Hydraulic theory of sea straits applied to the onset of the Messinian Salinity Crisis

► First systematic application of hydraulic-control theory to onset of Messinian Salinity Crisis. ► Includes explanation of the concept of hydraulic control aimed at non-specialists. ► Estimated are strait width and depth required to have the basin reach gypsum saturation. ► Response of basin salinity to temporal variation in strait depth is assessed. ► Gradual change in strait depth expected to lead to event-like geological expression.