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Vertical profiles of Ra and Ra activities in the Sea of Japan and their implications on water circulation.
- Source :
-
Journal of Radioanalytical & Nuclear Chemistry . Feb2015, Vol. 303 Issue 2, p1309-1312. 4p. - Publication Year :
- 2015
-
Abstract
- We analyzed a total of 25 seawater samples collected from 2 columns within the Sea of Japan for Ra (half life 1,600 years) and Ra (half life 5.75 years) by employing low-background γ-spectrometry. The Ra activity level in the deep proper water (DPW) (~0.13 mBq/L) was found to be higher than that of deep waters from the Pacific and Atlantic Oceans (<0.1 mBq/L), indicating its continuous delivery to the DPW by active water circulation before complete radioactive decay. Using a steady state box model of Ra and Ra, the turn-over time in the DPW was calculated to be ~80 years. [ABSTRACT FROM AUTHOR]
- Subjects :
- *WATER chemistry
*WATER depth
*RADIOACTIVE decay
Subjects
Details
- Language :
- English
- ISSN :
- 02365731
- Volume :
- 303
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Radioanalytical & Nuclear Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 100489988
- Full Text :
- https://doi.org/10.1007/s10967-014-3492-4