Eruptions

Archives for January, 2009

The mysteries of Antarctic volcanism

We really don’t know much about the current and ancient volcanism on Antarctica, but researchers from British Antarctic Survey claim they have found evidence of subglacial eruptions in western Antarctica, mostly in the form of ash and volcanic debris intercalated with the ice. It would not be surprising if there was active volcanism underneath the…

Ruapehu video help

I wouldn’t normally use this blog for something like this, but google has failed me. When I was in New Zealand, I saw a video on the 1995-96 eruptions at Ruapehu titled Witness to Eruption made in, I believe, 1999. It had some excellent footage of the eruptions in the 1990s as well as the…

New evacuations near Huila

Nevado del Huila continues to cause problems in Colombia. Over 4,000 people had to be evacuated today from the Belalcazar area after the volcano showed new signs of eruption. No description is given to exactly what those signs were/are, however after the lahars in November (2008), it sounds like the Colombian government is not taking…

One of the more impressive areas I visited while in New Zealand was the Waimangu Valley near Mt. Tarawera (above). The valley itself was created by blast explosions (phreatic explosions) during the 1886 eruption of Mt. Tarawera. These eruptions cut right down the axis of the rhyolite domes (most of which erupted ~1305 A.D.) and…

Back from New Zealand

I made it back from New Zealand yesterday after spending the last two weeks looking at some of the most remarkable volcanic landscapes you could imagine. I’ll add more detail soon for those of you interested in the volcanism of the North Island, but I’ll leave you with a picture of yours truly in from…

I just wanted to point folks to an interview in US News & World Report with the USGS scientist-in-charge of the Yellowstone Volcano Observatory, Dr. Jacob Lowenstern. He plays down the swarm, noting that things like this happened in the 1980s and that Yellowstone has seen over 80 eruptions in the caldera since the last…

Two weeks in New Zealand

Right as Yellowstone is getting interesting (or at least had signs of interest), Eruptions is going on a bit of a break again starting January 2. This time it is because I’m off to the North Island of New Zealand to do some field work. I’ll be headed to Tarawera (hopefully both the 1305 and 1886…