Quake activity at Mt Rainer

Discussion in 'Earth Science' started by cardiovascular_tech, Nov 12, 2004.

  1. cardiovascular_tech behind you with a knife Registered Senior Member

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    there sure has been alot of activity with earthquakes and volcanos lately, just this week Mt Rainer had a 3 mag quake right under the valcano about 1 mile below in a series of 17 - 18 quakes, it has calmed down but could start up again and is being monitored.
     
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  3. cardiovascular_tech behind you with a knife Registered Senior Member

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  5. cardiovascular_tech behind you with a knife Registered Senior Member

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    ya I wouldn't be suprised with all the activity going look at all the quakes hitting asia right now, japan is really getting slammed by them too, could this have anything to do with your theroy Dwayne or is it just normal plate movement
     
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  7. Facial Valued Senior Member

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    Quake activity seems to appear in punctuated equilibrium-like frequencies, to borrow bio terms.
     
  8. Norman Atta Boy Registered Senior Member

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    Use your spell check a little more......O.K.?

    Atta Boy

    Please Register or Log in to view the hidden image!

     
  9. spidergoat Liddle' Dick Tater Valued Senior Member

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    The magnetic field has flipped hundreds of times before, and there is no evidence of land and atmospheric collapse. Anyway, it happens very slowly in relation to human time, going through transition stages that might last hundreds of years.
     
  10. cardiovascular_tech behind you with a knife Registered Senior Member

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    There was another quake today in Indonesia it was measured at 7.3 mag
     
  11. Facial Valued Senior Member

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    The Pacific is really firing up.
     
  12. Hideki Matsumoto ñ{ìñÇÃóùâ?ÇÕêSÇÃíÜÇ©ÇÁóàÇ ÈÅB Registered Senior Member

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    I think we might be heading for a Cascadia slip event? what do you think?
     
  13. Facial Valued Senior Member

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    Cascadia slip event? What's that?
     
  14. Hideki Matsumoto ñ{ìñÇÃóùâ?ÇÕêSÇÃíÜÇ©ÇÁóàÇ ÈÅB Registered Senior Member

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    The biggest earthquake in recent history = Cascadia slip event. The last event occured in 1700 off the south coast of Vancouver Island. The earthquake was in the neighbourhood of a Magnitude 10-11. The shockwave slammed a 150ft tall tidal wave into Hawaii, Taiwan, Japan and Alaska killing millions of people.
     
  15. cardiovascular_tech behind you with a knife Registered Senior Member

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    never heard of a cascadia slip event before, but there is more and more activity every where, just like new zealand just had a slow earth quake over a days period and then stopped and a few days later produced one with a mag 7 - 8 just off the south shore. there was another one in japan also.
     
  16. Watcher Just another old creaker Registered Senior Member

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    Nice Science article on the Cascadia slip area, which I had not heard of before either. Unfortunately the links in the article require subscription. Worth a look though, it explains Cascadia very well.

    http://szseminar.asu.edu/readings/Science_Thatcher_2001.htm

    **********************
    Here is another article specifically describing the January 1700 earthquake, which they claim was a 9.0. (Hideki-san, they report the tsunami in Japan at only 5 meters?)

    http://www.pgc.nrcan.gc.ca/press/index_e.php

    "This paper confirms that the January 1700 earthquake was large enough to have ruptured the entire length of the plate boundary of the Pacific Coast (from northern Vancouver Island to northern California)..."
    **********************
     
    Last edited: Nov 28, 2004
  17. cardiovascular_tech behind you with a knife Registered Senior Member

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  18. Hideki Matsumoto ñ{ìñÇÃóùâ?ÇÕêSÇÃíÜÇ©ÇÁóàÇ ÈÅB Registered Senior Member

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    There was talk that the wave as actually as high as 22m in Samoa. Yes Japan didn't get that big a wave though at only 5m- 7m.

    The magnitude was in the 10-11 range sorry. I disagree
     
  19. Facial Valued Senior Member

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    Wow. Where was the tidal wave when it was 150ft? If it was Taiwan, then I'd be quite impressed!
     
  20. Watcher Just another old creaker Registered Senior Member

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    Hmmm... OK, but I am not sure what your source is for that. The Canadian Geologic Survey seems to think it was a 9, along with all these others. Haven't found anything yet suggesting a 10.

    ***************

    "The M=9 Megathrust Earthquake of January 26, 1700"
    http://www.pgc.nrcan.gc.ca/seismo/hist/1700.htm

    "This was one of the world's great earthquakes with a magnitude estimated at 9."

    ***************

    http://dsc.discovery.com/news/briefs/20031201/quake.html

    "Dec. 4, 2003 — The Pacific Northwest is facing the possibility of a devastating magnitude 9 earthquake, said geophysicists studying earthquake-caused tsunamis that struck Japan in 1700."

    ***************

    Cool computer-generated image of the tsunami here.

    http://www-sci.pac.dfo-mpo.gc.ca/osap/projects/tsunami/tsunamieventsbc_e.htm

    "The last known great earthquake in the northwest was in January, 1700, just over 300 years ago. The computer-generated image (courtesy of Kenji Satake) shows the tsunami produced by the great (magnitude 9) Cascadia earthquake of January 26, 1700, six hours after initiation."
     

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