| 闽浙沿岸海域春季溶解态稀土元素的分布和来源 |
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| 引用本文： | 李换新,何会军,张劲.闽浙沿岸海域春季溶解态稀土元素的分布和来源[J].中国海洋大学学报(自然科学版),2021(3). |
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| 作者姓名： | 李换新 何会军 张劲 |
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| 作者单位： | 中国海洋大学海洋化学理论与工程教育部重点实验室;日本国立富山大学理学部 |
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| 基金项目： | 国家自然科学基金项目(41530965,41003052);国家重大科研仪器研制项目(41527901);中央高校基本科研业务费专项项目(201962014,201762031)资助。 |
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| 摘 要： | 通过2017年5月闽浙沿岸附近海域航次的温度、盐度和溶解态稀土元素(Rare Earth Elements,REEs)的实测数据,对该海域溶解态REEs的分布、配分模式以及主要影响原因进行了分析。结果表明:研究区域,盐度随着采样站位离岸距离的增加而增大。溶解态REEs则呈现近岸高而远岸低的分布特点。造成这种分布状况的原因:一是近岸陆源河流的输入导致近岸盐度低,REEs浓度高;二是受到高温高盐水(台湾暖流水和黑潮次表层水)的入侵,造成远岸盐度高而溶解态REEs元素浓度低。不同站位的溶解态REEs的配分模式有明显区别。近岸低盐站位由北向南,重稀土元素富集程度逐渐增大,反映了陆源不同河流的输入。通过溶解态REEs的配分模式发现,远岸高盐站位会受到台湾暖流和黑潮次表层水的共同影响。
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| 关 键 词： | 稀土元素 配分模式 河流输入 台湾暖流 黑潮次表层水 闽浙沿岸 |
Distribution Characteristics of Dissolved Rare Earth Elements in Fujian-Zhejiang Coastal Waters |
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| LI Huan-Xin,HE Hui-Jun,ZHANG Jin.Distribution Characteristics of Dissolved Rare Earth Elements in Fujian-Zhejiang Coastal Waters[J].Periodical of Ocean University of China,2021(3). |
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| Authors: | LI Huan-Xin HE Hui-Jun ZHANG Jin |
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| Institution: | (Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China;Earth and Environmental System, Graduate School of Science and Engineering, University of Toyama, Toyama 9308555, Japan) |
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| Abstract: | Based on the measured data of temperature,salinity and dissolved rare earth elements(REEs)of Fujian-Zhejiang coast area in May 2017,the study of distribution,patterns and main influencing influence of dissolved REEs in the study area were analyzed.The results showed that the salinity of the study area increased with the increase of the offshore distance,while the concentration of dissolved REEs is high near the shore and low far from the shore.This condition might be affected by the intrude of Taiwan Warm Current and Kuroshio Subsurface Water,resulting in high salinity and low concentration of dissolved REEs and input of rivers with low salinity resulting in low salinity and high concentration of dissolved REEs.The degree of heavy rare earth elements increased gradually from north to south,reflecting the different sources of input of different rivers.The patterns of the dissolved REEs indicated that the stations far shore were affected by both the Taiwan Warm Current and the Kuroshio subsurface water. |
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| Keywords: | rare earth elements patterns riverine input Taiwan Warm Current Kuroshio subsurface water Fujian-Zhejiang coast area |
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