2000+ nuclear explosions
Sites of nuclear explosions Tests after 24 September 1996
13 kt 50.000 kt
Tsar Bomba http://youtube.com/watch?v=FfoQsZa8F1c
Scale comparison
Hiroshima 13 kt
U.S. B83 bomb 1200 kt
Soviet Tzar Bomba 50 mt
Chinese DF-5A warhead 4,5 mt
4630 kg 23 kg
W87 warhead – 300 kt
Atmospheric and
Underground
Nuclear Testing
CTBT Treaty Status,
February 2013
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Eight countries have to
ratify for entry into force
Listening for Nuclear Noise
PTS/IDC February 2013
Detecting IMS Stations (Seismic & Infrasound)
Page 15
PTS/IDC February 2013 Page 16
Event Locations Comparison (2006, 2009, 2013)
Tunnel Entrance
PTS/IDC February 2013
Particulate and Noble Gas Systems Status of Installations Feb 2013
PTS/IDC February 2013 Page 18
Atmospheric transport modeling assuming
release from seismic event location
Assuming continuous venting from underground event
(0-30m altitude)
Animated model of dispersion of emitted gas (9 to 30 October 2006)
8 October 2009
IFEO8 – OSI Field Exercise
in Kazakhstan
8 October 2009
IFEO8 – OSI Field Exercise
Checking for contamination
8 October 2009
IFEO8 – OSI Field Exercise
OSI inspector prepares ground-penetrating radar to detect changes in underground
Events Located by the IDC February 2000- August 2011
333,329 events
CTBTO verification technologies
are also used for disaster
warning and mitigation.
CTBTO Tracks Fukushima's
Radioactive Release
Thank You! Annika Thunborg Spokesperson and Chief of Public Information,
Tel: +43-1-26030-6375 or +43-699-1459-6375 Email: [email protected] Connect with CTBTO on: