Titlebook: Shocks, Singularities and Oscillations in Nonlinear Optics and Fluid Mechanics; Ferruccio Colombini,Daniele Del Santo,David Lannes Book 20

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Guy Métivier,Jeffrey Rauchque and spectacular pattern they form on the landscape. The dominantly linear dunes are relict from the Quaternary period when the climate of northern Nigeria was drier. Today, the dunes are found in areas that receive as much as 1000 mm of rainfall per year. The dunes were first recognized on aeria