title: Nonlinear Generation of Vorticity by Surface Waves.
abstract: We demonstrate that waves excited on a fluid surface produce local surface rotation owing to hydrodynamic nonlinearity. We examine theoretically the effect and obtain an explicit formula for the vertical vorticity in terms of the surface elevation. Our theoretical predictions are confirmed by measurements of surface motion in a cell with water where surface waves are excited by vertical and harmonic shaking the cell. The experimental data are in good agreement with the theoretical predictions. We discuss physical consequences of the effect.
authors.affiliation: Institute of Solid State Physics, Chernogolovka, 2 Academician Ossipyan str., 142432 Moscow Region, Russia.
authors.forename: S V
authors.initials: SV
authors.lastname: Filatov
authors.affiliation: Landau Institute for Theoretical Physics, Chernogolovka, 1-A Akademika Semenova av., 142432 Moscow Region, Russia.|Moscow Institute of Physics and Technology, Dolgoprudny, 9 Institutskiy per., 141700 Moscow Region, Russia.
authors.forename: V M
authors.initials: VM
authors.lastname: Parfenyev
authors.affiliation: Landau Institute for Theoretical Physics, Chernogolovka, 1-A Akademika Semenova av., 142432 Moscow Region, Russia.|Moscow Institute of Physics and Technology, Dolgoprudny, 9 Institutskiy per., 141700 Moscow Region, Russia.
authors.forename: S S
authors.initials: SS
authors.lastname: Vergeles
authors.affiliation: Institute of Solid State Physics, Chernogolovka, 2 Academician Ossipyan str., 142432 Moscow Region, Russia.
authors.forename: M Yu
authors.initials: MY
authors.lastname: Brazhnikov
authors.affiliation: Institute of Solid State Physics, Chernogolovka, 2 Academician Ossipyan str., 142432 Moscow Region, Russia.
authors.forename: A A
authors.initials: AA
authors.lastname: Levchenko
authors.affiliation: Landau Institute for Theoretical Physics, Chernogolovka, 1-A Akademika Semenova av., 142432 Moscow Region, Russia.|Moscow Institute of Physics and Technology, Dolgoprudny, 9 Institutskiy per., 141700 Moscow Region, Russia.
authors.forename: V V
authors.initials: VV
authors.lastname: Lebedev