| Influence of Reclamation Works on the Marine Environment in a Semi-Enclosed Bay |
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| 作者姓名： | Lee M. Ock Park S. Jin Kang T. Soon |
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| 作者单位： | [1]Chonnam National University, Republic of Korea [2]Geosystem Research Corp., Republic of Korea |
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| 摘 要： | 1Introduction GamakBay,anegg shapedseasurfaceareaofap proximately112km2,isasemi enclosedshallowwaterareawithameandepthof9mandhasbotheastandsouthchannelstoreceiveseawaterfromoutside(seeFig.1).Similarscalesoftidalwavesalmostsimultane ouslyenterorexitthrough…
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| 关 键 词： | 海湾 开垦工作 海洋环境 海水交换率 |
| 收稿时间： | 2005-01-10 |
| 修稿时间： | 2006-06-06 |
Influence of reclamation works on the marine environment in a semi-enclosed bay |
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| Lee M. Ock Park S. Jin Kang T. Soon.Influence of Reclamation Works on the Marine Environment in a Semi-Enclosed Bay[J].Journal of Ocean University of China,2006,5(3):219-227. |
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| Authors: | Lee M Ock Park S Jin Kang T Soon |
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| Institution: | 1. Chonnan National University, Republic of Korea
2. Geosystem Research Corp., Republic of Korea |
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| Abstract: | The flow and seawater exchange rates have been predicted using a two-dimensional numerical model and a Lagrangian method for a semi-enclosed shallow bay where reclaiming and dredging works are scheduled. The wind effect on the flow and material transport has been emphasized, and a thirty-year mean value of wind has been considered in the numerical simulation. As a whole, even after the reclaiming and dredging are conducted, the flow pattern looks similar to the original state. However, velocity variations up to 20% to 100% appear in the vicinity of the construction area. In the case of summcr wind forcing, the seawater exchange rate increases from 71.6% to 82.9% after the reclaiming and dredging, as indicated by a particle-tracking method. On the contrary, in the case of winter wind forcing, thc seawater cxchange rate appears to be 97.2% under natural conditions but decrcases slightly to 93.2% aftcr the rcclaiming and dredging. Thus, the wind forcing plays an important role in controlling the seawater exchangc rates. The seawater cxchange rate is further improved by 15% if the dredging is simultaneously carried out with the reclaiming. This suggests that the dredging can be an effective means to mitigate the variation of flow. |
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| Keywords: | dredging random walk method reclaiming seawater exchange rate semi-enclosed bay wind forcing |
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