Koki Maruyama
Central Research Institute of Electric Power Industry
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Publication
Featured researches published by Koki Maruyama.
Journal of Radioanalytical and Nuclear Chemistry | 2004
Daisuke Tsumune; Michio Aoyama; Katsumi Hirose; Koki Maruyama; Norikazu Nakashiki
The concentrations of three artificial radionuclides (90Sr, 137Cs and 239+240Pu) introduced into seawaters from global fallout were simulated from 1957 to 1994 by using an ocean general circulation model. The distributions of the calculated 137Cs and 90Sr concentrations were in good agreement with the observed concentrations. The vertical distribution of the calculated 239+240Pu concentration in the South Pacific also agreed with the observed data. However, the calculated 239+240Pu concentrations in the North Pacific water columns were significantly underestimated in comparison with the observed data, which strongly suggests the presence of additional sources of plutonium input to the North Pacific.
Hydrological Processes | 2011
Kenichi Tatsumi; Yosuke Yamashiki; Roberto Valmir Da Silva; Kaoru Takara; Yuzuru Matsuoka; Kiyoshi Takahashi; Koki Maruyama; Naoko Kawahara
Archive | 2005
Yoshikatsu Yoshida; Koki Maruyama; Junichi Tsutsui; Norikazu Nakashiki; Frank O. Bryan; Maurice L. Blackmon; B. A. Boville; Richard D. Smith
Climate Dynamics | 2006
Junichi Tsutsui; Yoshikatsu Yoshida; Dong-Hoon Kim; Hideyuki Kitabata; Keiichi Nishizawa; Norikazu Nakashiki; Koki Maruyama
Geophysical Research Letters | 2005
Dong-Hoon Kim; Norikazu Nakashiki; Yoshikatsu Yoshida; Koki Maruyama; Frank O. Bryan
Ocean Modelling | 2006
Norikazu Nakashiki; Dong-Hoon Kim; Frank O. Bryan; Yoshikatsu Yoshida; Daisuke Tsumune; Koki Maruyama; Hideyuki Kitabata
Sola | 2006
Hideyuki Kitabata; Keiichi Nishizawa; Yoshikatsu Yoshida; Koki Maruyama
Proceedings of the Symposium on Global Environment | 2001
Daisuke Tsumune; Michio Aoyama; Katsumi Hirose; Jong Hwan Yoon; Cheol-Ho Kim; Koki Maruyama; Norikazu Nakashiki; Fukiko Taguchi
Geophysical Research Letters | 2005
Dong-Hoon Kim; Norikazu Nakashiki; Yoshikatsu Yoshida; Koki Maruyama; Frank O. Bryan
Asia-pacific Journal of Atmospheric Sciences | 2005
Dong-Hoon Kim; Norikazu Nakashiki; Daisuke Tsumune; Yoshikatsu Yoshida; Koki Maruyama; Frank O. Bryan
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