摘要
报道了南极长城站地区湖泊沉积柱样中^（２１０）Ｐｂ比活度的测量结果：附加^（２１０）Ｐｂ比活度随深度的增加呈典型的指数衰减分布，指出了^（２１０）Ｐｂ测年法在本区应用的可行性和该湖泊的沉积速率（（０．０７２±０．０１８）ｃｍ·ａ^（－１）），并讨论了大气核试验对南极环境中２１０Ｐｂ沉降量的影响。
The results of 210Pb measurements in the lake sediment core form Antarcica are reported: the 210Pb relative specific activity was found to decrease exponentially with the depth in the study area,the sedimentation rate of the lake is(0.072±0.018) cm·a-1.This paper thinks that 210Pb method is applicable to Antarctic lake sediment,during the 1960's the atmospheric nuclear tests have an effect on the rate of 210Pb deposition in Antarctica.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
1995年第1期140-142,共3页
Journal of Beijing Normal University(Natural Science)
基金
国家"八五"科技攻关项目
关键词
南极
长城站地区
湖泊
沉积岩芯
铅210
比活度
Antarctica
Great Wall Station
lake sediment core
￣(210)Pb
sedimentation rate
