Ctbto

How To Detect A Secret Nuclear Test

Order: Reorder
Duration: 3:48
Updated: 25 Jun 2015
views: 1082908

Thanks to the CTBTO for helping keep the world safe by detecting secret nuclear tests. http://www.ctbto.org http://www.twitter.com/ctbto_alerts http://www.facebook.com/CTBTO http://www.youtube.com/CTBTO Music by Nathaniel Schroeder http://www.soundcloud.com/drschroeder This video made possible by the following Patreon Supporters: Today I Found Out Jeff Straathof Avi Yashchin Mark Jeremy Cummings Wes Brown John Green Rafael Ferreira Luciano Florian Philipp Rens van der Heijden Risa Galant Ricky Shields Kristina Foss PetWolverine Trent Sutherland Ian Foote Eszter Szikora Tasso Kostalas (MavericSun) Amandeep Hayer Abraão Caldas Eric Ma Conner Fissell Bob Bolch Daniel Ametsreiter Joël Quenneville Richard Pearson David Dailey Steven Mulder Karim Ryan Kyle William Ricketts Collin Mandris Jonathan Foster Siddharth Sadanand Robby Olivam Alan Browning Jonathan Piersa Jake Stolhandske Julia Person James Craver Sarah Chavis Yonatan Bisk Richard Campbell Richie Swift Chris Barrett Jan Amza Christopher Coleman David Tebbe Kelvin Dueck Daniel “YoureDown” Breger Hendrik Payer Greck Cannon Chris Peters Landy Manderson Lewis Goddard Seamus Campbell Greg Holger R. Austin Keller Alejandro Medrano Gil Prof Stick Cora Toner Chris Thompson Alan Lam Andrew Collings Mike McHargue Nicholas Buckendorf Blair Bradimore Michael Biot nir lifshitz Nicholas Carroll Edwin Zea Diana Dial Mitch Etzkin Lightbow Dante Santos Mathias Westad Larssen Tom Headley Michael K Geoff Wallace Fredrik Samuelsson Melissa Harkins Jason Talley Keith Marrocco Maarten Bremer Eric Laberge Lacey Larson Neil Ramroop Matthew Norton Efe Efevich Mark Donal Botkin Sylvan Ruud Daniel Friesen Philipi Adolfo Willemann Jeffrey McCullough Oddgeir Ann Brendon Davis Filip Christopher Jimenez Michel Payette Juha Niittynen Jeff Ross Viktor Liljeblad Robert E DeLapp Sean Linsley Christopher O’Neal Marcus Philip Freeman Matthew Heermann Marsha Woerner Daniel Yip Matt K William Pearson Kevin Lynch Nick Ward Kevin john eriksson Allan Farrell Tobias Olesen Chris Chapin Michael Keefe Jon Mann Bert Joji Wata Adam Naber Rob Ibsen Jacob Gumpert Peter Collier Andi Davis Raymond Cason Evan Gale Paul Tori McClanahan Dominik Danilo Metzger Christian Altenhofen Roy Morgan Olivia Darroch Amber Ciarvella ryan horlacher Keith Chang Janel Christensen Will Scherer Mike Fulcher Larom Lancaster John Harman Matt Christos Papandreou Fernando Pazin Jason Medrano Andrew Barnett Katharina Schuchmann John Gietzen Michael Tardibuono Matthew Hebert Pierre-Louis Bourgeois Genevieve Lawrence Brian D’Agostini Chris Dominik Menzi Ryan A. Schauer Daniel Johnson Nico Houbraken Michael Carr Ragnhild Elizabeth Meisterling Lysann Schlegel Magnus Krokstad Owain Blackwood Russ Arrell Maarten Daalder Brenden Bullock Mark Samberg Tina Johnston Mike Cochrane Tom Murphy Peter L Jeff Erica Pratt David Artur Szczypta David Drueding Nicklas Ulvnäs Nigel W James Nelson Mary Foster-Smith Clayton Neff Michael Merino Jason and Gayle Corfman Mihaly Barasz Steven Klurfeld Richard Bairwell Tamas Bartal Erven Justin Prahl Michael Maitlen Hans van Staveren Kasey Karlin Nazario Marie Conrad Jacques LABBÉ Geralyn Byers jason black Candice Blodgett Daniel Gibbs Henry Berthelsen Andy Kittner Steve Hall Rob Snyder John Kelly Jessica Rosenstein Bill Tomiyasu Vasco Simões Simon Hammersley iain Holger Alexis Carpenter Jay Goodman Joseph Perry Mark Govea Eduardo Rampelotto Gatto

