A Study of Particulate Organic Carbon Export in the Yellow
Sea in Summer Based on 234Th:238U Disequilibrium
作者: 赵道辰 ：厦门大学环境与生态学院，厦门;
Abstract: 234Th was utilized as a tracer of particulate organic carbon (POC) fluxes from the euphotic zone to study biological pump process in the Yellow Sea in the summer of 2009. 234Th in the upper water column was determined by using a modified small-volume MnO2 co-precipitation technique, and its deficit with respect to 238U was found to be evident throughout the upper water column. The 234Th:238U disequilibrium in the upper waters and one-dimensional irreversible steady state model were used to calculate the POC export fluxes from the bottom of euphotic layer. The POC export flux varied from 12.7 ± 1.7 mmol C m−2·d−1 to 92.0 ± 21.0 mmol C m−2·d−1, with an average of 45.3 ± 41.5 mmol C m−2·d−1 (n = 3, ±1SD). The results will provide a better understanding of the role that the Yellow Sea plays in the global carbon cycle.
文章引用: 赵道辰 (2013) 夏季黄海颗粒有机碳的输出通量——基于234Th:238U 不平衡方法的研究 。 气候变化研究快报， 2， 159-164. doi: 10.12677/CCRL.2013.24027
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