Jury duty is done, so here is a little update.
Redoubt is puffing away, producing a more prominent steam plume than it has over the last week (but that may be more weather-related than magma-related.) Beyond that, the volcanic gases keep coming and the earthquakes keep coming.
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Date: February 07, 2009 Image Creator: Bleick, Heather Image courtesy of AVO/USGS.
So much for my oh-so-eloquent eulogy for early 2009 activity at Redoubt.
AVO reports that it appears that the volcano has potentially erupted - or at least released a lot of steam and (possibly) ash.
Seismic…
Redoubt with a prominent steam plume on April 7,2009. Image courtesy of Robert Cole/AVO
Eruptions reader Brian just pointed out that AVO has posted a new webcam (well, a redirectly webcam) for the volcano and I thought it deserved its own post. This new angle gets you right up to the new dome…
Image courtesy of AVO/USGS by Cindy Koplin showing the ash fall in Homer, AK on 4/4/09
Not much new to report about the eruption at Redoubt beyond the fact that it continues. AVO has kept the warning level at Red/Warning after briefly dropping it to Orange/Watch on Friday night. The 15,000 foot /…
The eruptive plume from Eyjafjallajökull taken Holsvelli webcam. Image courtesy of Mattias Larsson.
Sorry to disappoint everyone visiting to blog while they sit at any number of airports around the world, but the eruption at Eyjafjallajökull appears to still be going strong. The Icelandic Met…
C'mon Mt Redoubt ...... it'd be really good to have a new case study for teaching!!
OK 1 question ... volcanoes male or female ??
lol Looks to me that it might be female ...she'll blow when she feels like it when nobody expected it
While it appears quite certain that magma is rising toward the surface within Redoubt, I wouldn't be all that surprised if this time it just started building a lava dome, without much explosive activity. Volcanoes do that sometimes. Remember Mount St. Helens in 2004, when there were just a few small hydrothermal (steam) explosions before a nearly purely effusive, dome-building activity started? Or Kelud in Indonesia in 2007, a volcano that in the past had always erupted violently explosively, but this time it quietly extruded viscous lava to build a big dome? Also Nevado de Huila in Colombia is not producing very much explosive activity (the deadly November eruption may have been largely due to interaction of hot dome lava with glacier ice) but rather building a dome.
Time will tell ...
Gerhardus,
that comment could be taken in such a wrong way lol. personally Volcanoes are like sleeping old men, poke them with a stick and they grumble and mutter, and occasionally they wake up and give you a full on shouting at.
Boris
Point taken (pardon to the ladies) your explanation sounds real fair. Just wondering how much is a major eruption going to influence the current somewhat hectic weather patterns in the northern half
What will the influence be if it's a minor one and what if it's a major eruption
How much 'polutants' normally being released in a eruption if it's compared to the human emissions eg. one eruption like st Helens compared to human daily emissions
Gerhardus, I wonder the same thing. I remember that in August, 1992, my area had snow around the middle of August. It stayed cold from that point right through winter. I have never seen this before or since. Experts later said it was caused by Pinataubo.
From what I have read, emissions from Alaskan volcanoes have great potential to disrupt human activity because the ash and emissions can travel further at that latitude.
As for H2S and other emissions, that is a good question. The 1912 eruption of Novarupta, AK, dissolved laundry on clotheslines in Vancouver, Canada, three days after the eruption. For 40 years, it was believed that Katmai was the source. Novarupta had apparently sucked out the magma chamber from Katmai, causing it to collapse. A Novarupta-style eruption today would disrupt air traffic all over North America, not to mention causing health problems. There's always that ominous line in history books: "This could happen again." I don't think anyone believes Redoubt is another Novarupta. Pinataubo was smaller than Novarupta.
Someone told me that the metallic content of the volcano is a factor in climate change. Each volcano has its own metallurgical signature. Dr. Klemetti?