| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10730598 | Applied Radiation and Isotopes | 2005 | 6 Pages |
Abstract
14C in rice grains is a useful tracer of atmospheric 14C(CO2). 14C measurement in rice grains for 17 years during 1982-1999 reveals the following. There is negative correlation between Î14C and the population densities of localities in Japan. Under-populated areas in the northern area of Japan and Okinawa remained clean in the 1990s. The 14C(CO2) decline rates at those areas are near to that of Shauinsland. A latitudinal effect due to Chinese nuclear tests is observed in 1982. Small Seuss effects is observed at the middle latitudes in East Asia after 1995.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Radiation
![Atmospheric [14C]CO2 variations in Japan during 1982-1999 based on 14C measurements of rice grains](/preview/png/10730598.png "First Page Preview: Atmospheric [14C]CO2 variations in Japan during 1982-1999 based on 14C measurements of rice grains")
Authors
Setsuko Shibata, Eiko Kawano, Takeshige Nakabayashi,