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Tide-surge and wave interaction in the Gulf of Maine during an extratropical storm

机译：一次热带风暴期间缅因湾的潮汐波动和波相互作用

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The fully coupled spectral wave and circulation model SWAN + ADCIRC was applied to investigate tide-surge and wave interaction in the Gulf of Maine during the extratropical storm on Patriot's Day of 2007. Significant tide-surge and wave interaction was found over Georges Bank and in the coastal areas. Over Georges Bank, the wave-induced current reached 0.2 m/s at the storm peak, accounting for 17 % of the total depth-averaged current. In Saco Bay, the current was dominated by wave-induced current with a magnitude up to 1.0 m/s during the storm. Two clockwise circulation gyres were found to form and sustain over a period of 26 hours during the storm in the bay. They were driven by spatial variations of wave height, direction and the resulting wave radiation stress gradient. Wave setup reached 0.2 m at the storm peak along the coast of Saco Bay. In Saco Bay, wave energy dissipation was reduced and wave height increased due to the increased water depth at high tide and surge. Therefore, wave height was modulated by tide and surge accordingly along the coast. As a result, wave setup and wave-induced current in the bay were also modulated by tide and surge. During the tidal cycle at the storm peak, wave setup increased with tidal level and the maximum wave setup coincided with high tide.
机译：应用完全耦合的光谱波和环流模型SWAN + ADCIRC来研究2007年爱国者纪念日在缅因州湾发生的潮潮和波相互作用。在Georges Bank和沿海地区。在乔治银行上空，在风暴峰值时，波感应电流达到0.2 m / s，占总深度平均电流的17％。在萨科湾，在风暴期间，该电流主要由波感应电流控制，其幅度高达1.0 m / s。在海湾风暴期间，发现有两个顺时针旋转环流形成并维持了26小时。它们是由波高，方向和所产生的波辐射应力梯度的空间变化驱动的。在萨科湾沿岸的风暴高峰期，波浪形成达到0.2 m。在萨科湾，由于涨潮和浪涌时水深的增加，波浪能量的消耗减少了，波浪高度增加了。因此，波高是由潮汐调节的，并沿海岸随之涌动。结果，潮汐和浪涌也调节了海湾中的波浪形成和波浪感应电流。在风暴高峰的潮汐周期中，波浪形成随潮汐水平增加而增加，最大波浪形成与高潮相吻合。

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