| Dong Lixian. 1998. Classification of highly turbid Jiaojiang Estuary. Acta Oceanologica Sinica, (4):469－482 |
| Classification of highly turbid Jiaojiang Estuary |
| Classification of highly turbid Jiaojiang Estuary |
| Received:March 15, 1996 Revised:June 11, 1997 |
| DOI： |
| Key words:Estuary stratification mixing fine sediment dynamics |
| 中文关键词: Estuary stratification mixing fine sediment dynamics |
| 基金项目:This study was supported by the National Natural Science Foundation of China under contract No. 49276274, the Zhejiang Province Natural Science Foundation under contract No. 490013, the China-Australia bilateral science and technology program, the Australian Institute of Marine Science, the Modelling Laboratory of the Marine Science in the Second Institute of Oceanography of the State Oceanic Administration. |
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| Abstract: |
The Jiaojiang Estuary is shallow,macro-tidal dominated and extremely turbid,with a larger variation of the freshwater discharge.The estuarine stratification and classification are analysed by using a set of field data observed in wet season.
In spring tide,the depth-mean peak tidal currents can reach 2 m/s.During flood tide the water column is vertitally homogeneous,but the horizontal salinity gradient is large and there is a fresh water front.A 1 m thick fluid mud layer capped by lutocline is formed when the tidal current is less than 0.3 m/s.As the low-salinity trapped in the fluid mud layer,underlying saltier water enhances vertical mixing when the fluid mud layer is eroded and the water column is only slightly stratified during ebb tide. |
| 中文摘要: |
The Jiaojiang Estuary is shallow,macro-tidal dominated and extremely turbid,with a larger variation of the freshwater discharge.The estuarine stratification and classification are analysed by using a set of field data observed in wet season.
In spring tide,the depth-mean peak tidal currents can reach 2 m/s.During flood tide the water column is vertitally homogeneous,but the horizontal salinity gradient is large and there is a fresh water front.A 1 m thick fluid mud layer capped by lutocline is formed when the tidal current is less than 0.3 m/s.As the low-salinity trapped in the fluid mud layer,underlying saltier water enhances vertical mixing when the fluid mud layer is eroded and the water column is only slightly stratified during ebb tide. |
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