wn.com/How To Detect A Secret Nuclear Test

How the International Monitoring System works

Order: Reorder
Duration: 1:46
Updated: 05 Mar 2012
views: 9267

The CTBTO uses hydroacoustic, radionuclide, seismic and infrasound monitoring to watch the world for any nuclear test.

wn.com/How The International Monitoring System Works

CTBTO Detects Radioactivity Consistent with North Korean Nuclear Test, announced Feb 2013

Order: Reorder
Duration: 2:57
Updated: 23 Apr 2013
views: 8525

The CTBTO's radionuclide network has made a significant detection of radioactive noble gases that could be attributed to the nuclear test announced by the Democratic People's Republic of Korea (DPRK) on 12 February 2013. The detection was made at the radionuclide station in Takasaki, Japan, located at around 1,000 kilometres, or 620 miles, from the DPRK test site. Two isotopes of the radioactive noble gas xenon were identified, xenon-131m and xenon-133. Both of these isotope detections are reliable and provide information on the nuclear nature of the source. The ratio of the detected xenon isotopes is consistent with a nuclear fission event occurring more than 50 days before the detection (nuclear fission can occur in both nuclear explosions and nuclear energy production). This coincides very well with announced nuclear test by the DPRK that occurred on 12 February 2013, 55 days before the measurement. Using Atmospheric Transport Modelling (ATM), which calculates the three-dimensional travel path of airborne radioactivity on the basis of weather data, the DPRK test site was identified as a possible source for the emission. Credits: Camera: Pablo Mehlhorn Editing: Krzysztof Kolasinski Producer: Kirstie Gregorich Hansen

wn.com/Ctbto Detects Radioactivity Consistent With North Korean Nuclear Test, Announced Feb 2013

One－on－one with Executive Secretary of CTBTO， Lassina ZERBO

Order: Reorder
Duration: 7:50
Updated: 07 Dec 2015
views: 163

한유엔 군축비확산회의 참석 방한 포괄적핵실험금지조약 CTBTO 사무총장 라시나 제르보 대담 One of the key discussion leaders at the 14th South Korea， United Nations Joint Conference on Disarmament and Non－proliferation Issues is Lassina Zerbo， the Executive Secretary of the Comprehensive Nuclear－Test－Ban Treaty Organization based in Vienna， Austria. He joins me live in our Newscenter studio. Mr. Zerbo， great to have you with us. For those of us not in the know， why don′t you begin by explaining what your organization， Comprehensive Nuclear－Test Ban Treaty Organization is... what your primary function is. As I briefly mentioned at the top of our one－on－one segment， you are here to attend the 2015 South Korea， UN disarmament conference. The theme this year － Unfinished Business of Building a More Secure World. Have you made any progress in coming up with practical steps to revive denuclearization talks with North Korea？ What is CTBTO′s stance on North Korea′s nuclear ambitions？ Your view of the current nuclear security in North Korea？ Are there ways for CTBTO to step in and enforce a ban on North Korea from carrying out nuclear explosions testing？ What is your prospects for a nuclear－free Korean peninsula and how would you ensure nuclear security on the peninsula？ Thank you， indeed， for coming into our studio， Mr. Zerbo － we look forward to speaking with you again in the near future.

wn.com/One－On－One With Executive Secretary Of Ctbto， Lassina Zerbo

CTBTO Tracks Fukushima's Radioactive Release

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Duration: 1:40
Updated: 12 Mar 2012
views: 14036

