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Temporal and lateral variations of $$^{7}$$Be depositions in Hokuriku, Japan

Yoshida, Keisuke; Kato, Shingo; Uchida, Kengo*; Yamashita, Masahiro; Okuyama, Shinichi ; Inoue, Mutsuo*

In winter, $$^{7}$$Be deposition profile shows wide variation in Hokuriku region. Temporal and regional variations of $$^{7}$$Be deposition data during 30 years (Apr. 1991 to Mar. 2021) were analyzed and material transport mechanisms from arctic region were studied. Due to pressure pattern around Japan in winter and inhomogeneous precipitation in Hokuriku region caused by topography, characteristic seasonal variation was found and highest $$^{7}$$Be deposition was observed in mountainous area in Kanazawa City. In addition, the period of high $$^{7}$$Be deposition observed approximately agreed with that of minimum sunspot number or maximum precipitation. Therefore, sunspot number and precipitation affect temporal variations of $$^{7}$$Be deposition.

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English

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K-INET International Symposium Joint Usage/Joint Research on Transboundary Pollution and its Impact on Social Environment

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2022/12

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online

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Japan

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