| 胶州湾沉积物的放射性核素含量分布与沉积速率 |
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| 引用本文：刘广山,李冬梅,易勇,刘素美,白洁,张经.2008.胶州湾沉积物的放射性核素含量分布与沉积速率[J].地球学报,29(6):769-777. |
| DOI：10.3975/cagsb.2008.06.18 |
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| 基金项目:国家自然科学基金项目(编号:40036010) |
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| 中文摘要: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0.64～1.74 cm/a. |
| 中文关键词:胶州湾 沉积物 放射性核素 沉积速率 |
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| Radionuclide Distribution in Sediments and Sedimentary Rates in the Jiaozhou Bay |
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| Abstract:Rdionuclides in sediments of the Jiaozhou Bay and its surrounding area were measured using the HPGe γ spectrum method.238U,228Ra,228Th,226Ra,210Pb,40K and 137Cs were detected in sediment samples.The results show that the radionuclide 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. |
| keywords:Jiaozhou Bay sediments radionuclide sedimentary rate |
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