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Domain: bosai.go.jp

Stories and comments across the archive that link to bosai.go.jp.

Comments · 8

  1. Re:Doesn't japan have something like this? by Bushcat · · Score: 1 · on An Early Warning System For Earthquakes
    There are sensors all over the place.

    http://www.hinet.bosai.go.jp/AQUA/aqua_eq.php shows the location of any recent earthquake.

    http://www.hinet.bosai.go.jp/AQUA/max_amp.php shows all earthquakes, as animated maps. Check out 2006/11/15 20:15:58 for a very interesting animation.

    http://www.hinet.bosai.go.jp/ is the main page.

    In terms of real time alerts, if the earthquake web site's down, it means there's been an earthquake.

  2. Re:Doesn't japan have something like this? by Bushcat · · Score: 1 · on An Early Warning System For Earthquakes
    There are sensors all over the place.

    http://www.hinet.bosai.go.jp/AQUA/aqua_eq.php shows the location of any recent earthquake.

    http://www.hinet.bosai.go.jp/AQUA/max_amp.php shows all earthquakes, as animated maps. Check out 2006/11/15 20:15:58 for a very interesting animation.

    http://www.hinet.bosai.go.jp/ is the main page.

    In terms of real time alerts, if the earthquake web site's down, it means there's been an earthquake.

  3. Re:Doesn't japan have something like this? by Bushcat · · Score: 1 · on An Early Warning System For Earthquakes
    There are sensors all over the place.

    http://www.hinet.bosai.go.jp/AQUA/aqua_eq.php shows the location of any recent earthquake.

    http://www.hinet.bosai.go.jp/AQUA/max_amp.php shows all earthquakes, as animated maps. Check out 2006/11/15 20:15:58 for a very interesting animation.

    http://www.hinet.bosai.go.jp/ is the main page.

    In terms of real time alerts, if the earthquake web site's down, it means there's been an earthquake.

  4. Re:No, the time is wrong by jrumney · · Score: 2, Interesting · on Mushroom Cloud Reported Over North Korea

    The Reuters article is more vague on the time, saying sometime between Wednesday evening and Thursday morning. The only significant seismic event recorded in Fukuoka, the nearest station in Japan in that time period occured around 15:05 UTC on Wednesday (midnight local time) and lasted about 3 minutes. Someone else claimed an earthquake occured in Japan around that time, so whatever caused the mushroom cloud does not seem to have registered, ruling out a nuclear explosion. There is a seismic monitoring station at Incheon (INCN), which might show up any smaller activity in North Korea, but it seems that only US, Canada, Japan and New Zealand post their seismic graphs online.

  5. FALSE ALARM - japanese seismograph at 2 AM by Shmibbon · · Score: 4, Informative · on Mushroom Cloud Reported Over North Korea

    The 2 AM seismic event is strongest at KIS. That's located in the middle of the south shore of Japan (Chugoku-Shikoku area). It also shows up strong on the north/south motion graph (first graph is up/down).

    Check the previous days, there's plenty of spikes. It's just a damn earthquake in Japan.

  6. FALSE ALARM - japanese seismograph at 2 AM by Shmibbon · · Score: 4, Informative · on Mushroom Cloud Reported Over North Korea

    The 2 AM seismic event is strongest at KIS. That's located in the middle of the south shore of Japan (Chugoku-Shikoku area). It also shows up strong on the north/south motion graph (first graph is up/down).

    Check the previous days, there's plenty of spikes. It's just a damn earthquake in Japan.

  7. FALSE ALARM - japanese seismograph at 2 AM by Shmibbon · · Score: 4, Informative · on Mushroom Cloud Reported Over North Korea

    The 2 AM seismic event is strongest at KIS. That's located in the middle of the south shore of Japan (Chugoku-Shikoku area). It also shows up strong on the north/south motion graph (first graph is up/down).

    Check the previous days, there's plenty of spikes. It's just a damn earthquake in Japan.

  8. Re:No, the time is wrong by ultranova · · Score: 2, Insightful · on Mushroom Cloud Reported Over North Korea

    Clickable link.

    This graph shows that something began happening 450 seconds after 2:00, then suddenly grew a lot at 550, then there was a number of large spikes until about 700, after which things began to calm down.

    Could a nuclear explosion produce such a signature ? Could there be a difference in the speed of seismic waves that could cause this ?

    What I don't understand is the calm start. One would imagine that a nuclear (or any other) explosion would cause a sharp spike at the beginning and then fading echoes, not small rattle that takes a hundred seconds to grow to its maximum.