Animation of the global spread of radioactive isotopes from Fukushima, after the devastating tsunami that struck Japan 11 March 2011. ------ More than 1600 detections of radioactive isotopes from the Fukushima Nuclear Power Plant were picked up by over 40 CTBTO radionuclide monitoring stations. The data was used to track the crisis and keep authorities informed.

wn.com/Ctbto Tracks Fukushima's Radioactive Release

Reflections on 15 years of CTBTO

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Duration: 36:58
Updated: 27 Mar 2012
views: 586

A Grand Design Becomes Reality CTBTO staff recall the organization's 15-year journey. Camera: Manfred Lesiak, Todd Vincent and Pablo Mehlhorn Editing: Fred Ilger Producer: Angela Leuker Our sincere thanks to all who took part. Additional Footage courtesy of John Anderson. Additional photographic images courtesy of Gerdi Stoppel and Todd Vincent. (c) 2012 CTBTO Public Information

wn.com/Reflections On 15 Years Of Ctbto

CTBTO Shoot For "One Day on Earth"

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Duration: 4:05
Updated: 01 Feb 2013
views: 631

A trailer from the CTBTO shoot captured on 12.12.12 , as a contribution to the One Day On Earth project. Across the planet that day, documentary filmmakers, students, and other inspired citizens recorded the human experience over a 24-hour period. Camera: Manfred Lesiak, Producer: Kirstie Gregorich Hansen, Video Editing: Kris Kolasinski. Contributions from Jacques Pretorius and Sergelen Bazarragchaa who provided footage they captured during their work in the field that day.

wn.com/Ctbto Shoot For One Day On Earth

Infrasound Station, Qaanaaq, Greenland

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Duration: 2:21
Updated: 19 Mar 2012
views: 8764

At a remote outpost in Qaanaaq, Greenland, engineers upgrade a CTBTO infrasound station. ------ It's part of a global network to detect atomic blasts. Read more here: http://www.ctbto.org/verification-regime/featured-stations/types/infrasound/is18-qaanaaq-greenland-denmark/page-1-is18/?Fsize=a

wn.com/Infrasound Station, Qaanaaq, Greenland

Russian Fireball Largest Ever Detected by CTBTO's Infrasound Sensors

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Duration: 0:45
Updated: 19 Feb 2013
views: 173327

Infrasonic waves from the meteor that broke up over Russia's Ural mountains last week were the largest ever recorded by the CTBTO's International Monitoring System. Infrasound is low frequency sound with a range of less than 10 Hz. The blast was detected by 20 infrasound stations in the CTBTO's network, which tracks atomic blasts across the planet. Listen to the audio files of the infrasound recording after it has been filtered and the signal accelerated. Read more:http://www.ctbto.org/press-centre/press-releases/2013/russian-fireball-largest-ever-detected-by-ctbtos-infrasound-sensors/ The recording was sped up 135 times, in reality it lasted 25 minutes! The sound files were produced by CTBTO's infrasound guru Pierrick Mialle. For those interested in getting really techie, Pierrick says the sound file he produced lasts 14 seconds (which corresponds to 31.5 minutes at real "speed"). When you listen you can hear the meteorite detection for about 8 seconds (or 18 minutes at real "speed"). Pierrick modified the speed but also changed the frequency content -- so that you can better hear the signal against any background noise. To get a more precise duration of the signal that was recorded by the Kazakh infrasound station than you hear in the animation, Pierrick used specialized software and voilà - we have 25 minutes. Pierrick is part of a team of dedicated scientists in the CTBTO's International Data Centre -- who spend their days monitoring the world for nuclear tests. Between 17 and 21 June scientist from all over the world will be meeting in Vienna to promote the wider scientific application of data that are used for test-ban verification. Read more: http://www.ctbto.org/specials/snt2013/ Animation: Krzysztof Kolasinski; scientific data: Pierrick Mialle. Producer: Kirstie Gregorich Hansen

wn.com/Russian Fireball Largest Ever Detected By Ctbto's Infrasound Sensors

CTBTO Sound Quiz # 1

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Duration: 0:36
Updated: 01 Feb 2013
views: 980

