海洋湖沼通报
海洋湖沼通報
해양호소통보
TRANSACTIONS OF OCEANOLOGY AND LIMNOLOGY
2014年
2期
9-14
,共6页
排污口%污染物扩散%FVCOM%模拟%长江口
排汙口%汙染物擴散%FVCOM%模擬%長江口
배오구%오염물확산%FVCOM%모의%장강구
sewage outfalls%pollutant diffusion%FVCOM%simulation%Yangtze River Estuary
长江口地形复杂，水动力过程也极为复杂，模拟污染物的三维扩散也十分困难。本文基于三维海洋模型 FVCOM和示踪剂扩散技术，模拟上海市石洞口、竹园、白龙港和新和4大排污口的污染物质在长江口的扩散分布，分析污染物在水体表层、中层、底层的扩散特性及其影响范围。研究表明长江口污染物的扩散在垂向上分布差异不大，在长江口内污染物由于受到长江径流影响较大，虽然水平分布存在往复运动的现象，但总体趋势是向长江口扩散的。当污染物流出长江口以后，受潮流的影响较大，逐渐向外海扩散，最终部分污染物会扩散进杭州湾，排污口的污染物质会对排污口沿岸、上海中华鲟自然保护区上海九段沙湿地国家级自然保护区造成生态影响，对上海市的饮用水源地不会造成影响。
長江口地形複雜，水動力過程也極為複雜，模擬汙染物的三維擴散也十分睏難。本文基于三維海洋模型 FVCOM和示蹤劑擴散技術，模擬上海市石洞口、竹園、白龍港和新和4大排汙口的汙染物質在長江口的擴散分佈，分析汙染物在水體錶層、中層、底層的擴散特性及其影響範圍。研究錶明長江口汙染物的擴散在垂嚮上分佈差異不大，在長江口內汙染物由于受到長江徑流影響較大，雖然水平分佈存在往複運動的現象，但總體趨勢是嚮長江口擴散的。噹汙染物流齣長江口以後，受潮流的影響較大，逐漸嚮外海擴散，最終部分汙染物會擴散進杭州灣，排汙口的汙染物質會對排汙口沿岸、上海中華鱘自然保護區上海九段沙濕地國傢級自然保護區造成生態影響，對上海市的飲用水源地不會造成影響。
장강구지형복잡，수동력과정야겁위복잡，모의오염물적삼유확산야십분곤난。본문기우삼유해양모형 FVCOM화시종제확산기술，모의상해시석동구、죽완、백룡항화신화4대배오구적오염물질재장강구적확산분포，분석오염물재수체표층、중층、저층적확산특성급기영향범위。연구표명장강구오염물적확산재수향상분포차이불대，재장강구내오염물유우수도장강경류영향교대，수연수평분포존재왕복운동적현상，단총체추세시향장강구확산적。당오염물류출장강구이후，수조류적영향교대，축점향외해확산，최종부분오염물회확산진항주만，배오구적오염물질회대배오구연안、상해중화심자연보호구상해구단사습지국가급자연보호구조성생태영향，대상해시적음용수원지불회조성영향。
There is complex topography in the Yangtze River Estuary (YRE),where hydrodynamic process is also extremely complex.It is difficult to simulate three-dimensional pollutants diffusion in the YRE.In this paper,based on three-dimensional ocean model (FVCOM)and the tracer-tracking technology,simulated the pollutant diffusions of sewage outfalls (Shi Dongkou,Zhu Yuan,Bai Long-gang,and Xin He)in the Shanghai,analyzed of pollutants diffusion characteristics and influence scopes in the surfaces,middle,bottom layers in the YRE.The results showed that there is not obvious differ-ence in vertical distribution of pollutants diffusion in the YRE.Due to greater effect of Yangtze River runoff on pollutants diffusion in the YRE,although horizontal diffusion distribution oscillated move-ment by tide,the overall diffusion trend is to the YRE.After pollutants diffused out of the YRE,pol-lutants are greatly influenced by the tide.Pollutants gradually were diffused to out to sea.Finally some pollutants can be diffused into the Hangzhou Bay.Pollutants can effect on coast nearby sewage out-falls,Chinese sturgeon nature reserve,Jiuduansha shoals wetland national nature reserve,little effect on source of drinking water in Shanghai.
