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Mag. 8 Earthquake - Mexico 08/09/2017

  1. Sep 8, 2017 #1
  2. jcsd
  3. Sep 8, 2017 #2

    davenn

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    ya just beat me to it

    was about to post

    M 8.0 - 96km SW of Pijijiapan, Mexico

    Time: 2017-09-08 04:49:17 (UTC)
    Location: 15.029°N 93.807°W
    Depth: 35.0 km

    upload_2017-9-8_15-38-58.png


    tis still coming in on my seismo ......

    http://www.sydneystormcity.com/seismograms.htm
     
  4. Sep 8, 2017 #3
    Upgraded to 8.2 now. Also, there was something about a 6.1mag earthquake in the northern pacific island?
     
  5. Sep 8, 2017 #4

    davenn

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    where did you get the 8.2 from ?

    USGS are saying 8.1

    M 8.1 - 87km SW of Pijijiapan, Mexico


    I'm surprised that it is even a M8 considering how small the amplitude on my seismograph is



    Dave
     
  6. Sep 8, 2017 #5
  7. Sep 8, 2017 #6

    davenn

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  8. Sep 8, 2017 #7

    Borg

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    Yahoo is determined to be the most inaccurate. One of their RSS feeds was saying that it was 8.4.
     
  9. Sep 8, 2017 #8

    davenn

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    4 hours later and there is still low level signal coming in on my seismo
     
  10. Sep 8, 2017 #9
  11. Sep 8, 2017 #10

    fresh_42

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    To me it looks like an ordinary lightning storm in summer. More interesting is the tsunami warning. Could it really travel thus far?
     
  12. Sep 8, 2017 #11
    In fact I've just seen this: "Tidal gauges are providing evidence of the first waves arriving at Chatham Islands and East Cape, consistent with GNS Science predictions."
    But they are small waves, and no evacuation orders have been given.
     
  13. Sep 8, 2017 #12

    fresh_42

    Staff: Mentor

    Although there are no major barriers on the surface between Mexico and NZ, I would think that the Marianne trench would play a major role for deep sea waves, i.e. I'd expected them to dive there and get scattered. But I've never had a course on fluid dynamics, so this might be wrong. Could be an interesting thread.
     
  14. Sep 10, 2017 #13

    davenn

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    if you look closely, you will see the flashes are originating on the ground and then lighting up the clouds above

    Simple and easy explanation .... arcing of electrical systems and explosions of transformers etc in substations
    as the power lines are swinging all over place and contacting each other


    tsunamis regularly cross the Pacific Ocean with ease :smile:


    I assume you mean the Mariana Trench

    It wont affect how the tsunami arrives in NZ


    Dave
     
  15. Sep 10, 2017 #14

    davenn

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    raw and processed seismograms from my recorder

    170908  UT M8.0 offshr Mexico zhi.GIF

    170908.045502.zhi.gif.gif


    Dave
     
  16. Sep 10, 2017 #15

    davenn

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    A classic example of a unilateral rupture ( rupture on the fault starts in one place and goes in one direction only)

    upload_2017-9-11_13-39-45.png


    also been noting in the media that they are all saying that this is the largest Mexican quake in 100 years
    They all seem to be forgetting about the M8.0/8.1 in 1985 that devastated Mexico City that killed more than 5000 people
    and did horrific damage

    many references on the www
    https://www.bing.com/search?q=1985+...&src=IE-SearchBox&FORM=IENTTR&conversationid=


    Dave
     
    Last edited: Sep 11, 2017
  17. Sep 12, 2017 #16
    Great information, everyone.
     
  18. Sep 13, 2017 at 9:41 PM #17

    1oldman2

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