@article{oai:repo.qst.go.jp:00043940,
 author = {Momoshima, Noriyuki and Sayad, M and Yamada, Masatoshi and Takamura, M and Kawamura, H. and 百島 則幸 and 山田 正俊},
 issue = {3},
 journal = {Journal of Radioanalytical and Nuclear Chemistry},
 month = {Dec},
 note = {Global fallout levels of 99Tc and 137Cs of surface seawater in the Pacific Ocean were measured. The 99Tc concentrations ranged from 0.62 to 3.33 mBq.m-3 and 5 of 6 samples showed less than 1 mBq.m-3 except one sample taken in the Great Barrier Reef, Australia. The 137Cs concentrations ranged from 2.13 to 3.14 Bq.m-3, showing a gradual decrease in the North Pacific toward the equator and a constant level in the
South Pacific. The 99Tc/137Cs activity ratios ranged from 2.5.10-4 to 2.9.10-4, which is very close to that calculated theoretically from the fission yield},
 pages = {455--460},
 title = {Global fallout levels of 99Tc and activity ratio of 99Tc/137Cs in the Pacific Ocean},
 volume = {266},
 year = {2005}
}