Abstract
The anthropogenic radionuclides, such as ''1''3''7Cs, ''9''0Sr, and some of the transuranic nuclides, are important tracers of transport and biogeochemical processes in the ocean. {sup 137}Cs, a major fission product present in a dissolved form in seawater, is a good tracer of oceanic circulation on a time scale of several decades. In the Pacific Ocean, 7 cruises were conducted and the 3-D distribution of {sup 137}Cs concentration in the 2000's was observed. Two types of ocean general circulation models were also used to conduct hindcasts of the {sup 137}Cs concentration. Both results allowed the drawing of a detailed picture of the {sup 137}Cs 3-D structure. The deposition of {sup 137}Cs mainly occurred in the northern subtropical gyre of the North Pacific Ocean and was later transported into the ocean interior, and a core structure of {sup 137}Cs was found along the Central Mode Water. After crossing the Equator, {sup 137}Cs spreads to the South Pacific through the Ekman transports at the surface. (author)
Aoyama, M.;
[1]
Fukasawa, M.;
Kawano, T.;
[2]
Hamajima, Y.;
[3]
Hirose, K.;
[4]
Nakano, H.;
[5]
Povinec, P. P.;
[6]
Sanchez-Cabeza, J. A.;
[7]
Tsumune, D.
[8]
- Geochemical Research Department, Meteorological Research Institute, Tsukuba (Japan)
- Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, Yokosuka (Japan)
- Low-Level Radioactivity Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Nomi (Japan)
- Faculty of Science and Technology, Sophia University, Chiyoda-ku (Japan)
- Oceanographic Research Department, Meteorological Research Institute, Tsukuba (Japan)
- Faculty of Mathematics, Physics and Informatics, Comenius University, Bratislava (Slovakia)
- Institut de Ciencia i Tecnologia Ambientals, and Departament de Fisica, Universitat Autonoma de Barcelona, Bellaterra (Spain)
- Environmental Research Laboratory, Central Research Institute of Electric Power Industry, Abiko (Japan)
Citation Formats
Aoyama, M., Fukasawa, M., Kawano, T., Hamajima, Y., Hirose, K., Nakano, H., Povinec, P. P., Sanchez-Cabeza, J. A., and Tsumune, D.
Inter and Intra Basin Scale Transport of {sup 137}Cs in the Pacific Ocean.
IAEA: N. p.,
2013.
Web.
Aoyama, M., Fukasawa, M., Kawano, T., Hamajima, Y., Hirose, K., Nakano, H., Povinec, P. P., Sanchez-Cabeza, J. A., & Tsumune, D.
Inter and Intra Basin Scale Transport of {sup 137}Cs in the Pacific Ocean.
IAEA.
Aoyama, M., Fukasawa, M., Kawano, T., Hamajima, Y., Hirose, K., Nakano, H., Povinec, P. P., Sanchez-Cabeza, J. A., and Tsumune, D.
2013.
"Inter and Intra Basin Scale Transport of {sup 137}Cs in the Pacific Ocean."
IAEA.
@misc{etde_22123133,
title = {Inter and Intra Basin Scale Transport of {sup 137}Cs in the Pacific Ocean}
author = {Aoyama, M., Fukasawa, M., Kawano, T., Hamajima, Y., Hirose, K., Nakano, H., Povinec, P. P., Sanchez-Cabeza, J. A., and Tsumune, D.}
abstractNote = {The anthropogenic radionuclides, such as ''1''3''7Cs, ''9''0Sr, and some of the transuranic nuclides, are important tracers of transport and biogeochemical processes in the ocean. {sup 137}Cs, a major fission product present in a dissolved form in seawater, is a good tracer of oceanic circulation on a time scale of several decades. In the Pacific Ocean, 7 cruises were conducted and the 3-D distribution of {sup 137}Cs concentration in the 2000's was observed. Two types of ocean general circulation models were also used to conduct hindcasts of the {sup 137}Cs concentration. Both results allowed the drawing of a detailed picture of the {sup 137}Cs 3-D structure. The deposition of {sup 137}Cs mainly occurred in the northern subtropical gyre of the North Pacific Ocean and was later transported into the ocean interior, and a core structure of {sup 137}Cs was found along the Central Mode Water. After crossing the Equator, {sup 137}Cs spreads to the South Pacific through the Ekman transports at the surface. (author)}
place = {IAEA}
year = {2013}
month = {Jul}
}
title = {Inter and Intra Basin Scale Transport of {sup 137}Cs in the Pacific Ocean}
author = {Aoyama, M., Fukasawa, M., Kawano, T., Hamajima, Y., Hirose, K., Nakano, H., Povinec, P. P., Sanchez-Cabeza, J. A., and Tsumune, D.}
abstractNote = {The anthropogenic radionuclides, such as ''1''3''7Cs, ''9''0Sr, and some of the transuranic nuclides, are important tracers of transport and biogeochemical processes in the ocean. {sup 137}Cs, a major fission product present in a dissolved form in seawater, is a good tracer of oceanic circulation on a time scale of several decades. In the Pacific Ocean, 7 cruises were conducted and the 3-D distribution of {sup 137}Cs concentration in the 2000's was observed. Two types of ocean general circulation models were also used to conduct hindcasts of the {sup 137}Cs concentration. Both results allowed the drawing of a detailed picture of the {sup 137}Cs 3-D structure. The deposition of {sup 137}Cs mainly occurred in the northern subtropical gyre of the North Pacific Ocean and was later transported into the ocean interior, and a core structure of {sup 137}Cs was found along the Central Mode Water. After crossing the Equator, {sup 137}Cs spreads to the South Pacific through the Ekman transports at the surface. (author)}
place = {IAEA}
year = {2013}
month = {Jul}
}