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首页> 外文期刊>Royal Society Open Science >The effects of precipitation, river discharge, land use and coastal circulation on water quality in coastal Maine
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The effects of precipitation, river discharge, land use and coastal circulation on water quality in coastal Maine

机译：缅因州沿海地区降水，河流流量，土地利用和沿海环流对水质的影响

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Faecal pollution in stormwater, wastewater and direct run-off can carry zoonotic pathogens to streams, rivers and the ocean, reduce water quality, and affect both recreational and commercial fishing areas of the coastal ocean. Typically, the closure of beaches and commercial fishing areas is governed by the testing for the presence of faecal bacteria, which requires an 18–24?h period for sample incubation. As water quality can change during this testing period, the need for accurate and timely predictions of coastal water quality has become acute. In this study, we: (i) examine the relationship between water quality, precipitation and river discharge at several locations within the Gulf of Maine, and (ii) use multiple linear regression models based on readily obtainable hydrometeorological measurements to predict water quality events at five coastal locations. Analysis of a 12 year dataset revealed that high river discharge and/or precipitation events can lead to reduced water quality; however, the use of only these two parameters to predict water quality can result in a number of errors. Analysis of a higher frequency, 2 year study using multiple linear regression models revealed that precipitation, salinity, river discharge, winds, seasonality and coastal circulation correlate with variations in water quality. Although there has been extensive development of regression models for freshwater, this is one of the first attempts to create a mechanistic model to predict water quality in coastal marine waters. Model performance is similar to that of efforts in other regions, which have incorporated models into water resource managers' decisions, indicating that the use of a mechanistic model in coastal Maine is feasible.
机译：雨水，废水和直接径流中的粪便污染可能将人畜共患病病原体带到溪流，河流和海洋中，降低水质，并影响沿海海洋的休闲和商业捕鱼区。通常，海滩和商业捕鱼区的关闭是通过检测粪便细菌的存在来进行的，粪便细菌的培养需要18-24小时的时间进行培养。由于在此测试期间水质会发生变化，因此迫切需要准确，及时地预测沿海水质。在这项研究中，我们：（i）研究缅因湾内几个地点的水质，降水与河流流量之间的关系，以及（ii）使用基于容易获得的水文气象测量值的多元线性回归模型来预测缅因州的水质事件。五个沿海地区。对12年数据集的分析表明，高流量和/或降水事件会导致水质下降。但是，仅使用这两个参数来预测水质会导致许多错误。使用多个线性回归模型对一项为期2年的高频率研究进行的分析显示，降水，盐度，河流流量，风，季节性和沿海环流与水质的变化相关。尽管已经广泛开发了淡水回归模型，但这是创建机械模型来预测沿海海水质量的首次尝试之一。模型的表现与其他地区所做的努力相似，后者已将模型纳入水资源管理者的决策中，这表明在缅因州沿海地区使用机械模型是可行的。

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