Long-period oscillations in a harbour induced by incident short waves
Long-period oscillations in a harbour induced by incident short waves
复制标题
DOI：
10.1017/s0022112089002958
复制
发表时间：
1989-11
影响因子：
3.7
通讯作者：
C. Mei;Y. Agnon
中科院分区：
文献类型：
--
作者：
C. Mei;Y. Agnon
已知具有窄频带的前进短波伴随着随群行进的长沉降波。在有限深度，短波散射的大型结构或变化的海岸线可以辐射自由长波的传播速度比入射设置。在一个部分封闭的港口，短波通过入口袭击，这种自由的长波可以进一步共振海港盆地的自然模式。本文提出了一个渐近理论的港口，其水平尺寸是远远大于入口宽度，这是反过来又比短波长宽得多。
Progressive short waves with a narrow frequency band are known to be accompanied by long set-down waves travelling with the groups. In finite depth, scattering of short waves by a large structure or a varying coastline can radiate free long waves which propagate faster than the incident set-down. In a partially enclosed harbour attacked by short waves through the entrance, such free long waves can further resonate the natural modes of the harbour basin. In this paper an asymptotic theory is presented for a harbour whose horizontal dimensions are much greater than the entrance width, which is in turn much wider than the short wavelength.