| 湖泊沉积物14C年龄硬水效应校正初探——以青海湖为例 |
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| 引用本文： | 汪勇,沈吉,吴健,刘兴起,张恩楼,刘恩峰. 湖泊沉积物14C年龄硬水效应校正初探——以青海湖为例[J]. 湖泊科学, 2007, 19(5): 504-508 |
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| 作者姓名： | 汪勇 沈吉 吴健 刘兴起 张恩楼 刘恩峰 |
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| 作者单位： | 1. 中国科学院南京地理与湖泊研究所,南京,210008;中国科学院研究生院,北京,100049
2. 中国科学院南京地理与湖泊研究所,南京,210008 |
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| 基金项目： | 国家自然科学基金 , 国家自然科学基金 |
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| 摘 要： | 在深入探讨湖泊硬水效应成因和变化规律的基础上,借鉴海洋碳库效应校正方法,首次利用湖水和大气14C放射性比度之间关系的方法对青海湖沉积物14C年龄进行硬水效应校正,并重建了青海湖硬水效应在过去8 ka中的变化过程.笔者认为,青海湖表层沉积物有机质14C年龄不老于1549 aBP,青海湖硬水效应在7000-1000 aBP期间是逐渐增强的.
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| 关 键 词： | 硬水效应 14C年龄校正 湖泊沉积物 青海湖 湖泊沉积物 年龄 水效应 校正方法 青海湖 waters lake levels relationship ages lacustrine sediment correction effect Qinghai 逐渐增强 有机质 表层沉积物 变化过程 重建 湖沉积物 |
| 收稿时间： | 2006-09-05 |
| 修稿时间： | 2006-12-18 |
Hard-water effect correction of lacustrine sediment ages using the relationship between 14C levels in lake waters and in the atomosphere: the case of Lake Qinghai |
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| WANG Yong,SHEN Ji,WU Jian,LIU Xingqi,ZHANG Enlou and LIU Enfeng. Hard-water effect correction of lacustrine sediment ages using the relationship between 14C levels in lake waters and in the atomosphere: the case of Lake Qinghai[J]. Journal of Lake Science, 2007, 19(5): 504-508 |
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| Authors: | WANG Yong SHEN Ji WU Jian LIU Xingqi ZHANG Enlou LIU Enfeng |
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| Affiliation: | 1.Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P. R. China;2.Graduate School, Chinese Academy of Sciences, Beljing 100049, P. R China |
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| Abstract: | On the basis of analyzing the nature and feature of hard-water effect,the hard-water effect calibration of sediment ~(14)C ages of Lake Qinghai is carried out using the relationship between ~(14)C levels in lake waters and the at- mosphere,in the light of marine reservoir correction.The variation of the hard water effect in Lake Qinghai back to 8000 aBP is also reconstructed.It's concluded that ~(14)C ages of the surface sediment in Lake Qinghai is less than 1549 aBP and the hard-water effect of Lake Qinghai increased evidently during 7000-1000 aBP. |
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| Keywords: | Hard-water effect ^14C age correction lacustrine sediment Lake Qinghai |
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