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China Ocean Engineering

, Volume 27, Issue 4, pp 557–562 | Cite as

Disintegration of linear edge waves

  • Gang Wang (王 岗)
  • Viet Thanh Nguyena
  • Jin-hai Zheng (郑金海)Email author
  • Guo-hai Dong (董国海)
  • Xiao-zhou Ma (马小舟)
  • Yu-xiang Ma (马玉祥)
Technical Notes

Abstract

It is demonstrated that offshore wavenumbers of edge waves change from imaginary wavenumbers in deep water to real wavenumbers in shallow water. This finding indicates that edge waves in the offshore direction exist as evanescent waves in deep water and as propagating waves in shallow water. Since evanescent waves can stably exist in a limited region while propagating waves cannot, energy should be released from nearshore regions. In the present study, the instability region is predicted based on both the full water wave solution and the shallow-water wave approximation.

Key words

edge waves evanescent waves propagating waves water waves 

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Copyright information

© Chinese Ocean Engineering Society and Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Gang Wang (王 岗)
    • 1
    • 2
  • Viet Thanh Nguyena
    • 2
  • Jin-hai Zheng (郑金海)
    • 1
    • 2
    Email author
  • Guo-hai Dong (董国海)
    • 3
  • Xiao-zhou Ma (马小舟)
    • 3
  • Yu-xiang Ma (马玉祥)
    • 3
  1. 1.State Key Laboratory of Hydrology-Water Resources and Hydraulic EngineeringHohai UniversityNanjingChina
  2. 2.College of Harbor Coastal and Offshore EngineeringHohai UniversityNanjingChina
  3. 3.State Key Laboratory of Coastal and Offshore EngineeringDalian University of TechnologyDalianChina

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