[HN Gopher] 7.3 earthquake near Fukushima in Japan
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       7.3 earthquake near Fukushima in Japan
        
       Author : asimjalis
       Score  : 67 points
       Date   : 2021-02-13 19:38 UTC (3 hours ago)
        
 (HTM) web link (www.nbcnews.com)
 (TXT) w3m dump (www.nbcnews.com)
        
       | supernova87a wrote:
       | Luckily though, it seems to have been so deep (50km) that the
       | surface effects were not as bad as could be for a 7.3.
        
       | evanb wrote:
       | https://earthquake.usgs.gov/earthquakes/eventpage/us6000dher...
        
       | Shivetya wrote:
       | The concern some have is that this earthquake could simply be the
       | lead in for the larger one to follow similar to the Tohoku quake
        
         | corey_moncure wrote:
         | There have been 9 earthquakes in this region of magnitude >=
         | 7.0 since 2011, including the 9.1 Tohoku quake. Of the
         | remaining magnitude >= 7 quakes, 5 were in 2011, 1 was in 2012,
         | and 1 in 2013, and finally the newest one yesterday.
         | 
         | Source:
         | 
         | https://earthquake.usgs.gov/earthquakes/map/?extent=16.46769...
        
           | DavidSJ wrote:
           | That's helpful information. It doesn't invalidate the
           | concern, however, since very large earthquakes are often
           | preceded by moderately large foreshocks, so there is an now a
           | temporarily elevated risk of a very large earthquake in that
           | region.
        
             | saberdancer wrote:
             | In the list you can see a foreshock happening two days
             | before 9.1 earthquake (Tohoku). Then after that you have a
             | couple of years of aftershocks. Obviously this is not a
             | guarantee "big one" is coming but it's probably good idea
             | to check contingency plans.
        
       | timr wrote:
       | NHK is reporting power and gas outages, a landslide on a highway
       | and minor infrastructure damage, but nothing severe. No nuclear
       | plants are reporting anomalies, and there's no risk of tsunami.
       | 
       | https://www3.nhk.or.jp/nhkworld/en/news/20210214_29/
       | 
       | (Edit: this is the english-language NHK and doesn't go into
       | everything I said...I'm watching the coverage on Japanese TV,
       | which is more detailed.)
        
       | johnohara wrote:
       | Japan Meteorological Agency reported it as 7.1
       | 
       | USGS reported it as 7.1
       | 
       | Prime Minister Suga reported "no anomalies, ... everything is
       | normal."
       | 
       | Okay. The Japanese have a lot of experience with earthquakes.
       | They should know. I trust the assessment.
       | 
       | The article declares it 7.3, citing the JMA, who were quoted as
       | reporting it as 7.1 in the very next paragraph.
       | 
       | No explanation anywhere for how it became 7.3.
       | 
       | Meh, what's two points on a logarithmic scale of seismic energy?
        
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       (page generated 2021-02-13 23:01 UTC)