This sound was recorded by underwater microphones (hydrophones) at the CTBTO's hydroacoustic station in Cape Leeuwin in Western Australia. Can you guess what it is? See the comment below for the answer. The CTBTO (Comprehensive Nuclear-Test-Ban Treaty Organization) is building & operating a global network of over 300 stations to detect the slightest sign of a nuclear explosion to verify the Comprehensive Nuclear-Test-Ban Treaty (CTBT). We have released some of the sounds recorded by our hydroacoustic and infrasound stations in the run up to the 2013 meeting of the American Association for the Advancement of Science (AAAS) in Boston from 14 to 18 February 2013. More on the CTBTO's presence at the AAAS meeting: http://www.ctbto.org/aaas

wn.com/Ctbto Sound Quiz 1

CTBTO Sound Quiz # 3

Order: Reorder
Duration: 0:36
Updated: 04 Feb 2013
views: 505

This sound was recorded by an underwater microphone (hydrophone) at the CTBTO's hydroacoustic station on Wake Island in the North Pacific Ocean on 11 March 2011. Can you guess what it is? See the comment below for the answer. The CTBTO (Comprehensive Nuclear-Test-Ban Treaty Organization) is building & operating a global network of over 300 stations to detect the slightest sign of a nuclear explosion to verify the Comprehensive Nuclear-Test-Ban Treaty (CTBT). We have released some captivating sounds recorded by our hydroacoustic and infrasound stations in the run up to the 2013 meeting of the American Association for the Advancement of Science (AAAS) in Boston from 14 to 18 February 2013. More on the CTBTO's presence at the AAAS meeting: http://www.ctbto.org/aaas

wn.com/Ctbto Sound Quiz 3

CTBTO Sound Quiz # 4

Order: Reorder
Duration: 0:44
Updated: 06 Feb 2013
views: 495

This sound was recorded by the CTBTO's infrasound station in Freyung, Germany. What do you think it was? See the comment below for the answer. The CTBTO (Comprehensive Nuclear-Test-Ban Treaty Organization) is building & operating a global network of over 300 stations to detect the slightest sign of a nuclear explosion to verify the Comprehensive Nuclear-Test-Ban Treaty (CTBT). We have released some captivating sounds recorded by our hydroacoustic and infrasound stations in the run up to the 2013 meeting of the American Association for the Advancement of Science (AAAS) in Boston from 14 to 18 February 2013. More on the CTBTO's presence at the AAAS meeting: http://www.ctbto.org/aaas

wn.com/Ctbto Sound Quiz 4

Sound from CTBTO Hydrophone of Interest to Search for Missing Flight MH 370

Order: Reorder
Duration: 0:26
Updated: 04 Jun 2014
views: 1602

This spectrogram represents the signal that was recorded by the CTBTO's hydrophones at the Cape Leeuwin station in Western Australia at 1:34:48 UTC on 8 March 2014. Researchers are examining the sound in connection to the missing Malaysian Airlines flight MH370. The spectrogram shows the signal broken up into time and frequency. The white line is a filtered version of the sound showing an unusual signal in the middle (heard at seven seconds into the recording). The recording is speeded up by a factor of 16 to make it audible to the human ear. "Every day we detect dozens of signals at Cape Leeuwin and most of them are from earthquakes around the Indian Ocean and ice-breaking events in Antarctica. The signal of interest came from a direction that we don't normally see so it's certainly not an everyday occurrence. Relating it to the airliner is difficult, however, especially given the large uncertainty in where and when any impact may have happened." CTBTO hydroacoustic expert, Dr Mark Prior said.

wn.com/Sound From Ctbto Hydrophone Of Interest To Search For Missing Flight Mh 370

Statement: CTBTO head Tibor Tóth on the declared nuclear test by North Korea

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Duration: 1:14
Updated: 12 Feb 2013
views: 1628

