春季东海营养盐跨陆架输运通量的初步估算

发布时间：2018-08-19 12:48

【摘要】：利用2011年5月的调查资料,分析了春季东海营养盐分布特征。受长江冲淡水影响,表层长江口附近营养盐浓度较高;外海受黑潮表层水的影响营养盐浓度较低。计算并分析了跨200 m等深线的营养盐输运通量,结果表明黑潮在台湾东北部和九州岛西南部入侵陆架并将营养盐输运到陆架上,中段(26°N~29°N)则是营养盐向外输运。春季黑潮跨过200 m等深线向东海陆架的体积输运净通量为0.44 Sv,DIN、PO_4-P、Si O_3-Si通量分别为8.93 kmol/s、0.46 kmol/s、8.22 kmol/s。春季通过台湾海峡的营养盐DIN、PO_4-P、Si O_3-Si通量分别为6.65 kmol/s、0.41 kmol/s、6.52 kmol/s。表明春季台湾暖流对东海陆架海域营养盐的贡献与黑潮的贡献相当。
[Abstract]:Based on the investigation data of May 2011, the distribution characteristics of nutrients in the East China Sea in spring were analyzed. The nutrient concentration near the Changjiang Estuary is higher than that in the offshore sea affected by the Kuroshio surface water. The nutrient transport flux across the 200 m isobath is calculated and analyzed. The results show that the Kuroshio invaded the continental shelf in northeastern Taiwan and southwestern Kyushu and transported nutrients to the continental shelf, while the middle segment (26 掳N ~ (29 掳N) was transported out of the continental shelf. The volume transport net flux of the Kuroshio across the 200m isobath to the eastern continental shelf in spring is 0.44 SvDINP / PO4-PnP O_3-Si flux of 8.93 kmol / s 0.46 kmol / s / s ~ (8.22 kmol / s), respectively. The O_3-Si fluxes of nutrient DINP _ (4-PN) Si in spring through the Taiwan Strait are 6.65 kmol / s 0.41 kmol / s ~ 6.52 kmol / s respectively. The results show that the contribution of the spring Taiwan warm current to the nutrients in the East China Sea shelf is equivalent to that of the Kuroshio.
【作者单位】：中国海洋大学海洋化学理论与工程技术教育部重点实验室;国家海洋局第二海洋研究所;华东师范大学河口海岸学国家重点实验室;
【基金】：国家重点基础研究发展计划(2011CB409802,2011CB409803)
【分类号】：P734.44

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