Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Japan Earthquake 22.11.2016

  1. Nov 21, 2016 #1
  2. jcsd
  3. Nov 21, 2016 #2

    fresh_42

    Staff: Mentor

    ... half a dozen news channels in three languages and all they got is a news ticker line ...
     
  4. Nov 21, 2016 #3
    A tsunami advisory was issued for Fukushima, but the Pacific Tsunami Warning center has, at this point, not issued any alerts for the west coast of North America or Alaska
     
    Last edited by a moderator: Nov 21, 2016
  5. Nov 21, 2016 #4

    davenn

    User Avatar
    Science Advisor
    Gold Member

  6. Nov 21, 2016 #5
    With us:
     
  7. Nov 21, 2016 #6

    fresh_42

    Staff: Mentor

    correction: 12 news channels in 4 languages and out of all the Japanese channel is the only one broadcasting it ...
    Does the 20 km refer to depth or "off the coast line" - I can't read Japanese - they all report 7.3

    NHK: Tsunami (JP) underway, already observed
     
    Last edited: Nov 21, 2016
  8. Nov 21, 2016 #7

    davenn

    User Avatar
    Science Advisor
    Gold Member

    most likely
     
  9. Nov 21, 2016 #8

    fresh_42

    Staff: Mentor

    They expect 3 m. (observation 9 min ago: 60 cm on sea)
     
  10. Nov 21, 2016 #9

    davenn

    User Avatar
    Science Advisor
    Gold Member

    must be reasonably deep, very little surface waves
     
  11. Nov 21, 2016 #10

    fresh_42

    Staff: Mentor

    Meanwhile I think it's both, since on one chart they had it twice.
     
  12. Nov 21, 2016 #11

    fresh_42

    Staff: Mentor

    The best part is that one can watch it guilt-free, for the Japanese can certainly deal with 3 m.
     
  13. Nov 21, 2016 #12

    davenn

    User Avatar
    Science Advisor
    Gold Member

    a google earth on the epicentre puts it at about 33km offshr , it's going to be give or take a bit

    161121 UT M6.9 offshr Fukushima, Japan zhi.gif
     
  14. Nov 21, 2016 #13
  15. Nov 21, 2016 #14

    fresh_42

    Staff: Mentor

    Local broadcast is still at M7.3. Observed heights until now between 30 cm and 90 cm.
    ... and of course the usual say from officials like Tesco: There will be no threads to the population at any time and all is under control.
    (... although they've said something like the cooling system has stopped operating not without to mention that the water tanks are full.)
     
  16. Nov 21, 2016 #15

    davenn

    User Avatar
    Science Advisor
    Gold Member


    the media always take a long time to get things right

    see post 4 an hour ago ;)


    D
     
  17. Nov 21, 2016 #16

    fresh_42

    Staff: Mentor

    ... plus a 7+x sells better than a 6+x.
     
  18. Nov 21, 2016 #17

    davenn

    User Avatar
    Science Advisor
    Gold Member

    hahaha uh huh
     
  19. Nov 21, 2016 #18

    fresh_42

    Staff: Mentor

    By the way: they have corrected their notation now!
    M7.4!
    At least they have their cooling system running again. Max height experienced: 1.4 m.
     
    Last edited: Nov 21, 2016
  20. Nov 21, 2016 #19

    davenn

    User Avatar
    Science Advisor
    Gold Member

    interesting .. the USGS are still sitting on 6.9
    wouldn't be the first time I have seen them under rate a quake
     
  21. Nov 21, 2016 #20

    fresh_42

    Staff: Mentor

    What I don't understand about it is, that the Richter-scale is based on local (in a radius of a few 100 km) measurements (at least what's written on Wiki), so shouldn't the Japanese measurements be more accurate? The more they certainly have enough experiences. I would expect an eventual difference of about ##\pm 0.15## due to uncertainties of measurements. On the other hand the recent NZ quake which has been more difficult to measure resulted in equal reports around the globe. Btw. the GFZ in Potsdam has 6.9 (http://geofon.gfz-potsdam.de/eqinfo/seismon/globmon.php)
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Japan Earthquake 22.11.2016
  1. An earthquake (Replies: 4)

Loading...