| 镭、氡同位素示踪调水调沙对黄河口水体运移及营养盐分布特征的影响 |
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| 引用本文： | 张晓洁,许博超,夏冬,江雪艳,简慧敏.镭、氡同位素示踪调水调沙对黄河口水体运移及营养盐分布特征的影响[J].海洋学报,2016,38(8):36-43. |
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| 作者姓名： | 张晓洁 许博超 夏冬 江雪艳 简慧敏 |
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| 作者单位： | 1.中国海洋大学 海洋化学理论与工程教育部重点实验室, 山东 青岛 266100;海洋国家实验室海洋生态与环境科学功能实验室, 山东 青岛 266071;中国海洋大学 化学化工学院, 山东 青岛 266100 |
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| 基金项目： | 国家自然科学基金（41576075，41206064，41376085）；山东省自然科学基金（ZR2012DQ002）；青岛市科技计划基础研究项目（13-1-4-224-jch）。 |
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| 摘 要： | 为研究调水调沙影响下的镭、氡同位素和营养盐在黄河口的分布特征，于2013年7月调水调沙期间在黄河口及其邻近海域进行了多点的连续观测。研究发现:(1)黄河口海域镭、氡同位素分布呈现明显的“分区”现象，南北两区分别为“调水调沙影响非显著区域”和“调水调沙影响显著区域”，北部海域镭、氡同位素浓度高值主要来源于陆源输入(包括河流输入和海底地下水排放)；(2)调查期间，北部海域水体年龄为(2.9±1.6)d，南部海域水体年龄为(5.0±2.1)d；水龄随潮汐变化表现出涨潮时水龄增大、落潮时水龄减小的波动趋势；(3)北部海域溶解无机氮(DIN)和溶解硅(DSi)含量明显高于南部海域，而溶解无机磷(DIP)在两个区域的含量相差不大。
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| 关 键 词： | 黄河口 调水调沙 镭同位素 氡同位素 营养盐 |
| 收稿时间： | 2015/12/19 0:00:00 |
| 修稿时间： | 2016/2/19 0:00:00 |
Using natural radium and radon isotopes trace the water transport process and nutrients distribution in the Yellow River Estuary under the influence of the Water-Sediment Regulation Scheme |
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| Zhang Xiaojie,Xu Bochao,Xia Dong,Jiang Xueyan and Jian Huimin.Using natural radium and radon isotopes trace the water transport process and nutrients distribution in the Yellow River Estuary under the influence of the Water-Sediment Regulation Scheme[J].Acta Oceanologica Sinica (in Chinese),2016,38(8):36-43. |
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| Authors: | Zhang Xiaojie Xu Bochao Xia Dong Jiang Xueyan and Jian Huimin |
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| Institution: | Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China;Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China,Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China;Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China,College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China;Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China,Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China;Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China and Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China |
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| Abstract: | In order to study the distribution of radium isotopes, radon isotopes and nutrients under the influence of the Water-Sediment Regulation Scheme (WSRS) in the Yellow River Estuary. We carried out 24 h time-series observations at several stations in the estuary and coastal areas in July 2013. The results indicate that: (1) the distributions of radium isotopes and radon isotopes at south side were both different from which in the north side of the estuary, leading the estuary to be divided into two zones. The north zone was under a remarkable influence of WSRS and the south zone was under little influence of WSRS, respectively. High concentrations of radium and radon isotopes in the north zone were mainly due to terrestrial input, such as river discharge and submarine groundwater discharge. (2) Water ages in the north zone was (2.9±1.6)d, which in the south zone was (5.0±2.1)d. Water ages increased with rising tide and decreased with falling tide. (3) Dissolved inorganic nitrogen (DIN) and dissolved silicate (DSi) distribution also showed zonation characteristics, which concentrations were significantly higher in north area. The concentrations of dissolved inorganic phosphorus (DIP), however, were not distinct in the whole study area. |
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| Keywords: | Yellow River Estuary Water-Sediment Regulation Scheme radium isotope radon isotope nutrients |
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