title: Gray solitons on the surface of water.
abstract: The dynamics of surface gravity water waves can be described by the self-defocusing nonlinear Schrödinger equation. Recent observations of black solitons on the surface of water confirmed its validity for finite, below critical depth. The black soliton is a limiting case of a family of gray soliton solutions with finite amplitude depressions. Here, we report observations of gray solitons in water waves, thus, complementing our previous observations of black solitons.
authors.affiliation: Centre for Ocean Engineering Science and Technology, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia and Department of Mechanical Engineering, Imperial College London, London SW7 2AZ, United Kingdom.
authors.forename: A
authors.initials: A
authors.lastname: Chabchoub
authors.affiliation: Aix Marseille Université, CNRS, Centrale Marseille, IRPHE UMR 7342, 13384, Marseille, France.
authors.forename: O
authors.initials: O
authors.lastname: Kimmoun
authors.affiliation: Aix Marseille Université, CNRS, Centrale Marseille, IRPHE UMR 7342, 13384, Marseille, France.
authors.forename: H
authors.initials: H
authors.lastname: Branger
authors.affiliation: Aix Marseille Université, CNRS, Centrale Marseille, IRPHE UMR 7342, 13384, Marseille, France.
authors.forename: C
authors.initials: C
authors.lastname: Kharif
authors.affiliation: Department of Mechanical Engineering, Imperial College London, London SW7 2AZ, United Kingdom and Dynamics Group, Hamburg University of Technology, 21073 Hamburg, Germany.
authors.forename: N
authors.initials: N
authors.lastname: Hoffmann
authors.affiliation: Dipartimento di Fisica, Università degli Studi di Torino, Torino 10125, Italy and Istituto Nazionale di Fisica Nucleare, INFN, Sezione di Torino, 10125 Torino, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Onorato
authors.affiliation: Optical Sciences Group, Research School of Physics and Engineering, Institute of Advanced Studies, The Australian National University, Canberra ACT 0200, Australia.
authors.forename: N
authors.initials: N
authors.lastname: Akhmediev