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Country

Japan

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Annex 2 State*

Yes

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Signature Date

1996-09-23

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Ratification Date

1997-07-07

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Monitoring Facilties

Location Type Treaty Code Status
Japan Atomic Energy Research Institute Tokai, Ibaraki Radionuclide Laboratories RL11 Certified
Kunigami, Okinawa Auxiliary Seismic AS052 Certified
Matsushiro Primary Seismic PS22 Certified
Isumi Infrasound IS30 Certified
Ohita, Kyushu Auxiliary Seismic AS051 Certified
Hachijojima, Izu Islands Auxiliary Seismic AS053 Certified
Kamikawa-asahi, Hokkaido Auxiliary Seismic AS054 Certified
Chichijima, Ogasawara Auxiliary Seismic AS055 Certified
Okinawa Radionuclide RN37 Certified
Takasaki, Gunma Radionuclide with Noble Gas RN38 Certified

Additional Information

Japan makes voluntary contribution in support of the verification regime and GEM (20 January 2014), see CTBTO Press Release.

Tsunami Warning Agreement: signed (11 August 2008), see CTBTO press release

Following the March 2011 Japan disaster, Japan made a voluntary contribution of around US$ 737,000 in 2012 to enhance the CTBTO’s capabilities to monitor the dispersion of radioactivity in the atmosphere.

Workshops and seminars hosted (selection):

  • Hydroacoustic Workshop from 15 to 19 October 2012
  • East Asia National Data Centre Workshop from 22 to 24 September 2012
  • On-site inspection workshop from 30 June to 4 July 2003 in Hiroshima

Presided 1999 Article XIV Conference.

Ambassador Yukio Takasu, Permanent Representative to the United Nations in Vienna, was Chairperson of the CTBTO Preparatory Commission in 2004, see CTBTO press release.

Japan was the fourth State to ratify the CTBT, see CTBTO press release.

Featured station: Radionuclide station RN38, Takasaki

Facility Agreement to be concluded.  

EIF Activities

"In the face of the Great East Japan Earthquake and the subsequent nuclear accident at the Fukushima Dai-ichi Nuclear Power Station, we have received kind support and warm expressions of solidarity from around the world. The [CTBTO] undertook tremendous efforts to quickly provide to the international community accurate and objective information on the dispersion of radionuclides caused by the tsunami and the nuclear accident, using data from Japan as well."
Foreign Minister Koichiro Gemba at the 2011 Article XIV Conference in New York

The 11 March Japan disaster