Eruptions

Archives for January, 2010

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…

There has been a … ahem … healthy discussion of Yellowstone’s current earthquake swarm on Eruptions as of late. We’ve now reached ~1,500 measurable earthquakes over the last 11 days. The latest reports of the continuation of the swarm isn’t going to make anyone happy, but still, there are no signs that (a) this is…

Bezymianny in Kamchatka, one of the many volcanoes in eastern Russia that will no longer be monitored by KVERT. In some bad news for volcano watchers (and the general public, too), Russia has decided to stop funding KVERT (the Russian equivalent of the Alaska Volcano Observatory), the institute that monitors and researches volcanic eruptions on…

Old Faithful geyser at Yellowstone National Park. A few thoughts about faulting, earthquakes and eruptions: The earthquakes at Yellowstone have been universally attributed to fault movement rather than magmatic activity by the USGS and the researchers at the University of Utah. This is likely based on the moment solutions for the earthquakes (i.e., the sense…

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,…

Outcrops of Obsidian Butte, California, near the Salton Sea. A brief update on the two earthquake swarms making news right now: Yellowstone The earthquake swarm at Yellowstone is still rumbling along, reaching over 1,000 earthquakes measured over the last week. However, the swarm has begun to die down overnight – with no earthquakes between 10:41…

Spotlight on two Japanese volcanoes

Sakurajima in Japan, erupting in December 2009. Image courtesy of Photovolcanica.com Richard Roscoe at Photovolcanica.com has just posted two great sites focusing on two of the most active volcanoes in Japan: Sakurajima and Suwanosejima. These volcanoes are almost constantly erupting with small strombolian events punctuated by occasional plinian eruptions. Sakurajima is on the island of…

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…

Quick news updates for a Wednesday… The island (and volcano) of Gran Canaria in the Atlantic Ocean. It last erupted in ~20 B.C. The earthquakes keep coming at Yellowstone – up to a M3.5 in the last 24 hours. Time has already put up an article wondering about whether people need worry about the swarm…

A hot spring in Yellowstone National Park. Image courtesy of the USGS. Yesterday I left a little teaser about the current earthquake swarm going on at the Yellowstone Caldera. Eruptions readers have come through with even more information on the swarm. Over 250 earthquakes have occurred in the park over the last few days, most…