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Rumbling Yellowstone

  1. Jan 10, 2009 #1
    Yellowstone in the news again,

    Not a lot certainty about what's going to happen. Although one thing seems certain, the scary scenarios will accumulate, don't you think?
     
  2. jcsd
  3. Jan 10, 2009 #2

    Xnn

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    Source: http://pubs.usgs.gov/of/2007/1071/of2007-1071.pdf
     
    Last edited by a moderator: Jan 10, 2009
  4. Jan 10, 2009 #3

    Astronuc

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    Staff: Mentor

    I imagine there will be a lot of hype motivated by the desire to sell more advertising. Call me cynical, but I don't see much in the way of critical analysis in the media.

    Anything earth movement around mag 2-3 is not big deal - California and Alaksa have that daily. The more appropriate measure would be temperature rises, which would indicate magma moving toward the surface.

    I was in Yellowstone several years ago and I observed that many of the thermal vents and features were no longer as hot or active. Part of that is a shift in the magma, and part may be drier weather so that ground water is reduced in some areas.
     
  5. Jan 10, 2009 #4

    D H

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  6. Jan 10, 2009 #5

    Evo

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    I read this article earlier.

    http://news.yahoo.com/s/ap/20090110/ap_on_sc/yellowstone_volcano_hysteria
     
  7. Jan 10, 2009 #6

    Astronuc

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    For perspective, see this map.
    http://earthquake.usgs.gov/eqcenter/recenteqsww/Maps/region/N_America.php

    Note the greater frequency of earthquakes of Mag 2.5 or greater in Alaska, California and Puerto Rico, compared with Yellowstone. In Yellowstone, there is one earthquake of Mag 3.3, which is unusual.

    Also see recent earthquakes in the US - http://earthquake.usgs.gov/eqcenter/recenteqsus/
    Alaska, California and Puerto Rico have daily activity well above Yellowstone

    Zoom into - http://earthquake.usgs.gov/eqcenter/recenteqsus/Maps/US10/37.47.-115.-105.php - and note the number of earthquakes in Utah vs Wyoming (Yellowstone).


    Certainly, one should keep an eye on Yellowstone, but don't panic.
     
  8. Jan 10, 2009 #7
    Is it better to have many small rumblings, I thought I remembered something along those lines anyways...?
     
  9. Jan 10, 2009 #8

    turbo

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    It's better to have regular small quakes on a major fault than to have a long period of quiet, when stresses can build. I would not want to be near the New Madrid fault when that rascal decides to cut loose again.
     
  10. Jan 10, 2009 #9

    Evo

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    I was watching a show about volcanic action in Hawaii last night, and earthquakes always precede eruptions there, but that is a unique area with a fixed hot spot that the plates move over. Or so they said.
     
  11. Jan 10, 2009 #10
  12. Jan 14, 2009 #11
  13. Jan 14, 2009 #12
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