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Study of material flux from East Asian rivers into the ocean

东亚河流入海物质通量研究

基本信息

批准号：
07041097
负责人：
NOZAKI Yoshiyuki
金额：
$ 4.48万
依托单位：
Ocean Research Institute, University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for international Scientific Research
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07041097/
关键词：
Yantze river Heavy metals river estuary Chao Praya river Indium Rare earth elements ICP mass spectrometric method 微量元素河川・海水混合域物質循環東アジア河川

项目摘要

The purpose of this study is to evaluate the influence of East Asian rivers in the biogeochemical cycling in the ocean. Originally, we intended to study the Yantze river estuary using a Chinese research vessel "Venus II" in colaboration with professor Y.Qin and other scientists of the Quindao Oceanographic Institution (Academica Sinica). Planning of this project had been made through correspondence and it was agreed that the survey would start in November, 1995. However, Chinese counter part informed us that the survey needed to be postponed. Then, Principal Investigater, Y.Nozaki also visited Quindao to discuss further the detail plan and to make preliminary survey on the Yanzte river. But unfortunately, due to abrupt change of policy in marine sciences in China, we could not get the permission of Chinese Government (SOA : the State of Ocean Administration).Therefore, we shifted to the second target and could successfully work on the Chao Praya (Manum) river in Thailand. Field sampling was made 3 times a year, February, July and November, 1996 through colaboration with Professors Manuwadi Hungspreugs, and Anond Snidvongs, and students of Chulalongkorn University. It is important to note that our party could be based on the laboratory of SEAFDEC (Southeast Asian Fisheries Development Center) at the Chao Praya river mouth. Water and sediment sampling was made by using a fishing boat in the Chao Praya estuary and the Gulf of Thailand. Heavy metals like rare earth elements and indium in the water samples were measured by ICP mass spectrometric method. Organic matters in sediments were also measured at Nagoya University by K.Ohta. Some of the results have been accepted for publication on the journal of "Earth Planetary Science Letters".

本研究的目的是评估东亚河流对海洋地球化学循环的影响。我们原本打算与青岛海洋研究所的秦燕教授和其他科学家合作，使用中国的研究船“金星二号”来研究长江河口。该项目的规划是通过通信进行的，并商定调查将于1995年11月开始。然而，中国同行通知我们，调查需要推迟。随后，首席调查员野崎洋也访问了金岛，进一步讨论了详细计划，并对扬兹特河进行了初步调查。但由于中国海洋科学政策的突然变化，我们无法获得中国政府（SOA：国家海洋局）的许可，因此我们转向第二个目标，并成功地在泰国的Chao Praya（Manum）河开展工作。通过与Manuwadi Hungspreugs教授、Anond Snidvongs教授和朱拉隆功大学的学生合作，每年在1996年2月、7月和11月进行3次实地取样。值得注意的是，我们的团队可以建立在位于湄南河河口的SEAFDEC（东南亚渔业发展中心）实验室的基础上。利用一艘渔船在湄南河河口和泰国湾进行了水和沉积物取样。采用电感耦合等离子体质谱法测定水样中的稀土元素和铟等重金属。名古屋大学的K.Ohta也测定了沉积物中的有机质。部分结果已被《地球行星科学快报》杂志接受发表。