökull as seen on June 11, 2010. Image from the Icelandic Met Office by Sveinn Brynjólfsson. After keeping us transfixed for almost two months this spring, Eyjafjallajökull has slowly drifted from the headlines. However, this doesn’t mean that interesting things – volcanologically-speaking – have stopped happening at the Icelandic volcano. For…

Playing the waiting game at Taal

A partially-eroded scoria cone in the Taal volcano caldera. As I mentioned earlier this week, PHIVOLCS has raised the Alert Status at Taal in the Philippines to 2 (out of 5) after increasing tremors and gas emissions from the volcano’s crater lakes. Now, the Philippine government is taking this threat very serious, sending divers, helicopters,…

The steaming vent area at Taal in the Philippines in September 1965, when the volcano produced a VEI 4 eruption. The Philippine Institute of Volcanology and Seismology (PHIVOLCS) has raised the alert status at Taal to Level 2 (of 4) and officials in the Philippines are getting ready if the volcano does come back to…

Looking for some volcano news – you’ve found it. A shot of volcano “tourists” near the erupting Pacaya. Photo by the Associated Press. Eruptions reader Dr. Boris Behncke dropped a note that Kilauea has not one but two active lava lakes right now. The lava lakes can be seen on the webcams for the Halema`uma`u…

Brief news! Lava flows reaching the sea at Kilauea in Hawai`i. Image from November 2009, courtesy of HVO/USGS. The Alert Status at Cleveland in the Alaskan Aleutian Islands was raised to Yellow (Advisory) by the Alaska Volcano Observatory after new signs of activity emerged. The latest report from AVO on the volcano says a thermal…