Coupled Perturbed Modes over Sloping Penetrable Bottom  

作　　者：Fei-Long Zhu Eric I. Thorsos Feng-Hua Li 朱飞龙;Eric I. Thorsos;李风华(State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190;University of Chinese Academy of Sciences, Beijing 100049;Applied Physics Laboratory, University of Washington, WA 98105, USA)

机构地区：[1]State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190 [2]University of Chinese Academy of Sciences, Beijing 100049 [3]Applied Physics Laboratory, University of Washington, WA 98105, USA

出　　处：《Chinese Physics Letters》2017年第7期126-129,共4页中国物理快报（英文版）

摘　　要：In environments with water depth variations, one-way modal solutions involve mode coupling. Higham and Tindle developed an accurate and fast approach using perturbation theory to locally determine the change in mode functions at steps. The method of Higham and Tindle is limited to low frequency （≤250 Hz）. We extend the coupled perturbation method, thus it can be applied to higher frequencies. The approach is described and some examples are given.In environments with water depth variations, one-way modal solutions involve mode coupling. Higham and Tindle developed an accurate and fast approach using perturbation theory to locally determine the change in mode functions at steps. The method of Higham and Tindle is limited to low frequency （≤250 Hz）. We extend the coupled perturbation method, thus it can be applied to higher frequencies. The approach is described and some examples are given.

关 键 词：Coupled Perturbed Modes over Sloping Penetrable Bottom 

分 类 号：TB56[交通运输工程—水声工程]