This paper presents laboratory measurements of surface transport due to non-breaking and breaking deep-water focusing surface wave packets and examines the dependence of the transport on the wave packet bandwidth, $\varDelta$ . This extends the work of Deike et al. (J. Fluid Mech., vol. 829, 2017, pp. 364–391) and Lenain et al. (J. Fluid Mech., vol. 876, 2019, p. R1), where similar numerical and laboratory experiments were conducted, but the bandwidth was held constant. In this paper, it is shown that the transport is strongly affected by the bandwidth. A model for the horizontal length scale of the breaking region is proposed that incorporates the bandwidth, central frequency, the linear prediction of the slope at focusing and the breaking threshold slope of the wave packet. This is then evaluated with data from archived and new laboratory experiments, and agreement is found. Furthermore, the horizontal length scale of the breaking region implies modifications to the model of the energy dissipation rate from Drazen et al. (J. Fluid Mech., vol. 611, 2008, pp. 307–332). This modification accounts for differing trends in the dissipation rate caused by the bandwidth in the available laboratory data.

中文翻译：

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带宽在深水破碎波的表面传输和能量耗散中的作用的实验室研究

本文介绍了由于非破裂和破裂深水聚焦表面波包引起的表面传输的实验室测量，并检查了传输对波包带宽的依赖性， $\varDelta$ . 这扩展了 Deike 的工作等。(J.流体机械。, 卷。829, 2017, pp. 364–391) 和 Lenain等。(J.流体机械。, 卷。876, 2019, p. R1)，其中进行了类似的数值和实验室实验，但带宽保持不变。在本文中，表明传输受带宽的影响很大。提出了一种结合了带宽、中心频率、聚焦斜率线性预测和波包破断阈值斜率的断裂区域水平长度尺度模型。然后使用来自存档和新实验室实验的数据对其进行评估，并找到一致性。此外，断裂区域的水平长度尺度意味着对 Drazen 能量耗散率模型的修改等。(J.流体机械。, 卷。611，2008，第 307-332 页）。这种修改解释了由可用实验室数据中的带宽引起的耗散率的不同趋势。