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Site Policy

This site is based on JAMSTEC site policy except for the recommended operational environments.

Recommended environments


  • Firefox 61.0 or above
  • Safari 11.1 or above
  • Google Chrome 68.0 or above
  • *Internet Explorer may not display the map. Please use any of the recommended browser versions listed above.

Viewport size of browsers

We recommend using viewport size of browsers more than 1024 * 768 pixels.
Some contents of this website are responsively designed to work on different screen sizes.
The layout of contents will change to respond to the screen size.


This site contains JavaScript.
In order to view all of the contents, JavaScript must be enabled within your browser settings. Please see a help page of your browser to enable JavaScript.