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- W2779767515 abstract "原地生宇宙成因核素暴露测年技术是20世纪80年代兴起的新的测年技术手段，目前该方法已广泛应用于地学多领域的暴露年代以及长尺度侵蚀速率的定量测定，定量研究暴露测年计算公式中不同参数误差可能引起的年代结果误差将有助于对该技术进一步的理解和更好的利用。因此，本文基于全球不同区域岩石样品的测年数据，分别对公式中宇生核素的浓度、生成速率、侵蚀速率、宇宙射线的衰减路径长度以及样品的密度等进行误差分析。研究结果表明：(1) 宇生核素生成速率和浓度的误差与所引起的年代结果误差成等比例关系；(2) 样品密度所引起的误差最大可达16%；(3) 宇宙射线衰减路径长度所引起的年代误差最大可达31%；(4) 侵蚀速率所造成的年代结果误差与样品暴露的时间尺度有关，最大可超过100%。该研究可为宇生核素暴露测年技术在地貌学中更好的应用提供参考数据。 In situ cosmogenic exposure dating method was developed in the 1980s. At present, the method has been widely used in many fields of geological hazard research and long-time erosion rate. The quantitative study of the age error made by the error of different parameters in the calculation formula, will contribute to the further understanding and better utilization of the technology. Thus, this article is based on the dating data of rock samples in different regions around the world to analyze error of the concentration, generation rate, erosion rate about in situ terrestrial cosmogenic nuclides, attenuation path length of cosmic ray and the density of the sample in the calculation formula. The results show that: (1) Errors of the concentration and the generation rate about in situ terrestrial cosmogenic nuclides are proportional to the age error. (2) The maximum time error caused by sample density can be up to 16%. (3) The error of absorption mean free path is up to 31%. (4) The result of the erosion rate is related to the exposure time scale of the sample, which can be more than 100 %. This study can be used to provide reference data for the better application of in situ cosmogenic exposure dating method in geomorphology." @default.
- W2779767515 created "2018-01-05" @default.
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- W2779767515 date "2017-01-01" @default.
- W2779767515 modified "2023-09-24" @default.
- W2779767515 title "Error Analysis of Influence Factors of In Situ Cosmogenic Exposure Dating Method" @default.
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- W2779767515 doi "https://doi.org/10.12677/ag.2017.76082" @default.
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