Geospatial Information Authority of Japan(GSI) has established GNSS-based control
stations throughout the country. 1,240 control points have been set up
as of today, and are distributed at an interval of about 20km. They are
used for surveying, researches for earthquakes and volcanic eruptions.
These points enable us to monitor crustal movement in real time.
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 Latest Information on Crustal Movement（Updated every Tuesday） |
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In this page, you can see the vector map and the time series graph of
crustal deformation of the past 1 year or 1 month. And also you can download
files of the numeric data. These data are updated every Tuesday. Depending
on your PC environment, you may not be able to see these contents Flash
and Java applet are used here.
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| Long-term Information on Crustal Movement（Updated every Tuesday） |
| In this page, you can see the vector map and the time series graph of
crustal deformation of the past 10 or 5 year.
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