Strengthening stratification due to ongoing global warming on the outer shelf of the East China Sea: oligotrophication and deoxygenation and the impact on ecosystems

About this project

Japan Grant Number
JP20H04319
Funding Program
Grants-in-Aid for Scientific Research
Funding organization
Japan Society for the Promotion of Science
Project/Area Number
20H04319
Research Category
Grant-in-Aid for Scientific Research (B)
Allocation Type
  • Single-year Grants
Review Section / Research Field
  • Basic Section 63010:Environmental dynamic analysis-related
Research Institution
  • University of Toyama
Project Period (FY)
2020-04-01 〜 2023-03-31
Project Status
Completed
Budget Amount*help
17,680,000 Yen (Direct Cost: 13,600,000 Yen Indirect Cost: 4,080,000 Yen)

Research Abstract

温暖化に伴う海面付近の水温上昇と河川水等の供給量増加により、海洋表層の上層と下層の間の躍層形成が強化・長期化し、海水の上下が入れ替わる鉛直混合の弱化が懸念される。本研究は、世界最大級の陸棚(~200m)を持つ東シナ海において現場観測を行い、夏季から秋季にかけて上層と下層・底層の海水交換が弱化し、「上層の貧栄養化・底層の貧酸素化」が進むメカニズム明らかにして、さらにそれが生態系に及ぼす影響を評価する。

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