[U-03] Advanced understanding of Quaternary and Anthropocene hydroclimate changes in East Asia

[U03-P04] Salinity, oxygen isotope, hydrogen isotope, and radiocarbon of coastal seawater of North Japan

*窪田 薫¹、酒井 恵祐²、大串 健一²、樋口 富彦³、白井 厚太朗³、南 雅代⁴ (1.海洋研究開発機構　海域地震火山部門、2.神戸大学、3.東京大学　大気海洋研究所、4.名古屋大学　宇宙地球環境研究所)

キーワード：放射性炭素、酸素同位体、水素同位体

To understand seawater properties, such as water mass structure and mixing, geochemical analyses are useful. However, geochemical datasets for seawater that fully cover coastal areas of Hokkaido, North Japan are lacking. Here we report comprehensive geochemical analyses of seawater (salinity, δ¹⁸O, δD, and Δ¹⁴C) collected in August–September 2021 from coastal areas of Hokkaido as well as the west coast of Tohoku (Northeast Japan). These datasets are expected to improve our understanding of seawater properties around Hokkaido, thereby contributing to oceanography, climatology, biogeochemical cycles, and fishery science.