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首页> 外文期刊>Chinese science bulletin >Suspended particulate matter in Jiaozhou Bay: Properties and variations in response to hydrodynamics and pollution
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Suspended particulate matter in Jiaozhou Bay: Properties and variations in response to hydrodynamics and pollution

机译：胶州湾悬浮颗粒物：响应水动力和污染的性质和变化

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摘要

Based on water samples collected and observations of currents, tidal levels as well as turbidities taken, respectively over a period of 15 and 7 d, in southwestern Jiaozhou Bay on August, 2001, it was found that: (i) the average content of non mineral component amounted to 87 percent of the suspended sediment matter (SPM) in Jiaozhou Bay, much higher than in estuaries and bays where turbidity is high and mineral particulates dominates; (ii) in contrast to high turbid bays, SPM was generally coarser than bed deposits and in upper water column than in lower water column in Jiaozhou Bay; (iii) in fair weathers, suspended sediment concentration (SPC) varied regularly within tidal cycles and neap-spring cycles, but the regularity was deformed in storms; and (iv) SPC was controlled by settling/ resuspension near the bed and by advection at the surface at the study site with a depth of 20 m, suggesting weak vertical exchanges. It was concluded that SPM property of a low turbid bay is sensitive to pollution, and that the maintenance of low turbidity in the bay depends on less SPM supply, low waves and currents, and controlling on discharge of particulate pollutants.
机译：根据2001年8月在胶州湾西南部15 d和7 d期间分别收集的水样以及对水流，潮汐水平和浊度的观察，发现：（i）胶州湾的矿物成分占悬浮沉积物（SPM）的87％，远高于浊度高且矿物颗粒占主导地位的河口和海湾。 （ii）与高浑浊的海湾相比，胶州湾的SPM通常比床沉积物粗，上部水柱的下部比下部水柱的粗； （iii）在晴朗的天气中，悬浮的泥沙浓度（SPC）在潮汐周期和小睡泉周期内有规律的变化，但在暴风雨中这种规律性发生了变化； （iv）通过在床附近沉降/重新悬浮以及在研究地点的地面平流，深度为20 m来控制SPC，这表明垂直交换较弱。结论是，低浊度海湾的SPM特性对污染敏感，而海湾中低浊度的维持取决于较少的SPM供应，低波和低水流以及控制颗粒污染物的排放。

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