鲅鱼圈港倾废区疏浚污染物的时空分布和运移规律  

Regular Patterns of the Time and Space Distributions and Transportation of Dredged Pollutants in the Dumping Area of the Bayuquan Habour, Yinkou, Liaoning Province

作　　者：吴之庆[1] 王萍[1] 孙延维[1] 

机构地区：[1]国家海洋环境监测中心

出　　处：《黄渤海海洋》1996年第2期23-32,共10页Journal of Oceanography of Huanghai & Bohai Seas

摘　　要：本文依据营口鲅鱼圈港倾废区８个航次的疏浚物监测和追踪调查数据，深入了解了倾废海区中悬浮物、浊度、ＣＯＤ和ｐＨ等指标随潮汐变化的时空分布规律。调查结果表明：虽然该倾废区实施疏浚物倾倒已达４ａ，但该区中除悬浮物含量略有增加外，其他指标（如ＣＯＤ，ＤＯ，ｐＨ等）基本处于一类海水正常值范围。疏浚物倾倒后２０ｍｉｎ内可引起水中悬浮物和浊度含量的急剧上升，对海水的ｐＨ和ＣＯＤ含量也有一定程度的影响．表面浑水团主要随表层流和风向运移，悬浮物和浊度降至海区背景浓度的时间约需３５～４５ｍｉｎ，迁移距离可达１．３ｎｍｉｌｅ，影响面积通常可达０．３ｋｍ２．In this paper, the regular patterns of temporal and spatial distributions of the suspended solids (SS), turbidity (T), COD,DO as well as PH which vary with tides have been thoroughly investigated based on the data on dredged materials monitoring and tracking survey collected during eight cruises in the dumping area of the Bayuquan Habour. Yingkou. Investigative results have Shown: although the dumping of dredged materials has been carried out for four years at this dumping area, the SS content slightly increased, yet the other indices (COD. DO and pH ) are basically in the normal range of class 1 sea water. Twenty minutes after dumping of dredged materials the SS content and T rapidly by increased. The values of pH and COD were affected to some extent. The surface turbid water masses were transported mainly with surface current and wind direction. It took about 35 to 45min for the SS and T Contents to decrese to the background values and move 1.3 n mi and the area affected generlly reached 0.3 km2.

关 键 词：倾废 疏浚物 鲅鱼 污染 运移规律 时空分布 

分 类 号：X55[环境科学与工程—环境工程]