Response of a circular ice floe to ocean waves
Response of a circular ice floe to ocean waves
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DOI：
10.1029/95jc03706
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发表时间：
1996-04-15
影响因子：
3.6
通讯作者：
Squire, VA
中科院分区：
文献类型：
--
作者：
Meylan, MH;Squire, VA
提出了一种新的模型来再现在长波峰海浪的作用下产生的孤立、圆形、柔性浮冰的行为。这项工作的预期应用最终是对海浪传播通过的边缘冰区(MIZ)的全三维模拟，允许预测衰减和方向推进，并根据观测进行验证。(现有理论没有正确对待方向性变化。)为了能够对模型进行检验，发展了两种独立的方法：一种是对薄圆板的本征函数进行展开，另一种是用更一般的本征函数法来构造逃逸的格林函数。给出了几种逃生几何形状下，逃生周围水中的位移和三维散射图。该模型还被用来研究浮体中产生的应变场、其浪涌响应以及在其周围的水中启动的能量。最后，为了了解浮团如何聚集在一起形成粘性结构，绘制了不同厚度和直径的浮体所受的力。
A new model is presented to reproduce the behavior of a solitary, circular, flexible ice floe brought into motion by the action of long-crested sea waves. The intended application of the work is ultimately a fully three-dimensional analogue of a marginal ice zone (MIZ) through which ocean waves propagate, allowing the attenuation and directional advance to be forecast and validated against observations. (Existing theory does not treat directional changes correctly.) To enable a check to be made on the model, two independent methods are developed: an expansion in the eigenfunctions of a thin circular plate, and the more general method of eigenfunctions used to construct a Green's function for the flee. Displacement and three-dimensional scattering patterns in the water surrounding the flee are given for several flee geometries. The model is also used to investigate the strain field generated in the floe, its surge response, and the energy initiated in the water encircling it. Finally, with the aim of understanding how floes herd together to form cohesive structures in the MIZ, the force induced on floes of various thicknesses and diameters is plotted.