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Redoubt Volcano Activity

  1. Jan 30, 2009 #1

    Astronuc

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    Alaskans brace for Redoubt Volcano eruption
    http://news.yahoo.com/s/ap/20090130/ap_on_re_us/alaska_volcano
    The Alaskan and Cascade volcanos tend to erupt with ash, and in some cases, e.g. Mt. St. Helens, explode or rupture.

    http://www.avo.alaska.edu/activity/Redoubt.php

    http://www.avo.alaska.edu/volcanoes/volcinfo.php?volcname=Redoubt

    Related thread - "Flying through volcano ash?"
    https://www.physicsforums.com/showthread.php?t=249594
     
  2. jcsd
  3. Jan 30, 2009 #2
    Which makes me recall this thread.

     
  4. Jan 30, 2009 #3

    turbo

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    That ash is very destructive because it is fine enough to get into tight places in mechanical equipment and it is sharp-edged enough and hard enough to abrade metals, glasses, etc. I still have a 35mm film-can of dust from Mt. St. Helens sent by a friend. Good friends of mine lived not far from there, and when Steve opened the sliding door to let their cat inside an all-gray cat ran in, not a black one. He was going to try to catch the stranger and throw him back outside when he noticed that everything outside was gray - covered with fine ash.

    There was a huge run on vehicle air-filters, paper dust masks, goggle, etc - just as was mentioned in the Mount Redoubt article. Masking tape and polyethylene sheeting was very popular, as well, because people wanted to reduce infiltration of that fine ash into their houses.
     
    Last edited: Jan 30, 2009
  5. Jan 30, 2009 #4
    Anyone know why this happens? And what exactly is being swelled?

    Ah, got it.
    http://books.google.com/books?id=Qd...&hl=en&sa=X&oi=book_result&resnum=2&ct=result
     
    Last edited: Jan 30, 2009
  6. Jan 31, 2009 #5

    Astronuc

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    USGS also has more information

    http://vulcan.wr.usgs.gov/Outreach/AboutVolcanoes/how_do_volcanoes_erupt.html

    Where do volcanoes occur?
    http://vulcan.wr.usgs.gov/Outreach/AboutVolcanoes/where_do_volcanoes_occur.html
     
  7. Feb 2, 2009 #6

    LowlyPion

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    Looks like activity may be intensifying as reported this morning.
    http://www.adn.com/news/alaska/story/676280.html

    I saw additional reports that the Air Force has flown some of their nearby planes down to Washington state.
     
  8. Feb 6, 2009 #7

    LowlyPion

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  9. Mar 30, 2009 #8

    LowlyPion

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    Video of the Redoubt eruption the other day.

    http://vimeo.com/3892358

    Picture from today - though it changes - from the cam looking at Redoubt.

    [​IMG]
     
    Last edited: Mar 30, 2009
  10. Mar 30, 2009 #9

    lisab

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  11. Apr 2, 2009 #10

    LowlyPion

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  12. Apr 3, 2009 #11

    wolram

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    The bottom one looks like the devil wearing a tutu, great pics.
     
  13. Apr 3, 2009 #12

    LowlyPion

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    It's easy to see how the ancients when presented with such phenomenon invented myth to try to absorb the reality of it all.

    For instance that is one tutu I wouldn't want to be looking up at.

    The portfolio of pics from Anchorage at the ADN site, from the modest ash splashes in town to the more massive plumes looming from over the horizon give a day in the life look at the reality of living even that far away from the vent holes.
     
  14. Apr 4, 2009 #13

    LowlyPion

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  15. Apr 12, 2009 #14

    LowlyPion

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    For those interested in following Redoubt, the AVO has a Twitter account, so you can sign up for more than you want to see or know about what's going on there, without having to wait for the news services to let you know which way the ash is blowing.

    Twitter:alaska_avo
     
  16. May 8, 2009 #15
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