戈壁汇水区测年与沉积速率研究  

Study on Chronology Establishment and Sedimentation Rate in Gobi Catchments

作　　者：雷震[1] 金玉仁[1] 程建平[2] 王宏乐[3] 杨晓燕[1] 

机构地区：[1]中国人民解放军63653部队 [2]清华大学工程物理系 [3]中国人民解放军69046部队

出　　处：《原子能科学技术》2007年第5期614-617,共4页Atomic Energy Science and Technology

摘　　要：运用^(137)Cs法和^(210)Pb法对核试验场区汇水区沉积物的沉积速率进行估算,对沉积物的蓄积峰进行年代判定。用分衰减段方法计算^(210)Pb分布异常情况下沉积物的沉积速率,得到的沉积速率与^(137)cs法获得的沉积速率基本符合。结合应用^(137)Cs法和^(210)Pb法,可得到汇水区的沉积速率和沉积层的年代。^137Cs method and ^210Pb method are applied to estimate the sedimentation rate in catchments of nuclear test region, and a confident chronology is established in each sediment peak. With the situation of abnormal distribution of ^210Pb, part decline segment method is used in calculation of sedimentation rate, the sedimentation rate using part segment method is mainly in coincidence with the sedimentation rate using ^137Cs method. It can get the sedimentation rate of the catchments and the age of sediment layer by using of both ^137Cs method and ^210Pb method.

关 键 词：^137Cs^210Pb 沉积速率 

分 类 号：TL751[核科学技术—辐射防护及环境保护]