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ETDEWEB   /       /    The Transport of Close-In Fallout Plutonium in the Northwest Pacific Ocean: Tracing the Water Mass Movement Using {sup 240}Pu/{sup 239}Pu Atom Ratio

The Transport of Close-In Fallout Plutonium in the Northwest Pacific Ocean: Tracing the Water Mass Movement Using {sup 240}Pu/{sup 239}Pu Atom Ratio

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Abstract

{sup 240}Pu/{sup 239}Pu atom ratios in seawater and surface sediment collected from the northwest (NW) Pacific Ocean from 1992 to 1997 were determined using ICP-sector field mass spectrometry (ICP-MS). In whole water columns, the atom ratios of {sup 240}Pu/{sup 239}Pu were higher than the global fallout ratio (0.18). It is noted that the atom ratios of {sup 240}Pu/2{sup 39}Pu in the seawater increase with depth. Such elevated {sup 240}Pu/{sup 239}Pu atom ratios indicate that the close-in fallout plutonium isotopes originating from the Pacific Proving Grounds (PPGs) due to the U.S. tests are prevailing in the seawater in the NW Pacific Ocean. However, the {sup 240}Pu/{sup 239}Pu atom ratios in the surface sediment from the NW Pacific Ocean varied with the sampling locations. As a consequence, this study will provide the information that the water mass along with the current plays a key role in driving the distribution of Pu and in transporting Pu from the PPGs to the far eastern marginal sea in the NW Pacific Ocean. (author)
Authors:
Lee, Sang-Han; [1]  Hong, Gi-Hoon; Suk, Moon-Sik; [2]  Gastaud, J.; [3]  La Rosa, J.; [4]  Kim, Chul-Soo; [5]  Wyse, E.; [6]  Povinec, P. P. [7] 
  1. Korea Research Institute of Standards and Science, Daejeon (Korea, Republic of)
  2. Korea Ocean Research and Development Institute, Seoul (Korea, Republic of)
  3. International Atomic Energy Agency, Marine Environment Laboratory (Monaco)
  4. National Institute of Standards and Technology, Ionizing Radiation Division, Gaithersburg, Maryland (United States)
  5. Environmental Laboratories, International Atomic Energy Agency, Seibersdorf (Austria)
  6. New Brunswick Laboratory Argonne, IL (United States)
  7. Comenius University, Faculty of Mathematics and Physics, Bratislava (Slovakia)
Publication Date:
Jul 15, 2013
Product Type:
Conference
Report Number:
IAEA-CN-186/152
Resource Relation:
Conference: International Symposium on Isotopes in Hydrology, Marine Ecosystems and Climate Change Studies, Monaco (Monaco), 27 Mar - 1 Apr 2011; Other Information: 2 figs., 25 refs.; Related Information: In: Isotopes in Hydrology, Marine Ecosystems and Climate Change Studies. Vol. I. Proceedings of an International Symposium| 547 p.
Subject:
58 GEOSCIENCES; DEPTH; DISTRIBUTION; ELECTRIC GROUNDS; GLOBAL FALLOUT; ICP MASS SPECTROSCOPY; LOCAL FALLOUT; PACIFIC OCEAN; PLUTONIUM; PLUTONIUM 239; PLUTONIUM 240; RADIONUCLIDE MIGRATION; SAMPLING; SEAWATER; SEDIMENTS; SURFACES
OSTI ID:
22122105
Research Organizations:
International Atomic Energy Agency, Department of Nuclear Sciences and Applications, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISSN 0074-1884; ISBN 978-92-0-135610-9; TRN: XA13R0862078216
Availability:
Also available on-line: http://www-pub.iaea.org/MTCD/publications/PDF/Pub1580_vol1_web.pdf; Enquiries should be addressed to IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books
Submitting Site:
INIS
Size:
page(s) 513-521
Announcement Date:
Aug 29, 2013

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Citation Formats

Lee, Sang-Han, Hong, Gi-Hoon, Suk, Moon-Sik, Gastaud, J., La Rosa, J., Kim, Chul-Soo, Wyse, E., and Povinec, P. P. The Transport of Close-In Fallout Plutonium in the Northwest Pacific Ocean: Tracing the Water Mass Movement Using {sup 240}Pu/{sup 239}Pu Atom Ratio. IAEA: N. p., 2013. Web.
Lee, Sang-Han, Hong, Gi-Hoon, Suk, Moon-Sik, Gastaud, J., La Rosa, J., Kim, Chul-Soo, Wyse, E., & Povinec, P. P. The Transport of Close-In Fallout Plutonium in the Northwest Pacific Ocean: Tracing the Water Mass Movement Using {sup 240}Pu/{sup 239}Pu Atom Ratio. IAEA.
Lee, Sang-Han, Hong, Gi-Hoon, Suk, Moon-Sik, Gastaud, J., La Rosa, J., Kim, Chul-Soo, Wyse, E., and Povinec, P. P. 2013. "The Transport of Close-In Fallout Plutonium in the Northwest Pacific Ocean: Tracing the Water Mass Movement Using {sup 240}Pu/{sup 239}Pu Atom Ratio." IAEA.
@misc{etde_22122105,
title = {The Transport of Close-In Fallout Plutonium in the Northwest Pacific Ocean: Tracing the Water Mass Movement Using {sup 240}Pu/{sup 239}Pu Atom Ratio}
 author = {Lee, Sang-Han, Hong, Gi-Hoon, Suk, Moon-Sik, Gastaud, J., La Rosa, J., Kim, Chul-Soo, Wyse, E., and Povinec, P. P.}
 abstractNote = {{sup 240}Pu/{sup 239}Pu atom ratios in seawater and surface sediment collected from the northwest (NW) Pacific Ocean from 1992 to 1997 were determined using ICP-sector field mass spectrometry (ICP-MS). In whole water columns, the atom ratios of {sup 240}Pu/{sup 239}Pu were higher than the global fallout ratio (0.18). It is noted that the atom ratios of {sup 240}Pu/2{sup 39}Pu in the seawater increase with depth. Such elevated {sup 240}Pu/{sup 239}Pu atom ratios indicate that the close-in fallout plutonium isotopes originating from the Pacific Proving Grounds (PPGs) due to the U.S. tests are prevailing in the seawater in the NW Pacific Ocean. However, the {sup 240}Pu/{sup 239}Pu atom ratios in the surface sediment from the NW Pacific Ocean varied with the sampling locations. As a consequence, this study will provide the information that the water mass along with the current plays a key role in driving the distribution of Pu and in transporting Pu from the PPGs to the far eastern marginal sea in the NW Pacific Ocean. (author)}
 place = {IAEA}
 year = {2013}
 month = {Jul}
 }