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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。但是,由于该分析方法较新,与之相关的有孔虫吸收B元素的生物过程不是很清楚,采用B/Ca比值恢复pH值及[CO32-]的机制也不是很了解,方法的建立主要基于经验公式基础之上,因而为该方法寻找理论基础是今后研究的一个重要方向。
The B / Ca ratio of the foraminifera shell is a potential paleoceanographic method that has received extensive attention and is suitable for recovering the pH of ancient seawater and [CO23-]. For surface water, atmosphere CO2 can be reconstituted under certain conditions; for deep water, it can indicate changes in ocean currents and water masses. Compared with the boron isotope method, B / Ca ratio analysis is more simple, better stability, less affected by dissolution and sedimentary burial, and is therefore more suitable for high-resolution paleoceanographic analysis. However, due to the newer analytical methods, the biological processes involved in the absorption of element B by foraminifera are not well understood and the mechanisms by which the B / Ca ratio is used to restore pH and [CO32-] are poorly understood. Based on the empirical formula, therefore finding a theoretical basis for the method is an important direction for future research.