Statement from CTBTO Executive Secretary Tibor Tóth on the declared Nuclear Test by North Korea. "Early in the morning today, the international monitoring system of the Nuclear Test-Ban Treaty Organization detected a suspicious event on the territory of North Korea. To put it in a context, historically there are very few seismic events on the territory of the DPRK. Number two, the event location is congruent with those locations which were the 2006 and the 2009 nuclear test explosions. This suspicious event is of magnitude 4.9." "The important element is that the member states of the Test-Ban Treaty and the organization are observing a silence of nuclear explosions. There is a no test environment for this millennium with the exception of one country, the DPRK." "This DPRK-announced nuclear explosion is going in the wrong direction, this is a wrong step in the wrong direction and this is a challenge to this norm observed by the international community of not carrying out nuclear weapon explosions."

wn.com/Statement Ctbto Head Tibor Tóth On The Declared Nuclear Test By North Korea

▶ CTBTO Public Service Announcement

Order: Reorder
Duration: 0:31
Updated: 18 May 2015
views: 126

wn.com/▶ Ctbto Public Service Announcement

Dr. Gerhard Wotawa on Fukushima Daiichi Releases (CTBTO, ZAMG Official)

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Duration: 4:33
Updated: 29 Sep 2014
views: 1408

RT interview with Dr. Gerhard Wotawa, CTBTO Atmospheric Sciences Officer in the Radionuclide Development Unit and head of ZAMG's (Austria) forecast models, at start of Fukushima releases:: "['Low levels' of radioactivity from Fukushima] can of course spread over all the areas of the world. But it will not pose any significant health risks beyond the immediate areas of the reactors, and some hundreds of kilometers to a few thousands of kilometers. So that means, for most areas of the world, it will be low levels of radioactivity… The rain would release the radiation from the atmosphere and will directly put it on the ground. The very long-lived radionuclides like the cesium will stay around there 20, 30, 40, and more years, and could affect the agriculture… The radionuclides, they can be easily washed of the atmosphere, and in the pathway from Japan to the Pacific Ocean, and across the Pacific Ocean, supposedly there will be precipitation of the rain and most of the particles will be removed by the rain… We assume that there’s a lot of radioactivity now coming into the water from the plant itself… In reality there may be some health effects, but it depends very much on the level of radioactivity that comes out of the atmosphere.”

wn.com/Dr. Gerhard Wotawa On Fukushima Daiichi Releases (Ctbto, Zamg Official)

Robinson Crusoe Island: Ocean Sentinel (CTBTO)

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Duration: 14:26
Updated: 31 Oct 2014
views: 1036

United Nations - Robinson Crusoe Island – a place so remote that the famous novel by Daniel Defoe was inspired by its history. But the island’s modern-day role is far from fictional. Today it’s a crucial link in the planet’s security network – keeping a constant look-out for seismic events, both natural and man-made. 21st Century, Episode #95 Script: Script: http://www.un.org/webcast/pdfs/21stcentury95robinsoncrusoe.pdf

wn.com/Robinson Crusoe Island Ocean Sentinel (Ctbto)

Disarmament Talk with CTBTO Executive Secretary Dr Lassina Zerbo

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Duration: 16:31
Updated: 31 Jan 2016
views: 112

During the symposium 'Science and Diplomacy for Peace and Security: the CTBT@20' from 25 January to 4 February 2016 at the Vienna International Centre in Austria, IDN-InDepthNews (IDN), flagship ofthe International Press Syndicate (INPS), interviewed Dr. Lassia Zerbo, Executive Secretary of the Comprehensive Nuclear Test Ban Treaty Organization (CTBTO). The interview focuses on what the CTBT is about, why it has not yet entered into force, and what the CTBTO is doing to overcome hurdles on way to its becoming a de jure global treaty. The interview is part of a series of Disarmament Talks the International Press Syndicate initiated during the 25th UN Conference on Disarmament Issues in Hiroshima 26-28 August 2015. It was conducted by Ramesh Jaura, Director-General and Editor-in-Chief of INPS and IDN, and edited by Katsuhiro Asagiri, President of INPS Japan and head of INPS East Asia in Tokyo.

