Michio Aoyama
Complutense University of Madrid
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Publication
Featured researches published by Michio Aoyama.
Fukushima Accident#R##N#Radioactivity Impact on the Environment | 2013
Pavel P. Povinec; Katsumi Hirose; Michio Aoyama
In the pre-Fukushima era, the greatest source of anthropogenic radionuclides in the global environment was coming from atmospheric nuclear explosions conducted during the period of 1945–1980. The nuclear bomb-derived radionuclides were primarily injected into the upper atmosphere, transported according to air motion, and, finally, deposited on the land and ocean surface. The Chernobyl accident in 1986, being another marked source of anthropogenic radionuclides in the environment, contaminated wide areas of Russia, Ukraine and European countries. The anthropogenic radionuclides released in the environment were transported into the ocean as a major sink. The radionuclides in the ocean move according to the physical and biogeochemical processes.
Fukushima Accident#R##N#Radioactivity Impact on the Environment | 2013
Pavel P. Povinec; Katsumi Hirose; Michio Aoyama
Radiation doses to the Japanese population from inhalation of contaminated air, external irradiation, terrestrial and marine food contamination are estimated and compared with other sources of anthropogenic (global fallout, Chernobyl accident), natural (radionuclides in food, cosmic radiation) and medical applications (X-ray tests, CT-tests, etc.) of ionizing radiation. The estimated doses from inhalation, ingestion of terrestrial and marine food, and radiation exposure from radioactive clouds and deposited radionuclides were generally below the levels which could cause health damage of the Japanese population, as well as of the world population. The estimated total radiation doses to fish and shellfish in coastal waters during the largest radionuclide releases were by a factor of 10 lower than the baseline safe level postulated for the marine organisms, therefore no harmful effects are expected for the marine ecosystem as well.
Progress in Oceanography | 2011
Michio Aoyama; Masao Fukasawa; Katsumi Hirose; Yasunori Hamajima; Takeshi Kawano; Pavel P. Povinec; Joan-Albert Sanchez-Cabeza
Progress in Oceanography | 2011
Pavel P. Povinec; Michio Aoyama; Masao Fukasawa; Katsumi Hirose; Kazuhisa Komura; Joan-Albert Sanchez-Cabeza; J. Gastaud; M. Ješkovský; I. Levy; I. Sýkora
Progress in Oceanography | 2011
J.A. Sanchez-Cabeza; I. Levy; J. Gastaud; M. Eriksson; I. Osvath; Michio Aoyama; Pavel P. Povinec; Kazuhisa Komura
Progress in Oceanography | 2011
Michio Aoyama; Pavel P. Povinec; Joan-Albert Sanchez-Cabeza
International Symposium on Isotopes in Hydrology, Marine Ecosystems, and Climate Changes Studies | 2013
Katsumi Hirose; Michio Aoyama; J. Gastaud; Masao Fukasawa; C.-S Kim; I. Levy; Pavel P. Povinec; Per Roos; Joan-Albert Sanchez-Cabeza; S.A. Yim
Fukushima Accident#R##N#Radioactivity Impact on the Environment | 2013
Pavel P. Povinec; Katsumi Hirose; Michio Aoyama
Archive | 2009
Yasuhito Igarashi; Yayoi Inomata; Hiroshi Takahashi; Yoshihiro Shinoda; Taichu Y. Tanaka; Michio Aoyama; Masaru Chiba
Abstracts of Annual Meeting of the Geochemical Society of Japan | 2006
Teruyuki Honda; Akihiro Kitahara; Katsumi Hirose; Yasuhito Igarasi; Michio Aoyama