Intra- and inter-seasonal variations in the hydrological characteristics and nutrient conditions in the southwestern Yellow Sea during spring to summer
Intra- and inter-seasonal variations in the hydrological characteristics and nutrient conditions in the southwestern Yellow Sea during spring to summer
复制标题
西南黄海春夏季水文特征和营养状况的季节内和季节间变化
DOI：
10.1016/j.marpolbul.2020.111139
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发表时间：
2020
影响因子：
5.8
通讯作者：
Qingzhen Yao
中科院分区：
文献类型：
--
作者：
Junjie Wang;Zhigang Yu;Qinsheng Wei;Fuxia Yang;Mingfan Dong;D;an Li;Zhimei Gao;Qingzhen Yao
基于2017年4 - 9月黄海西南部海域的实地调查，耦合分析了该海域水文特征和营养盐状况的时空变化，探讨了黄海冷水团前部上升流的季节内变化及其对营养盐输送的影响。从北到南，近岸海域受低盐度高营养盐的鲁北沿岸流、苏北沿岸流和长江冲淡水的控制，东北部海域受低温高盐度高营养盐的长江冲淡水的控制。在YSCWM周围形成了温度、盐度和营养盐锋。4 ~ 9月，溶解无机氮（0.29×103 ~ 7.77×103μmol·m-2d-1）、磷酸盐（0.02×103 ~ 0.27× 103 μ mol·m-2d-1）和硅酸盐（0.98×103 ~ 8.75×103μmol·m-2d-1）的上升通量变化趋势相似。上涌的营养盐可能有助于春夏季当地绿色潮的发展和浮游植物的生长。
Based on field survey in the southwestern Yellow Sea (SWYS) during April–September 2017, the spatiotemporal variations in the hydrological characteristics and nutrient conditions were coupled and analyzed; the intra-seasonal variations in the upwelling in the front of the Yellow Sea Cold Water Mass (YSCWM) and impacts on nutrient transport were explored. The coastal area was controlled by the low-salinity high-nutrient Lubei Coastal Current, Subei Coastal Current, and Yangtze River Diluted Water from north to south; at bottom, the northeastern SWYS was controlled by the low-temperature high-salinity high-nutrient YSCWM. Temperature, salinity and nutrient fronts formed around YSCWM. The upwelling velocity in the front increased during April to late June and decreased in early September; the upwelled fluxes of dissolved inorganic nitrogen (0.29×103-7.77×103μmol·m-2d-1), phosphate (0.02×103-0.27×103μmol·m-2d-1) and silicate (0.98×103-8.75×103μmol·m-2d-1) showed similar variations during April–September. The upwelled nutrients could potentially contribute to local green tide development and phytoplankton growth during spring–summer.