摘要
用HPGeγ谱方法测定了胶州湾表层沉积物、沉积物岩心、潮间带沉积物和周围陆地沉积物的放射性核素238U、228Ra、228Th、226Ra、210Pb、40K和137Cs。笔者对胶州湾沉积物、潮间带沉积物和陆地表层沉积物的放射性核素分布进行研究,结果得出,湾东部沉积物和东岸陆地沉积物具有较高的放射性核素含量。对沉积物岩心放射性核素分布的成因进行了分析,并用210Pbex和137Cs方法估算了沉积速率,给出的胶州湾的沉积速率为0.64～1.74cm/a。
Rdionuclides in sediments of the Jiaozhou Bay and its surrounding area were measured using the HPGe γ spectrum method. 23sU, 22SRa, 22STh, 226Ra, 210pb, 40K and 137Cs were detected in sediment samples. The resuhs show that the radionuelide contents of the sediments collected from the east bay are relatively high. The vertical distribution of nuclides in the sediment cores was analyzed, and the sedimentary rates were evaluated by 210pbex and 137Cs methods, yielding the value of 0.64 - 1.74 cm/a.
出处
《地球学报》
EI
CAS
CSCD
北大核心
2008年第6期769-777,共9页
Acta Geoscientica Sinica
基金
国家自然科学基金项目(编号:40036010)资助
关键词
胶州湾
沉积物
放射性核素
沉积速率
Jiaozhou Bay
sediments
radionuelide
sedimentary rate
