Lu Xueqiang
Division of Earth and Environmental Science, Graduate School of Environmental Studies, Nagoya University, 1 Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan.
J Environ Radioact. 2004;73(2):169-81. doi: 10.1016/j.jenvrad.2003.08.009.
Considerable doubt surrounds the nature of processes by which 137Cs is deposited in marine sediments, leading to a situation where 137Cs geochronology cannot be always applied suitably. Based on extrapolation with Weibull distribution, the maximum concentration of 137Cs derived from asymptotic values for cumulative specific inventory was used to re-establish 137Cs geochronology, instead of original 137Cs profiles. Corresponding dating results for cores in Tokyo Bay and Ise Bay, Japan, by means of this new method, are in much closer agreement with those calculated from 210Pb method than the previous method.
关于137Cs沉积在海洋沉积物中的过程的性质存在相当大的疑问，这导致了137Cs地质年代学不能总是得到适当应用的情况。基于威布尔分布的外推法，使用从累积比活度的渐近值得出的137Cs最大浓度来重新建立137Cs地质年代学，而不是原来的137Cs剖面。通过这种新方法，日本东京湾和伊势湾岩芯的相应测年结果与用210Pb法计算的结果相比，比以前的方法更接近。
