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Report No.

Development of ocean current data measured by acoustic doppler current profiler across the Tsugaru Strait

Kawamura, Hideyuki  ; Hirose, Naoki*; Nakayama, Tomoharu*; Ito, Toshimichi 

We developed ocean current data measured by an Acoustic Doppler Current Profiler attached on a ferryboat across the Tsugaru Strait from October 1999 to January 2008 in this study. It is useful to understand the characteristics of the ocean current in the Tsugaru Strait for predicting oceanic dispersion of radioactive materials released from nuclear facilities around the strait and for understanding the mechanism of the Tsugaru Warm Current. The database cosists of 2,211 daily data files from October 1999 to January 2008. The data files record the components of the current speed in the east-west and north-south directions, quafifying flags and so on. The ocean current data was frequently acquired in summer compared with winter. The strong eastward ocean current corresponding to the Tsugaru Warm Current was confirmed by analyzing the ocean current data. We expect that the database will be used by many users for oceanographical study.



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