Abstract:
We discuss the properties of two-dimensional, nonlinear, potential, and vortex waves on the surface of an ideal liquid of infinite depth. It is shown that in the quadratic order in the amplitude, the vorticity of the Gerstner wave is equal in magnitude to and different in sign from that of the Stokes drift current in a surface layer. This allows a classic Stokes wave obtained in the framework of potential theory to be interpreted as a superposition of the Gerstner wave and Stokes drift. It is proposed that the nonlinearity coefficient in the nonlinear Shrödinger equation can be physically interpreted as the Doppler frequency shift along the vertically averaged Stokes drift current.
The work was carried out in the framework of a state assignment in the area of scientific research (Assignment No. 5.5176.2017/8.9) and with financial support through a grant from the President of RF for state support of scientific schools, RF-NSh-2685.2018.5.
Received:February 20, 2017 Accepted: March 9, 2017
Citation:
A. A. Abrashkin, E. N. Pelinovsky, “On the relation between Stokes drift and the Gerstner wave”, UFN, 188:3 (2018), 329–334; Phys. Usp., 61:3 (2018), 307–312
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\paper On the relation between Stokes drift and the Gerstner wave
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Linking options:
https://www.mathnet.ru/eng/ufn5944
https://www.mathnet.ru/eng/ufn/v188/i3/p329
This publication is cited in the following 6 articles:
Yan Li, Amin Chabchoub, “How Currents Trigger Extreme Sea Waves. The Roles of Stokes Drift, Eulerian Return Flow, and a Background Flow in the Open Ocean”, Geophysical Research Letters, 51:6 (2024)
A. A. Abrashkin, E. N. Pelinovsky, “Cauchy invariants and exact solutions of nonlinear equations of
hydrodynamics”, Theoret. and Math. Phys., 215:2 (2023), 599–608
A. A. Abrashkin, E. N. Pelinovsky, “Two ways to generalize Gerstner waves in the theory of waves in deep water”, Radiophys. Quantum El., 66:2-3 (2023), 116
N. Pizzo, L. Lenain, O. Rømcke, S. Å. Ellingsen, B. K. Smeltzer, “The role of Lagrangian drift in the geometry, kinematics and dynamics of surface waves”, J. Fluid Mech., 954 (2023)
A. A. Abrashkin, E. N. Pelinovsky, “Gerstner waves and their generalizations in hydrodynamics and geophysics”, Phys. Usp., 65:5 (2022), 453–467
H. Weber Jan Erik, “A Lagrangian study of internal Gerstner- and Stokes-type gravity waves”, Wave Motion, 88 (2019), 257–264