放射性碳年代测定
珊瑚
海洋学
滨珊瑚
季风
地质学
海面温度
海水
环境科学
加速器质谱
句号(音乐)
古生物学
声学
物理
作者
Harsh Raj,Ravi Bhushan,Upasana S. Banerji,Partha Sarathi Jena,Ankur J. Dabhi
标识
DOI:10.1016/j.jenvrad.2022.107021
摘要
Corals provide high-resolution radiocarbon record of the surface ocean. These high-resolution records can provide understanding of the surface ocean conditions and processes regulating these conditions. A Porites coral from the Andaman Sea was investigated for its high-resolution radiocarbon record between 2007 and 2014. The radiocarbon measurement of the coral shows a post-bomb period decline trend (2.7‰ yr−1) along with seasonal variations. A positive correlation is observed between the seasonal radiocarbon changes and the stable oxygen isotope values of the coral. The coral registers the seasonal changes in mixed layer depth and sea surface temperature between the monsoon and non-monsoon periods. Recent radiocarbon values of the Andaman Sea surface water have been found to be higher compared to the contemporary atmospheric radiocarbon values.
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