论文信息 - The240Pu239Pu ratio, a potential geochronometer

The240Pu239Pu ratio, a potential geochronometer

Abstract The Arctic and Antarctic ice sheets maintain records of the atmospheric fallout in their datable strata. The 240Pu239Pu ratios in these polar reservoirs uniquely distinguish particulate fallout from the pre-moratorium nuclear atmospheric weapons tests, dominated by the U.S., and the post-moratorium atmospheric weapons tests, dominated by the U.S.S.R. Thus, they offer the possibility of use as a geochronological tool for some marine, glacial, lacustrine and soil systems.

[1] V. T. Bowen,et al. Fallout radionuclides in the Pacific Ocean: Vertical and horizontal distributions, largely from GEOSECS stations , 1980 .

[2] Michael M. Herron,et al. Climatic signal of ice melt features in southern Greenland , 1981, Nature.

[3] E. Goldberg,et al. 241Pu/239+240Pu ratios in polar glaciers , 1981 .

[4] Glenn T. Seaborg,et al. Heavy Isotope Abundances in Mike Thermonuclear Device , 1960 .

[5] A. Moghissi,et al. Three decades on nuclear testing. , 1977, Health physics.

[6] M. Herron,et al. Transuranic depositional history in South Greenland firn layers , 1977, Nature.

[7] M. Herron,et al. Depositional history of artificial radionuclides in the Ross Ice Shelf, Antarctica , 1979 .

[8] M. Herron,et al. Characterization of radioactive fallout from pre- and post-moratorium tests to polar ice caps , 1982, Nature.

[9] R. Risebrough,et al. Deposition and accumulation of plutonium isotopes in Antarctica , 1979, Nature.