Vertical distributions of 226Ra, 228Ra, and 137Cs activities in the southwestern part of the Sea of OkhotskM. Inoue, K. Yoshida, M. Minakawa, H. Kofuji, S. Nagao, Y. Hamajima and M. YamamotoEPJ Web of Conferences, 24 (2012) 04001DOI: https://doi.org/10.1051/epjconf/20122404001