90Sr Activity in the High Seas and Coastal Regions of Korea-Japan-Russia-China Compared with Exponential Decay of 90Sr Global Fallout

Abstract: Concentration and activity of ⁹⁰Sr in the high seas and coastal regions of Korea-Japan-Russia-China from the global fallout to 2000 were studied. The variation of ⁹⁰Sr in these study areas decreased continuously from 1964 when global fallout radioactive was started to 2000. Suggesting that from 1964 to present the ⁹⁰Sr activity from any local resources at Korea-Japan-Russia-China doesn’t significant, because the ⁹⁰Sr activities much lower compared with the exponential decay, it caused by effective environmental half-lives. In conclusion, the activity of ⁹⁰Sr in the high seas and coastal regions of Korea-Japan-Russia-China originated entirely from the global fallout rather than from any local point sources.

Key words: ⁹⁰Sr, high seas, coastal regions, exponential decay, global fallout

Author: Muslim

Journal Code: jpperikanangg070002

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