Statistical properties of wave groups described by group-induced long waves

Lin Weiqi; Huang Peiji

doi:10.1007/BF02844300

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Statistical properties of wave groups described by group-induced long waves

Updated：2023-05-16

- Statistical properties of wave groups described by group-induced long waves
- Journal of Oceanology and Limnology Vol. 10, Issue 1, Pages: 57-67(1992)
- Affiliations：
  
  First Institute of Oceanography
- Author bio：
- Funds：
- DOI：10.1007/BF02844300
  CLC：
- Published：1992
- Accepted：
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Weiqi, L., Peiji, H. Statistical properties of wave groups described by group-induced long waves., Chin. J. Ocean. Limnol. 10, 57–67 (1992). https://doi.org/10.1007/BF02844300
DOI：

Weiqi, L., Peiji, H. Statistical properties of wave groups described by group-induced long waves., Chin. J. Ocean. Limnol. 10, 57–67 (1992). https://doi.org/10.1007/BF02844300 DOI：

摘要

Abstract

A new method using group-induced second-order long waves (GSLW) to describe wave groups is presented in this paper on the basis of the GSLW theory by Longuet-Higgins and Steward (1964). In the method

the parabolic relationship between GSLW and the wave envelope is first deduced

and then the distribution function of GSLW amplitude is derived. Thus

the formulae in terms of the moments of GSLW and short wave spectra for the average time duration and the mean length of runs of wave heights exceeding a certain level can be derived. A new groupiness factor equivalent to half the mean wave number in wave groups is defined by taking into account the widths of spectra of GSLW and short waves. Compared with theoretical results of others

ours are closer to measured wave data.

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Keywords

references

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Longuet-Higgins, M. S. and R. W. Steward, 1962. Radiation stresses and mass transport in gravity waves with application to surf beat.J. Fluid. Mech. 13(4): 481–504.

Longuet-Higgins, M. S. and R. W. Steward, 1964. Radiation stresses in water waves: a physical discussion with application.Deep Sea Res. 12: 529–562.

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Related Author

Lin Wei-qi

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Related Institution

Physical Oceanography Laboratory Ocean University of China

National Marine Environmental Forecasting Center

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