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厦门地区7Be和210Pb的大气沉降通量
Atmospheric Depositional Fluxes of 7Be and 210Pb at Xiamen
【摘要】 7Be和210Pb是大气中天然存在的放射性核素.本文测定了2001年8月至2002年8月间厦门地区7Be和210Pb大气沉降通量,平均值分别为1.90和0.41Bqm-2d-1.对7Be和210Pb的沉降特征及其影响因素进行了探讨,表明降雨是影响沉降通量的主要因素,两个核素的沉降通量之间存在较好线性相关性.
【Abstract】 7Be and 210Pb are two natural radionuclides in the atmosphere. This paper studied the total atmospheric depositional fluxes of 7Be and 210Pb from Aug 2001 to Aug 2002. Their average fluxes were 1.90 and 0.41Bq m2d-1 respectively. Characters of deposition and influence factors were discussed. The results show that the precipitation is the main factor controlling the total depositional fluxes. A correlation equation between the fluxes of 7Be and 210Pb was presented.
【基金】 国家自然科学基金(40076024,40036010)资助
- 【文献出处】 厦门大学学报(自然科学版) ,Journal of Xiamen University(Natural Science) , 编辑部邮箱 ,2003年03期
- 【分类号】P734
- 【被引频次】43
- 【下载频次】282