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作 者:李劳钰 孙霞 王宗兴 辛明 韦钦胜 高立宝 薛亮 LI Lao-yu;SUN Xia;WANG Zong-xing;XIN Ming;WEI Qin-sheng;GAO Li-bao;XUE Liang(First Institute of Oceanography , MNR , Qingdao 266061, China;Laboratory for Regional Oceanography and Numerical Modeling, Pilot National Laboratoryfor Marine Science and Technology (Qingdao) , Qingdao 266237, China;Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory forMarine Science and Technology (Qingdao) , Qingdao 266237, China)
机构地区:[1]自然资源部第一海洋研究所,山东青岛266061 [2]青岛海洋科学与技术试点国家实验室区域海洋动力学与数值模拟功能实验室,山东青岛266237 [3]青岛海洋科学与技术试点国家实验室海洋生态与环境科学功能实验室,山东青岛266237
出 处:《海洋科学进展》2019年第2期315-324,共10页Advances in Marine Science
基 金:中央级公益性科研院所基本科研业务费专项资金资助项目--富营养化海域生物过程对碳酸钙饱和度的影响:以胶州湾为例(2016Q01);束星北青年学者基金之南极重点海域的关键海洋动力过程研究(2018S02);青岛海洋科学与技术试点国家实验室海洋生态与环境科学功能实验室开放基金项目--夏季黄海冷水团锋面系统的生物地球化学作用及机制研究(LMEES201808)
摘 要:基于2017-10-18航次在胶州湾调查获取的水文、碳化学和叶绿素a(Chl a)等数据与资料,分析了秋季该海域文石饱和度(Ω_(arag(现场)))的分布状况,探讨了影响其空间分布的主要控制因素。结果显示,秋季航次期间胶州湾表层Ω_(arag(现场))为1.85~2.57,平均值为(2.20±0.24);其分布具有较大的空间差异,低值位于湾的西部和东北部(<2.05),高值位于湾口(>2.45),总体上呈现出由湾口向湾顶逐步降低的趋势。除了通过分析Ω_(arag(现场))与温度、盐度和Chl a的相关性来定性确定Ω_(arag(现场))的主控因素外,我们还通过引入总碱度与溶解无机碳的差值作为Ω_(arag(现场))的指征参数,定量确定了影响Ω_(arag(现场))空间分布的主要过程及其贡献。研究发现,陆源输入是影响胶州湾秋季Ω_(arag(现场))空间分布的最重要因素(>50%),而温度和生物过程的影响相对较小。Surface distribution of aragonite saturation state (Ω arag(in situ)) in the Jiaozhou Bay during the fall was reported based on hydrology, carbonate chemistry and chlorophyll a data collected in the cruise on 2017-10-18.Results show that the surface Ω arag(in situ) ranged from 1.85 to 2.57, with an average of (2.20 ± 0.24).Ω arag(in situ) showed a large spatial variability, with low values of < 2.05 in the western and northeastern parts of the bay and high values of >2.45 in the mouth of the bay, demonstrating a feature of decreasing from the mouth to the top of the bay.In addition to a correlation analysis (qualitative analysis)of Ω arag(in situ) with sea surface temperature, salinity and chlorophyll a to determine the major factor, a quantitative analysis was conducted via introducing the difference between total alkalinity and dissolved inorganic carbon (TA-DIC) as a indicated parameter of Ω arag(in situ) to identify the main processes and contributions for spatial distribution of Ω arag(in situ).Our results indicate that terrestrial input is the most important factor for spatial distribution of Ω arag(in situ)(> 50%) in Jiaozhou Bay in the fall, while the contributions of temperature and biological processes are relatively minor.
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