| 利用有孔虫壳体B/Ca比值再造古海水pH值及[CO3（2-）]的潜力 |
| |
| 引用本文： | 乔培军,王婷婷,翦知湣.利用有孔虫壳体B/Ca比值再造古海水pH值及[CO3（2-）]的潜力[J].地球科学进展,2012,27(6):686-693. |
| |
| 作者姓名： | 乔培军 王婷婷 翦知湣 |
| |
| 作者单位： | 同济大学海洋地质国家重点实验室,上海,200092 |
| |
| 基金项目： | 国家自然科学基金重点项目“南海晚新生代中层水和深层水的演变及其全球意义”，国家自然科学基金项目“低纬西太平洋末次盛冰期以来的气候环境变化及其全球影响”，国家高技术研究发展计划项目“大洋钻探站位调查关键技术研究” |
| |
| 摘 要： | 有孔虫壳体B/Ca比值是一个极具潜力并且受到广泛关注的古海洋学方法,适用于恢复古海水pH值及CO23-]。对于表层水,在一定条件下可以再造大气CO2浓度;对于深层水,可以指示洋流变化及水团变迁。且与硼同位素方法相比较,B/Ca比值分析更简易、稳定性更好,受溶解及沉积埋藏作用影响小,因而更适合于高分辨率的古海洋学分析。...
|
| 关 键 词： | 有孔虫壳体 B/Ca pH值 [CO32-] |
Potential of Foraminiferal B/Ca Ratios for Reconstructing Paleo-seawater pH and CO3^2- Concentrations |
| |
| Qiao Peijun,Wang Tingting,Jian Zhi.Potential of Foraminiferal B/Ca Ratios for Reconstructing Paleo-seawater pH and CO3^2- Concentrations[J].Advance in Earth Sciences,2012,27(6):686-693. |
| |
| Authors: | Qiao Peijun Wang Tingting Jian Zhi |
| |
| Institution: | State Key Laboratory of Marine Geology, Tongji University, Shanghai200092, China |
| |
| Abstract: | The analysis of foraminiferal B/Ca ratios is a greatly potential and widely concerned paleoceanographic method,which is applicable to the reconstruction of the past pH and CO32- concentrations of sea water,and under certain situations also can also be used to reflect the changes of the atmospheric CO2 concentration from surface water,and indicate changes of ocean current and water mass of deep water.Compared with the conventional method of boron isotopes,the B/Ca ratio method is relatively easier,more stable,and less affected less by dissolution and post-deposition alternations.As a result,it is relatively suitable for high-resolution paleoceanographic studies.However,this method is comparably new.The foraminiferal biological processes to absorb boron element is still not very clear.Moreover,the mechanisms using B/Ca ratio to reconstruct pH and CO32- concentrations is not well accepted.As the method is constructed on the basis of empirical function,establishment of its theoretical basis will be the future and important development of this method. |
| |
| Keywords: | Foraminifera shell B/Ca ratio pH value CO3^2- concentration |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《地球科学进展》浏览原始摘要信息 |
| 点击此处可从《地球科学进展》下载免费的PDF全文 |
|
