Eruptions

Archives for July, 2008

There were a number of small explosive events at Soufriere Hills in Montserrat in the past few days. Small ash columns of ~5,000 feet were produced, likely caused by some degassing or interaction with water of the andesite dome at the top of the volcano. The director of the Montserrat Volcano Observatory says there is…

Just when you thought it was exciting enough in the Aleutians, word comes in that Cleveland Volcano is erupting as well. Cleveland is a very noisy volcano on Chuginadak Island, having last erupted in February (although it hasn’t been updated on the GVP page). Aircraft have been warned about both eruptions in the Alaskan island chain.…

The latest eruption at Llaima is beginning to slow down according to Chilean state geologist, Hugo Moreno. The volcano has been erupting for most of the month, forcing limited evacuations. The eruption has (so far) produced lava flows, ash falls and some bombs thrown from the crater. However, the SERNAGEOMIN is keeping the “red alert”…

Ruapehu settles down

I suppose this is more “unnews” than “news”, but workers at Ruapehu in New Zealand report that seismicity has decreased, gas emissions have returned to background and the crater lake has cooled, indicating that the current eruptive cycle which started in September 2007 might be winding down. There was some concern earlier in the summer…

Mt. Saint Helens trivia

It is always fun to try to comprehend the sorts of numbers that geological processes produce. I mean, how much is 125 million cubic yard exactly? Well, the Cascades Volcano Observatory puts it this way: “From October 2004 to late January 2008, about 125 million cubic yards of lava had erupted onto the crater floor…

It has been a while since we’ve seen a Chaiten update, but today there is a report that LanChile has had to cancel flights to Puerto Montt due to ash from the volcano. Chaiten has been erupting since early May, so now we’re almost 2 1/2 months into the eruption – quite a feat for…

Okmok Eruption 2008

I’m back from my conference and will hopefully be getting back to a regular schedule!  In the meantime, the biggest news is still the eruption of Okmok Caldera in Alaska. The latest news has the eruption still going strong and the USGS predicting it will continues for potentially weeks to months. The eruption is apparently…

Not really a “new eruption” as such, but the Geophysics Institute of Ecuador is reporting that Tungurahua, one of the most active volcanoes in South America, has been erupting ash and bombs as of late, along with showing signs of increased seismicity. Nothing new for this tongue-twister of a volcano as it has been erupting…

Photo of the 2008 Okmok eruption

Here’s a stunning shot of the current eruption at Okmok Caldera in Alaska (brought to us by National Geographic). Personally, I think the best part is the fact that this was shot by an Alaska Airlines pilot! Talk about “to the right of the plane…” fodder.

More on Okmok

Sorry about the brevity of this update, but I’m exhausted. From the Alaska Volcano Observatory (AVO): At this time, based on AVO analysis of satellite data, ash is continuing to erupt from a composite cinder and spatter cone called Cone D in the eastern portion of the 6-mile wide caldera or crater of Okmok. It…