Contents

1, Radioactive fallout in Japan since 1957	------------------------------------ 1
2, Aerosols	------------------------------------ 25
3, Radioactive gases observed at Tsukuba, Japan	------------------------------------ 38
4, Tritium in the environment	------------------------------------ 49
5, Temporal variation of ^137Cs and ^239+240Pu in the Japan Sea	------------------------------------ 51
6, Artifical radionuclides in the Pacific Ocean	------------------------------------ 63
7, Artifical radionuclides in major rivers in Japan	----------------------------------- 108
8, Plutonium in fallout and seawater	----------------------------------- 109
9, Atmospheric transport originating from Chernobyl accident in 1986 and the Tokai waste treatment plant in 1997	----------------------------------- 120
Publications list 1954-2003	----------------------------------- 133
Publications list ( in Japanses) 1954-1976	----------------------------------- 145
History of the studies at Meteorological Res. Inst.	----------------------------------- 149
Publications appeared in “Artifical radionuclides in the Environment 1954-2001”	----------------------------------- 151
Publications appeared in “Artifical radionuclides in the Environment 1954-1999”	----------------------------------- 153

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