2017/12/01 · Vertical distribution of 236U in the North Pacific Ocean. PubMed Eigl, R; Steier, P; Sakata, K; Sakaguchi, A 2017-04-01 The first extensive study on 236 U in the North Pacific Ocean has been conducted. The vertical distribution of 236 U/ 238 U isotopic ratios and the 236 U concentrations were analysed on seven depth profiles, and large variations with depth were found.