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2013-2014年南海北部溶解氧的时空变化初探; Preliminary Study on Spatial and Temporal Variation of Dissolved Oxygen in the Northern South China Sea in 2013-2014
易容
Subtype硕士
Thesis Advisor谭烨辉
2015
Degree Discipline环境工程
Keyword南海北部 溶解氧 影响因素 季节变化
Abstract本文在中国科学院战略性先导科技专项项目支持下,于2013年11月~2014年10月期间开展了南海北部海域冬、春、秋三个季节的航次调查,分析了标准层溶解氧(DO)的时空分布特征,并结合该海域的环境参数,重点分析各季节影响溶解氧变化的主要因素,探讨溶解氧对物理、生化过程的响应。主要结论如下: (1)平面分布:冬、春、秋季溶解氧含量范围分别在3.46-8.0mg/L、2.98-7.64mg/L、2.52-7.86mg/L之间,表现为冬季>春季>秋季。三个季节溶解氧平面分布各层具有差异性,50m以浅大致保持北部高于南部这种态势,受水温和台风、海气相互作用、涡旋等物理过程影响明显。往下至次表层,存在季节性温跃层和氧跃层,温跃层厚度春季>秋季>冬季,各季节溶解氧含量变化较大。冬、春季分别存在暖涡和冷涡,涡旋影响区及其边缘、中心区域溶解氧含量具有显著差异,明显受到黑潮高氧水入侵,深度可达500m,对南海...
Other AbstractBased on the data of three-season investigation in the northern South China Sea(SCS) from November 2013 to October 2014, the spatial and temporal distribution of the standard layer of dissolved oxygen (DO) were studied, and combined with environmental parameter, the paper emphatically analyzed the main factors which could affect the variation of DO, and our paper also studied the response of DO to physical and biochemical processes. The main conclusions are as follows: (1) Horizontal distribution: The range of DO content were in 3.46-8.0mg/L、2.98-7.64 mg/L、2.52-7.86 mg/L in winter, spring and autumn, respectively, and showed the typical regulation that DO content in winter was greater than spring, spring was greater than autumn. The dissolved oxygen of three seasons’ horizontal distributio...
Document Type学位论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/14735
Collection学位论文(硕士)
Recommended Citation
GB/T 7714
易容. 2013-2014年南海北部溶解氧的时空变化初探, Preliminary Study on Spatial and Temporal Variation of Dissolved Oxygen in the Northern South China Sea in 2013-2014[D],2015.
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