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M 8.5 quake S of Japan coming in now

  1. May 30, 2015 #1

    davenn

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    Prelim report

    8.5 166km WNW of Chichi-shima, Japan 2015-05-30, 11:23:00 UTC, 696.0 km Deep

    http://www.sydneystormcity.com/seismograms.htm

    At almost 700km, this extremely deep and will result in a significant lack of surface waves

    M8.5 S of Japan.JPG


    Dave
     
  2. jcsd
  3. May 30, 2015 #2

    Borg

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    That's good. Japan doesn't need another tsunami.
     
  4. May 30, 2015 #3

    davenn

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    yup., so true.
    its now been downgraded to a M 7.8 .... mag is likely to vary a bit till all the data is analysed
     
  5. May 30, 2015 #4

    Astronuc

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    M7.8 - 189km WNW of Chichi-shima, Japan
    http://earthquake.usgs.gov/earthquakes/eventpage/us20002ki3#general_summary
    2015-05-30 11:23:02 (UTC)
    Lat/Long = 27.831°N 140.493°E
    depth = 677.6 km (421.0 mi)
    Nearby Cities
    1. 189km (117mi) WNW of Chichi-shima, Japan
    2. 771km (479mi) SSE of Shimoda, Japan
    3. 781km (485mi) SSE of Oyama, Japan
    4. 783km (487mi) SE of Shingu, Japan
    5. 874km (543mi) S of Tokyo, Japan
    Very deep means little surface action, or rather the energy is distributed over a larger area of the surface, so a significant tsunami would not be likely.

    http://earthquake.usgs.gov/earthquakes/eventpage/us20002ki3#scientific_origin:us_us20002ki3


    Powerful quake strikes off Japan; no tsunami warning
    http://news.yahoo.com/powerful-quake-strikes-off-japan-no-tsunami-warning-115852201.html [Broken]
     
    Last edited by a moderator: May 7, 2017
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