New North Korean nuclear test and role of the station VRAC in the framework of the International Monotoring System of the CTBTO
Vol.23,No.1-2(2016)
Many seismological stations situated all round the world have registered seismic signal related to North Korean nuclear test explosion conducted on 6th January 2016. Good seismic record was provided also by station VRAC operated by IPE (Institute of Physics of the Earth) which is part of the International monitoring system CTBTO focused on the verification of the compliance with the Comprehensive Nuclear-Test-Ban Treaty. Seismic network of the International monitoring system CTBTO is composed of 170 seismic stations. Data are transmitted into International Data Centre in Vienna. In the IPE, Czech “National Data Centre” (NDC) is established, which is responsible for operation of station VRAC and technical information of state authorities. Czech NDC provides also independent data processing of important seismic events, such as the Korean nuclear test. Results of seismic data processing prove very close position of epicentre of the discussed explosion in comparison to previous North Korean nuclear tests conducted in 2006, 2009 and 2013 at the nuclear test site Punggye-ri. Calculated values of body wave magnitude mb (the body wave magnitude mb reaches value from 4.8 according IDC CTBTO to 5.1 according U. S. seismological survey NEIC) show, that yield of the 2016 test explosion is probably slightly lower relative to the 2013 nuclear test.
seismické monitorování; CTBTO; jaderná exploze; stanice VRAC
Bowers D. – Selby N. D. (2009): Forensic Seismology and the Comprehensive Nuclear-Test-Ban Treaty. – Annu. Rev. Earth Planet. Sci., 37, 209-236. https://doi.org/10.1146/annurev.earth.36.031207.124143">https://doi.org/10.1146/annurev.earth.36.031207.124143
Havíř J. (2013): Záznamy severokorejských jaderných explozí na seismické stanici VRAC. – Geol. výzk. Mor. Slez. v roce 2012, 20, 1-2, 185-187.
Havíř J. – Švancara J. – Otruba J. (2003): Úloha a využití nově certifikované seismologické stanice VRAC v rámci Mezinárodního monitorovacího systému CTBTO. – In: Sborník 12.regionální konference "Nové výsledky seismologických, geofyzikálních a geotechnických průzkumů". Sborník vědeckých prací VŠB–TU Ostrava , řada stavební, 3, 2, 77-84.
Hoffmann W. – Kebeasy R. – Firbas P. (1999): Introduction to the verification regime of the Comprehensive Nuclear-Test-Ban Treaty. – Physics of the Earth and Planetary Interiors, 113, 1-4, 5-9.
Zhang M. – Wen L. (2013): High-precision location and yield of North Korea's 2013 nuclear test. – Geophysical Reserach Letters, 40, 2941-2946.
