Asymptotic analysis 4 Asymptotic regimes 4 Asymptotics 4 Dam-breaks 4 Dams 4 Dry region 4 Linear phase 4 Multiphase flow 4 Newtonian liquids 4 Ocean currents 4 Ridge 4 Rift 4 Self-similar 4 Separation 4 Thin viscous sheet 4 Uniform layer 4 Viscosity 4 Viscous dam 4 Viscous sheet model 4