Spatial and temporal variability of colored dissolved organic matter absorption properties in the Taiwan Strait
Spatial and temporal variability of colored dissolved organic matter absorption properties in the Taiwan Strait
复制标题
台湾海峡有色溶解有机物吸收特性的时空变化
DOI：
10.1007/s13131-012-0240-x
复制
发表时间：
2012-10
影响因子：
1.4
通讯作者：
Ji Weidong
中科院分区：
文献类型：
--
作者：
Guo Weidong;Hu Minghui;Lin Cai;Ji Weidong
研究了台湾海峡夏季（2006年7月~ 8月）和冬季（2006年12月~ 2007年1月）彩色溶解有机质（CDOM）吸收特性的时空变化规律。CDOM在280 nm处的吸收系数（a280）从近岸到近海呈下降趋势，而在275 ~ 295 nm处的光谱斜率系数（s275 ~ 295）呈上升趋势，表明CDOM的芳香性和分子量下降。冬季平均值280（1.47±0.50 m−1）显著高于夏季（1.10±0.41 m−1），冬季平均值275 ~ 295（26.7±5.2µm−1）显著低于夏季（30.6±5.5µm−1），表明台湾海峡CDOM丰度和性质具有明显的季节变化。三端元保守混合模式显示，来自西海岸几条河流的局地CDOM输入很小（<5%）。而CDOM在台湾海峡的分布主要受水团运动控制[冬季受浙民沿岸流（ZCC）和黑潮支流（KBC）控制，夏季受南海水（SCSW）控制]。生物活性也是影响夏季近海海域CDOM分布的重要因素。
Spatial and temporal variability of the absorption properties of colored dissolved organic matter (CDOM) in the Taiwan Strait was investigated in summer (July to August of 2006) and winter (from December 2006 to January of 2007) seasons. The CDOM absorption coefficient at 280 nm (a280) showed a decreasing trend from nearshore to offshore areas while the spectral slope coefficient parameter calculated between wavelengths 275–295 nm (S275–295) showed an increase, indicative of decreasing aromaticity and molecular weight of the CDOM. The averagea280in winter (1.47±0.50 m−1) was significantly higher than in summer (1.10±0.41 m−1), while the averageS275–295in winter (26.7±5.2 µm−1) was significantly lower than in summer (30.6±5.5 µm−1), demonstrating clear seasonal variation in CDOM abundance and properties in the Taiwan Strait. A three-endmember conservative mixing model showed that local terrestrial CDOM inputs from several rivers along the western coast were small (<5%). However, the distribution of CDOM in the Taiwan Strait is mainly controlled by water mass movement [i.e., the Zhe-min Coastal Current (ZCC) and the Kuroshio Branch Current (KBC) in winter and the South China Sea Water (SCSW) in summer]. Biological activity was also an important factor affecting the distribution of CDOM in the offshore region in summer months.
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DOI：
10.1016/b978-0-12-323841-2.x5000-3
发表时间：
2002
期刊：
--
影响因子：
--
作者：
Dennis A. Hansell;C. Carlson
通讯作者：
Dennis A. Hansell;C. Carlson
DOI：
--
发表时间：
1997
期刊：
--
影响因子：
--
作者：
E. Croddy
通讯作者：
E. Croddy
影响因子：
3
作者：
E. Rochelle-Newall;T. Fisher
通讯作者：
E. Rochelle-Newall;T. Fisher
影响因子：
3
作者：
Kowalczuk, Piotr;Durako, Michael J.;Gonsior, Michael
通讯作者：
Gonsior, Michael
影响因子：
4
作者：
Hong, Huasheng;Yang, Liyang;Yu, Xiangxiang
通讯作者：
Yu, Xiangxiang