Japan is an archipelago of 6,852 islands. The four largest islands are Honshu, Hokkaido, Kyushu and Shikoku, together accounting for ninety-seven percent of Japan’s land area. Japan has the world’s tenth-largest population, with over 127 million people.

The Greater Tokyo Area, which includes the capital city of Tokyo and several surrounding prefectures, is the largest metropolitan area in the world, with over 30 million residents.

For information about Japan, and more maps visit Map of Japan or Wikipedia: Japan.

See also the reference section at the end of this page.

Quakes Seismos Tsunami Volcano Web Cams


Earthquake Listings


Seismographs in/near Japan

Note: These all open in a new tab or window.

Each station has a Z (Vertical channel) link for the seismogram for (Today UTC) and a link to the page in BUD Explorer where you can access a selection back to about 14 days. [^] opens in a new tab.

The seismograms do NOT automatically update and there may be a period for a few minutes after midnight UTC when the today version is not available. They will update if you refresh the screen they are in.

Each station is presented in the order they appear opposite which is the distance from Tokyo. Click on the map above to see the locations of most of the stations.

INU.G.00.BHZ – (Today UTC) [^] INU.G.00.BHZ in BUD [^]
JHJ2.JP..BHZ – (Today UTC) [^] JHJ2.JP..BHZ in BUD [^]
ERM.II.00.BHZ – (Today UTC) [^] ERM.II in BUD [^]
JNU.JP..BHZ – (Today UTC) [^] JHJ2.JP..BHZ in BUD [^]
ASAJ.JP..BHZ – (Today UTC) [^] ASAJ.JP..BHZ in BUD [^]
MAJO.IU.00.BHZ – (Today UTC) [^] MAJO.IU.00.BHZ in BUD [^]
CBIJ is no longer in the public domain  
INCN.IU.00.BHZ – (Today UTC) [^] INCN.IU.00.BHZ in BUD [^]
YSS.IU.00.BHZ – (Today UTC) [^] YSS.IU.00.BHZ in BUD [^]
MDJ.IC.00.BHZ – (Today UTC) [^] MDJ.IC.00.BHZ in BUD [^]
JOW.JP..BHZ – (Today UTC) [^] JOW.JP..BHZ in BUD [^]

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Tsunami Information

Volcano Information

  • Volcano Information – Japan
    Current Volcanic Warnings. There is a drop down list to home in on more localised maps.
  • JMA Monthly Volcano Activity Reports
    These are historical, about 1 to 2 months behind, PDF reports on volcano activity from the Japan Meteorological Agency.
  • List of volcanoes in Japan.
    Complete listing of active and extinct volcanoes in Japan from Wikipedia. Most of the names link to a Wikipedia page about the particular volcano. (Some links are broken)

Volcano Web Cams

No publicly available GPS facilities are known at this time. (Please leave a message if you know of access to GPS for Japan.)

Quakes Seismos Tsunami Volcano Web Cams


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Reference Materials

If you have any links that you think should be included in this section please leave the details here.

Please note this information about reference materials.

Japan (General)

Tokai (Tokyo)

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