1997 Fiscal Year Final Research Report Summary
TRANSPORT PROCESS OF POLLUTANTS IN THE SOUTHERN YELLOW SEA
| Project/Area Number |
09041152
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Field Research |
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| Research Field |
General fisheries
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| Research Institution | TOKYO UNIVERSITY OF FISHERIES |
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Principal Investigator |
TAKEUCHI Shoichi TOKYO UNIVERSITY OF FISHERIES,FACUTY OF FISHERIES,PROFESSOR, 水産学部, 教授 (00017047)
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| Co-Investigator(Kenkyū-buntansha) |
林 海 中国大気科学研究所, 教授
傅 克忖 中国国家海洋局, 第一海洋研究所, 教授
HASHIMOTO Shinnya TOKYO UNIVERSITY OF FISHERIES,FACUTY OF FISHERIES,ASSISTANT, 水産学部, 助手 (10228413)
SATOH Hiroo TOKYO UNIVERSITY OF FISHERIES,FACUTY OF FISHERIES,ASSOCIATE PROFESSOR, 水産学部, 助教授 (60114914)
YAMAGUCHI Yukuya TOKYO UNIVERSITY OF FISHERIES,FACUTY OF FISHERIES,PROFESSOR, 水産学部, 教授 (70114220)
KECUN Fu FISRT INSTITUTE OF OCEANOGRAPHY,PROFESSOR
HAI Rin INSTITUTE OF ATOMOSPHERIC PHYSICS,PROFESSOR
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| Project Period (FY) |
1997
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| Keywords | POLLUTANTS / CHLOROPHYLL A / HLOCARBON / SOUTH YELLOW SEA |
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| Research Abstract |
The research for chlorophyll a, turbidity and halocarbon was carried out during the cruise conducted on board the research vessel Shinyo Maru during August, 1997 in the Southern Yellow Sea and East China Sea area that exhibits relatively high plant productivity in the water column. The sampling sites were 11 stations along 2 sections between 29ﾟN and 30ﾟ N.The maximum depths of sampling stations were from 98 m at Sta.16 to 1159m at Sta.11.Water samples were collected fron 6 depths at each station with a CTD-rosette sampler fitted with 12 Niskin sample bottles of 1.5 1 volume (General Oceanics). The CTD system was also equipped with a oxygen sensor and in situ fluorometer (Aquatracka, Chelsea Environmental Instruments). During 1997 survey at the region from the shelf to the shelf edge, the higher chlorophyll a concentration which had relatively low salinity in the continental coastal water was observed on the inner shelf of western part of 128.00ﾟ E.By combining the 1995 and 1997 chlorophyll and turbidty data, suggesting the the seaward transport of rich nutrients and particles from the Changjiang River estuary develop.
Distribution of halocarbon concentrations in the East China Sea was examined to evaluate this oceanic area, with relatively high plant productivity in the water column, as a natural halocarbon source. The high concentrations of halocarbons in water were detected during August 1997. Both distributions of halocarbons and correlations among halocarbons showed that there was some sources of halocarbons of seawater in the East China Sea.
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