| 摘要: |
| 利用1981-1990年象山港的实测水文断面资料和盐度通量分析方法定量检验了各种动力因子对象山港水体混合的贡献，探讨了象山港水体混合的控制机理。象山港牛鼻水道至佛渡水道为平流和潮弥散混合区，水体纵向混合较好。象山港狭湾内段的潮混合强度较弱，垂向环流和潮振荡的垂向切变作用突出，水体纵向混合较狭湾外差。象山港狭湾外段为内段与口外的过渡区，各种混合因子的地位随季节和潮汛而变，水体混合状况介于狭湾内段和口外之间。 |
| 关键词: 水体混合 通量分析 象山港 |
| DOI：10.11693/hyhz200003014014 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目，48907026号 |
附件 |
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| SALINITY DISTRIBUTION AND MIXING IN XIANGSHANGANG BAY Ⅱ. MIXING ANALYSIS |
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DONG Li-xian, SU Ji-lan
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Key Laboratory of Ocean Dynamic Processes and Satellite Oceanography, Second Institute of Oceanography, State Oceanic Administration, Hangzhou310012
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| Abstract: |
| The mixing processes in Xiangshangang Bay are analyzed using a data set collected during 1981–1990 and the flux balance methods.
The results show that the region along the Niubi Channel and Fodu Channel is a tidal passage, the water mass is well mixed by current advection and tidal dispersion. In the inner part of Xiangshangang Bay, the mixing is dominated by a combination of residual gravitational circulation and the vertical tidal current shear effects. The water mass is not longitudinally well mixed as in the Niubi and Fodu Channels.
The region near the A6–A8 cross section is a transient region between the two regions mentioned above. Residual gravitational circulation, vertical shear effects, lateral residual circulation, lateral shear effect, and tidal dispersion vary with the season and tide. |
| Key words: Mixing, Flux analysis, Xiangshangang Bay |
