The spatial and temporal (monthly) variability of river discharge has a significant effect on circulation and transport pathways within shallow embayments whose dynamics are largely controlled by wind and riverine inputs. This study illustrates the effects of the monthly variation in Trent River discharge on simulated particle transport and settling destination in the Bay of Quinte, Lake Ontario for the years 2016–2019. Observations of Lagrangian surface drifter data were used to derive Trent River discharge forcing for a three-dimensional hydrodynamic numerical model of the Bay of Quinte. Peak monthly flushing was up to three times as much as the lowest monthly flushing in any year, with the Trent River responsible for up to 95% of the flushing in low runoff years. Particle transport simulations showed that particles could be trapped along shorelines, which extended residence times, and Trent River releases suggest that researchers should look for delayed peaks in Total Phosphorous (TP) load measurements in observations between Trenton and Belleville as particles move downstream. Particles with constant settling velocities originating from the Trent River did not move downstream past Big Bay, and particles from the Napanee River were the primary source for Longreach.

中文翻译：

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特伦特河每月变化对安大略昆特湾水动力条件的影响：2016-2019 年案例研究

河流流量的空间和时间（每月）变化对浅海湾内的循环和运输路径有显着影响，其动态主要由风和河流输入控制。本研究说明了 2016-2019 年特伦特河流量的每月变化对安大略湖昆特湾的模拟颗粒传输和沉降目的地的影响。拉格朗日表面漂流器数据的观测被用于推导出昆特湾三维流体动力学数值模型的特伦特河流量强迫。每月最高冲水量是任何一年中最低月冲水量的三倍，在低径流年份，特伦特河占冲水量的 95%。粒子传输模拟表明，粒子可能会沿着海岸线被捕获，从而延长了停留时间，而特伦特河的释放表明，随着粒子向下游移动，研究人员应该在特伦顿和贝尔维尔之间的观测中寻找总磷 (TP) 负载测量中的延迟峰值。来自特伦特河的具有恒定沉降速度的颗粒不会向下游移动经过大湾，而来自纳帕尼河的颗粒是 Longreach 的主要来源。