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Shock Modon: A New Type of Coherent Structure in Rotating Shallow Water
Author(s) -
Noé Lahaye,
Vladimir Zeitlin
Publication year - 2012
Publication title -
physical review letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.688
H-Index - 673
eISSN - 1079-7114
pISSN - 0031-9007
DOI - 10.1103/physrevlett.108.044502
Subject(s) - physics , shock (circulatory) , hydraulic jump , dissipation , shock wave , mechanics , jump , vortex , bow shock (aerodynamics) , rossby number , classical mechanics , turbulence , flow (mathematics) , medicine , quantum mechanics , thermodynamics
International audienceWe show that a new type of coherent structure, a shock modon, exists in a rotating shallow water model at large Rossby numbers. It is a combination of an asymmetric vortex dipole with a stationary hydraulic jump. The structure is long living, despite the energy dissipation by the hydraulic jump, and moving along a circular path. Collisions of shock modons can be elastic, or lead to formation of shock tripoles

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