| OSL测年中CGC法求D_e均值的计算方法之比较分析 |
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| 引用本文： | 刘瑞元,赖忠平.OSL测年中CGC法求D_e均值的计算方法之比较分析[J].盐湖研究,2012,20(4):21-24. |
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| 作者姓名： | 刘瑞元 赖忠平 |
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| 作者单位： | 1. 中国科学院青海盐湖研究所,青海西宁810008;中国科学院大学,北京100049
2. 中国科学院青海盐湖研究所,青海西宁810008;中国科学院寒区旱区环境与工程研究所,甘肃兰州730000 |
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| 摘 要： | 光释光测年中等效剂量是计算样品埋藏年龄的一个重要参数,一般通过求多个实验测量值的均值得出。标准生长曲线法是求等效剂量的一种常用且有效的方法,分析讨论了此法计算的等效剂量存在小幅度的系统性的偏大及其原因,提出了改进的方法;展望了CGC法求De均值更优的估计——极大似然估计。
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| 关 键 词： | 标准生长曲线法 等效剂量 均值 |
The Contrast of Different Calculation Methods for Seeking De Mean by CGC of OSL Dating |
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| LIU Rui-yuan,LAI Zhong-ping.The Contrast of Different Calculation Methods for Seeking De Mean by CGC of OSL Dating[J].Journal of Salt Lake Research,2012,20(4):21-24. |
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| Authors: | LIU Rui-yuan LAI Zhong-ping |
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| Institution: | 1,3(1.Qinghai Institnte of Salt Lakes,Chinese Academy of Sciences,Xining,810008,China; 2.University of Chinese Academy of Sciences,Beijing,100049,China; 3.Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences,Lanzhou,730000,China) |
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| Abstract: | Equivalent dose is one of the important parameters in calculating the burial age of the sample on the OSL dating.Generally it's taken more than one experimental values to seek the mean as the sample's equivalent dose.Common growth curve method(CGC) is valid and common to solve the equivalent dose,this study discovered that there is a small systematic deviation in nowadays'CGC and discussed its reason,and the improved methods were proposed.A prospect of more superior method to solve the equivalent dose,CGC method-maximum likehood estimation,were given. |
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| Keywords: | Standard growth curve Equivalent dose Mean value |
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