wn.com/Disarmament Talk With Ctbto Executive Secretary Dr Lassina Zerbo

CTBTO – “Comprehensive Nuclear-Test-Ban Treaty” Exhibition

Order: Reorder
Duration: 3:34
Updated: 04 Sep 2015
views: 48

Within the system of nuclear disarmament and anti-proliferation, the Comprehensive Nuclear-Test-Ban Treaty – CTBT – is an important factor. Supervising it is the CTBTO in Vienna. The organisation has a worldwide net of measuring stations. Germany is strongly involved. https://www.deutschland.de/en/topic/politics

wn.com/Ctbto – “Comprehensive Nuclear Test Ban Treaty” Exhibition

CTBTO - Ausstellung zum „Vertrag über das umfassende Verbot von Nuklearversuchen“

Order: Reorder
Duration: 3:42
Updated: 04 Sep 2015
views: 92

Im System der nuklearen Abrüstung und Nichtverbreitung ist der Vertrag über das umfassende Verbot von Nuklearversuchen (Comprehensive Nuclear-Test-Ban Treaty - CTBT) ein wesentlicher Baustein. Überwacht wird der Vertrag von der CTBTO in Wien. Diese verfügt über ein weltweites Netz von Messstationen. Auch Deutschland ist darin stark engagiert. https://www.deutschland.de/de/topic/politik

wn.com/Ctbto Ausstellung Zum „Vertrag Über Das Umfassende Verbot Von Nuklearversuchen“

CTBTO Press Conference on Declared North Korean Nuclear Test

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Duration: 2:36
Updated: 12 Feb 2013
views: 684

Briefing on Declared North Korean Nuclear Test to the international press corps gathered at the CTBTO's Vienna, Austria headquarters at 11:00 CET Tuesday 12 February 2013

wn.com/Ctbto Press Conference On Declared North Korean Nuclear Test

Civil and Scientific Applications

Order: Reorder
Duration: 1:16
Updated: 20 Oct 2008
views: 1087

CTBTO verification technologies are also used for disaster warning and mitigation. Clip 15 from CTBT: For a Safer and More Secure World (c) CTBTO 2007

wn.com/Civil And Scientific Applications

15 Years of the CTBTO -- Visit by United Nations Secretary-General Ban Ki-moon

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Duration: 3:10
Updated: 20 Feb 2012
views: 1007

High-level dignitaries call for Treaty to enter into force at the CTBTO's 15th anniversary celebrations. ------ The United Nations Secretary-General Ban Ki-moon and other high-level dignitaries attended the 15 year anniversary of the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) at the Vienna International Centre in Austria 17 February 2012. The event was musically framed by a large choir from the American International School of Vienna and attended by the diplomatic community, NGOs, international media and staff of other Vienna-based organizations -- over 500 participants in total. The event also marked the opening of the UN Office for Disarmament Affairs' Vienna base.

wn.com/15 Years Of The Ctbto Visit By United Nations Secretary General Ban Ki Moon

How To Detect A Secret Nuclear Test

How the International Monitoring System works

CTBTO Detects Radioactivity Consistent with North Korean Nuclear Test, announced Feb 2013

One－on－one with Executive Secretary of CTBTO， Lassina ZERBO

CTBTO Tracks Fukushima's Radioactive Release

Reflections on 15 years of CTBTO

CTBTO Shoot For "One Day on Earth"

Infrasound Station, Qaanaaq, Greenland

Russian Fireball Largest Ever Detected by CTBTO's Infrasound Sensors

CTBTO Sound Quiz # 1

CTBTO Sound Quiz # 3

CTBTO Sound Quiz # 4

Sound from CTBTO Hydrophone of Interest to Search for Missing Flight MH 370

Statement: CTBTO head Tibor Tóth on the declared nuclear test by North Korea

How To Detect A Secret Nuclear Test

How the International Monitoring System works

CTBTO Detects Radioactivity Consistent with North Korean Nuclear Test, announced Feb 2013

