What's Pacific 21 ?

  Pacific21 is a generic name for the geophysical observation network in Western Pacific region operated by research institutions in Japan. Operation of the network is coordinated by the committee for global geophysical observation under the Science Council of Japan. Observed data are distributed through each research institution and Global Network Data Center of IFREE/JAMSTEC.

Map of OHP Stations on Google Earth

Map of OHP Seismic Stations


Download OHP Data via NINJA

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List of Seismic Stations


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Powerful Tools Developed by the Data Center of IFREE/JAMSTEC


Recommended Operating Systems and Browsers Data Distribution Policy
Windows XP SP2
- InternetExplorer 6.0 SP2
- Netscape 7.0
- Safari 3.1
MacOS 9
- InternetExplorer 5.1 (Needs MRJ)
MacOS X 10.3
- Safari 1.2
Solaris 8, 9, 10
- Netscape 7.0 		  The data of the Institute for Research on Earth Evolution (IFREE), the Japan Agency for Marine-Earth Science and Technology (JAMSTEC) are originally provided by the Ocean Hemisphere Network Project (OHP). The data provided by OHP can be used only for the scientific purpose. At the presentation of data analyses and results, users are requested to show the origin of the data as OHP and IFREE/JAMSTEC explicitly. In no event shall the IFREE/JAMSTEC be liable to any party for damages arising out of the use of this software and data.

Link Contact us
Ocean Hemisphere Project
(Earthquake Research Institute, the University of Tokyo)
Institute for Research of Earth Evolusion (IFREE)		 Research Program for Data and Sample Analyses
Institute for Research on Earth Evolution
Japan Agency for Marine-Earth Science and Technology
3173-25 Showa-machi, Kanazawa-ku
Yokohama 236-0001 JAPAN
ifreedmc-admin@jamstec.go.jp