Modeling of CSO-Induced Pollutant Transport in Mt. Hope Bay
Modeling of CSO-Induced Pollutant Transport in Mt. Hope Bay
复制标题
希望山湾 CSO 引起的污染物输送模型
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
M. Spaulding
中科院分区：
文献类型：
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作者：
Wenrui Huang;M. Spaulding
由于风暴事件而产生的污水溢出（CSO）排放在罗德岛和马萨诸塞州的希望湾山表面形成了强烈的分层污染物羽状物。为了检验CSO引起的污染物影响，使用三维数值模型模拟了1990年9月22日风暴期间CSO排放口释放染料在海湾内的运输过程。模型采用垂直γ坐标系，近地表具有较高的网格分辨率来描述组分输运。模式预测合理地表明，CSO羽流仍然集中在地表附近，并沿东海岸向下输送。对海平面高度、海流、盐度和染料浓度的预测与现有观测结果的一致性很好。预测染料浓度的时间序列用于估计冲洗时间，在海湾中部约为2天。对几种垂直网格分辨率进行了敏感性研究。使用……
Combined sewage overflow (CSO) discharges due to a storm event create strongly stratified pollutant plumes on the surface of Mt. Hope Bay, of Rhode Island and Massachusetts. To examine the CSO-induced pollutant impact, a three-dimensional numerical model was used to simulate the transport processes in the bay resulting from a dye release at CSO discharges during a storm event on September 22, 1990. The model used a vertical γ-coordinate system, with higher grid resolution near surface, to describe the constituent transport. Model predictions reasonably showed that the CSO plume remained concentrated near the surface and was transported down bay along the eastern shore. Agreement of predictions of sea surface elevation, currents, salinity, and dye concentrations with available observations was good. Time series of predicted dye concentrations were used to estimate the flushing time, which was approximately 2 days at midbay. Sensitivity studies were performed for several vertical-grid resolutions. The use o...