One－on－one with Executive Secretary of CTBTO， Lassina ZERBO

CTBTO Tracks Fukushima's Radioactive Release

Reflections on 15 years of CTBTO

CTBTO Shoot For "One Day on Earth"

Infrasound Station, Qaanaaq, Greenland

Russian Fireball Largest Ever Detected by CTBTO's Infrasound Sensors

CTBTO Sound Quiz # 1

CTBTO Sound Quiz # 3

CTBTO Sound Quiz # 4

Sound from CTBTO Hydrophone of Interest to Search for Missing Flight MH 370

Statement: CTBTO head Tibor Tóth on the declared nuclear test by North Korea

▶ CTBTO Public Service Announcement

Dr. Gerhard Wotawa on Fukushima Daiichi Releases (CTBTO, ZAMG Official)

Robinson Crusoe Island: Ocean Sentinel (CTBTO)

Disarmament Talk with CTBTO Executive Secretary Dr Lassina Zerbo

CTBTO – “Comprehensive Nuclear-Test-Ban Treaty” Exhibition

CTBTO - Ausstellung zum „Vertrag über das umfassende Verbot von Nuklearversuchen“

CTBTO Press Conference on Declared North Korean Nuclear Test

Civil and Scientific Applications

15 Years of the CTBTO -- Visit by United Nations Secretary-General Ban Ki-moon

How To Detect A Secret Nuclear Test

How the International Monitoring System works

CTBTO Detects Radioactivity Consistent with North Korean Nuclear Test, announced Feb 2013

One－on－one with Executive Secretary of CTBTO， Lassina ZERBO

CTBTO Tracks Fukushima's Radioactive Release

Reflections on 15 years of CTBTO

CTBTO Shoot For "One Day on Earth"

Infrasound Station, Qaanaaq, Greenland

Russian Fireball Largest Ever Detected by CTBTO's Infrasound Sensors

CTBTO Sound Quiz # 1

CTBTO Sound Quiz # 3

CTBTO Sound Quiz # 4

Sound from CTBTO Hydrophone of Interest to Search for Missing Flight MH 370

Statement: CTBTO head Tibor Tóth on the declared nuclear test by North Korea

▶ CTBTO Public Service Announcement

Dr. Gerhard Wotawa on Fukushima Daiichi Releases (CTBTO, ZAMG Official)

Robinson Crusoe Island: Ocean Sentinel (CTBTO)

Disarmament Talk with CTBTO Executive Secretary Dr Lassina Zerbo

CTBTO – “Comprehensive Nuclear-Test-Ban Treaty” Exhibition

CTBTO - Ausstellung zum „Vertrag über das umfassende Verbot von Nuklearversuchen“

CTBTO Press Conference on Declared North Korean Nuclear Test

Civil and Scientific Applications

15 Years of the CTBTO -- Visit by United Nations Secretary-General Ban Ki-moon

How To Detect A Secret Nuclear Test

How the International Monitoring System works

CTBTO Detects Radioactivity Consistent with North Korean Nuclear Test, announced Feb 2013

One－on－one with Executive Secretary of CTBTO， Lassina ZERBO

CTBTO Tracks Fukushima's Radioactive Release

Reflections on 15 years of CTBTO

CTBTO Shoot For "One Day on Earth"

Infrasound Station, Qaanaaq, Greenland

Russian Fireball Largest Ever Detected by CTBTO's Infrasound Sensors

CTBTO Sound Quiz # 1

CTBTO Sound Quiz # 3

CTBTO Sound Quiz # 4

Sound from CTBTO Hydrophone of Interest to Search for Missing Flight MH 370

Statement: CTBTO head Tibor Tóth on the declared nuclear test by North Korea

How To Detect A Secret Nuclear Test...

How the International Monitoring System works...

CTBTO Detects Radioactivity Consistent with North ...

One－on－one with Executive Secretary of CTBTO， Lass...

CTBTO Tracks Fukushima's Radioactive Release...

Reflections on 15 years of CTBTO...