Earthquake Seismic Wave Illustration:

Discussion in 'Earth Science' started by paddoboy, Jul 7, 2019.

  1. paddoboy Valued Senior Member

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    https://www.sciencealert.com/epic-videos-show-the-july-4-earthquake-rippling-across-north-america

    Videos Show The July 4 Earthquake Rippling Across North America
    Before fireworks streaked across the skies of southern California on July 4, nature unleashed its own thunderous blast of energy: an earthquake.

    The magnitude 6.4 temblor struck near Ridgecrest around 10:34 a.m. PT, cracking roads, bursting water mains, and toppling electrical power lines with its might.

    A larger, 7.1 magnitude has since struck Southern California. Before that, the 6.4 quake was the most powerful to rattle the state in 20 years, and its shaking ended a five-year "drought" of earthquakes for California. Luckily, no deaths or major injuries have yet been reported.

    As with all earthquakes, the Ridgecrest event was felt far beyond the borders of California – though not by people. Rather, incredibly sensitive devices called seismometers picked up the quake's rumbles from thousands of miles away.

    Seismometers record the various ground motions of earthquakes, and a single station's data isn't all that interesting. Yet when many of the devices are sprinkled across a continent, they can be used to reconstruct a seismological event as it spreads, dissipates, and even bounces off underground structures.

    As shown by a network of hundreds of seismometers called USArray, which is funded by the National Science Foundation, that seismic-wave data can look incredible.

    "The ground motions can be captured and displayed as a movie, providing a visual demonstration of these often indiscernible movements," IRIS, a research group that studies seismological events and logs USArray data, says on its website. "The visualisations illustrate how seismic waves travel away from an earthquake."

    more at link........

    https://twitter.com/i/status/1146950304262475776
     
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  3. DaveC426913 Valued Senior Member

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    Sunuvagun, so it registered here in Ontario. At least on instruments...
     
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  5. paddoboy Valued Senior Member

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    They are calling this the "Ridgecrest event" Ridgecrest I assume is on or near the San Andreas fault line?
     
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  7. DaveC426913 Valued Senior Member

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    Ridgecrest was the epicentre of the quake, but the quake was not on the San Andreas Fault, which is 100 miles away.

    Please Register or Log in to view the hidden image!

     
    Last edited: Jul 8, 2019
  8. paddoboy Valued Senior Member

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    Vinaka vakalevu Dave!
     
  9. DaveC426913 Valued Senior Member

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    Who told you the secret words that would trigger my transformatiooooarrrrRARRRRRRGGHGDEATHTOALLWHOOPPOSEUS
     
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  10. paddoboy Valued Senior Member

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    Thank you very much in Fijian.
     
  11. DaveC426913 Valued Senior Member

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    YES.
    Yes.
    That's definitely what it is.

    And I typed that with my finger things.
    My normal, human finger things.
    Like everybody has.
     
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