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Mag. 7 Indonesia Earthquake - 5th August 2018

  1. Aug 5, 2018 #1
    https://www.stuff.co.nz/world/asia/...and-indonesian-officials-say-tsunami-possible
     
  2. jcsd
  3. Aug 5, 2018 #2
  4. Aug 5, 2018 #3

    davenn

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    That's first M7 event since Feb 2018

    The USGS have down graded it to 6.9

    The count for M7.0 - 7.9 events this year is well down on the long term averages.
    By now there should have been around 10 - 12 in that range there have been only 5 and they were all back in Jan and Feb.
    18 / year is the long term avg.

    M6.0 - 6.9 events are also well down compared to the averages. So far 49 for the year.
    The annual avg is around 130

    So far there hasn't been the M8+ event for the year either


    from my seismograph
    http://www.sydneystormcity.com/seismograms.htm

    zhi.gif

    cheers
    Dave
     
    Last edited: Aug 6, 2018
  5. Aug 6, 2018 #4
    I just got back last week from Bali. I've been messaging a lot of friends I made over there.
     
  6. Aug 6, 2018 #5
    Everyone alright?
     
  7. Aug 9, 2018 #6

    davenn

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    The aftershocks continue on Lombok Island.
    As I am typing this the latest respectable ( and largest, so far) aftershock is tailing off.

    M 5.9, 3km SE of Todo, Indonesia
    2018-08-09 05:25:31 (UTC), 10.0 km deep

    The red dot on the map


    This is about 40km WSW of the M6.9 main shock

    I have taken the USGS base map and added the event magnitudes to it....

    upload_2018-8-9_16-14-46.png

    apologies for the low quality image
    the forum does a lot of compression

    cheers
    Dave
     
  8. Aug 9, 2018 #7
  9. Aug 9, 2018 #8

    davenn

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  10. Aug 9, 2018 #9
    Stuff must have updated the article to 5.9.
     
  11. Aug 10, 2018 #10

    davenn

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    Seismogram for the M 5.9 aftershock

    180809 UT M 5.9 ashk Lombok eastern Indonesia zhi2.gif
     
  12. Aug 19, 2018 #11
    And again:
    https://www.independent.co.uk/news/...-lombok-island-second-magnitude-a8498406.html
     
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