日本地球惑星科学連合2021年大会

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[E] 口頭発表

セッション記号 M (領域外・複数領域) » M-AG 応用地球科学

[M-AG37] CTBT IMS Technologies for Detecting Nuclear Explosion and Their Applications to Earth Science

2021年6月6日(日) 15:30 〜 17:00 Ch.20 (Zoom会場20)

コンビーナ:Nurcan Meral Ozel(Comprehensive Nuclear-Test-Ban Treaty Organization)、松本 浩幸(国立研究開発法人海洋研究開発機構)、Dirk Metz(Japan Agency for Marine-Earth Science and Technology)、直井 洋介(国立研究開発法人日本原子力研究開発機構)、座長:Nurcan Meral Ozel(Comprehensive Nuclear-Test-Ban Treaty Organization)、松本 浩幸(国立研究開発法人海洋研究開発機構)、Dirk Metz(Japan Agency for Marine-Earth Science and Technology)

16:30 〜 16:45

[MAG37-05] CTBT 高崎希ガス監視観測所および2 つの臨時希ガス観測システムで測定されたXe-133 の高濃度
検出事象に関する発生源推定のための大気拡散解析

*古野 朗子1、木島 佑一1、冨田 豊1、山本 洋一1 (1.日本原子力研究開発機構)

キーワード：CTBT、大気拡散シミュレーション、放出源推定、高濃度検出事象

This research aims at source term estimations of high-concentration detection events of Xe-133, which were observed at the CTBT IMS (International Monitoring System) Takasaki radionuclide monitoring station from the viewpoint of atmospheric dispersion analysis. Japan Atomic Energy Agency operates JPX38 in the Takasaki radionuclide station for noble gas monitoring, and conducts temporary measurement project of radioxenon at Horonobe in Hokkaido (JPX81) and Mutsu in Aomori (MUX88) as a part of the noble gas joint measurement project with CTBTO. The high-concentration detection events were frequently occurred not only at the JPX38 but also at the JPX81from the end of 2020 to January 2021. In the presentation, we will describe the source term estimation analysis of these high-concentration detection events, and discuss the relationship of the events between two stations.