書誌事項
- タイトル別名
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- Response of Hypoxic Water Mass in Tokyo Bay to the Variation in Hydrographic Condition Outside of the Bay.
抄録
Temporal and spatial variation in the inflow of oceanic water into Tokyo Bay and accompanying change in circulation in the bay were studied with emphasis on the movement of the hypoxic water mass. Longitudinal distributions of hydrographic conditions, oxygen concentration and nutrient concentrations were repeatedly measured in Tokyo Bay from the bay head to off the bay mouth in summer, 1998. Changes in the density in the upper several tens of meters in the ocean induce inflow and outflow in the adjacent shallow bay. When water density increased in the upper ocean, heavy saline water intruded into the lower layer in the bay. This intrusion forced the "bottom hypoxic water mass" to the bay head and finally lifted it up to the middle layer, forming a "subsurface hypoxic water mass". The subsurface hypoxic water mass spread within a thin layer just under the pycnocline and part of it spread out of the bay. When the intruding heavier water retreated, the hypoxic water mass followed this movement and was displaced to the bay mouth from the central bay. The bottom hypoxic water mass dominates north of Yokohama, while the subsurface oxygen minimum appears frequently south of Yokohama. The movement of the hypoxic water mass may influence nitrogen and phosphorus transport in the bay.
収録刊行物
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- 海の研究
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海の研究 9 (6), 303-313, 2000
日本海洋学会
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詳細情報 詳細情報について
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- CRID
- 1390001204381464320
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- NII論文ID
- 130004387838
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- ISSN
- 21863105
- 09168362
- http://id.crossref.org/issn/09168362
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可