Multidisciplinary and Interdisciplinary (M)
Session Sub-categoryApplied Geosciences(AG)
Session IDM-AG40
TitleCTBT IMS Technologies for Detecting Nuclear Explosion and Their Applications to Earth Science
Short TitleCTBT IMS Technologies
Main Convener NameNurcan Meral Ozel
AffiliationComprehensive Nuclear-Test-Ban Treaty Organization
Co-Convener 1NameHiroyuki Matsumoto
AffiliationJapan Agency for Marine-Earth Science and Technology
Co-Convener 2NameYosuke Naoi
AffiliationJapan Atomic Energy Agency
Session LanguageE
ScopeThe Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) was founded in 1996 in response to the adaption of the Treaty in 1996 by the United Nations General Assembly, which bans nuclear explosions on the Earth's surface, in the atmosphere, underwater and underground. The Treaty has a unique and comprehensive verification regime to make sure that no nuclear explosion goes undetected. The regime is supported by International Monitoring Systems (IMS) composed of the four state-of-art technologies; 1) Seismic, 2) Hydroacoustic, 3) Infrasound, and 4) Radionuclide, by the International Data Centre (IDC), and by the On-Site Inspections (OSI).
IMS will, when complete, consists of 337 facilities worldwide to monitor the planet for signs of nuclear explosion. Around 90 % of the facilities are in operation and sending the data to the IDC in Vienna, Austria.
The huge amount of data collected by the stations can be used for other purposes such as civil and scientific applications in addition to detecting nuclear explosions. They can provide Tsunami Warning centres with near real-time information about an underwater earthquake. During the Fukushima Daiichi Power Plant accident, in March 2011, the IMS network's radionuclide stations tracked the dispersion of radioactivity on a global scale. The data could also help better understand the oceans, volcanos, climate change, the movement of marine mammals, and many other issues.
This session will provide the overview of CTBTO and its IMS, the scientific discussion on each technology, and its outcomes. The session welcomes young scientists and engineers who are interested in four IMS technologies.
Presentation FormatOral and Poster presentation
Invited AuthorsDirk Metz (Japan Agency for Marine-Earth Science and Technology)
Noriko Kamaya (Earthquake Research Institute, the University of Tokyo)
TimePresentation NoTitlePresenterAbstract
Oral Presentation May 30 AM1
09:00 - 09:15MAG40-01Japanese Contributions and Collaborations for IMS Technologies and the Verification RegimeNurcan Meral Ozel
09:15 - 09:30MAG40-02Review: Researches on detection of nuclear tests by seismic waves in JapanNoriko Kamaya
09:30 - 09:45MAG40-03Waveform Analysis on Induced Earthquakes after the 2017 Nuclear Test and Detected Mining Events in DPRKMasashi Motohashi
09:45 - 10:00MAG40-04Submarine volcanoes and where to find them: Harnessing IMS hydroacoustic dataDirk Metz
10:00 - 10:15MAG40-05Importance of noble gas monitoring in CTBT verification technology and observation results in Takasaki radionuclide monitoring stationYoichi Yamamoto
10:15 - 10:30MAG40-06ATM analysis results on radioxenons detected in JapanYuichi Kijima
Presentation NoTitlePresenterAbstract
Poster Presentation May 30 PM2
MAG40-P01Overview of the Japanese National Data Centre-1 (NDC-1)RYOHEI EMURA
MAG40-P02Challenging to utilize the infrasound technologies for civil and science applicationMasashi Motohashi
MAG40-P03CTBT IMS hydroacoustic signal detections from the Ioto volcanic island in the northwest Pacific OceanHiroyuki Matsumoto
MAG40-P04Installation of a floating hydrophone system within the SOFAR channelHiroko Sugioka
MAG40-P05Fin whale signals observed at S-net seismic stationsTakeshi Nakamura
MAG40-P06Implementation of integrated observation from seafloor through atmosphere – past, current, and future plansKeisuke Ariyoshi