(1) “The Deltas of southern Europe are intensively cultivated areas, comparable in this respect with the Polders of NW Europe. (…) They are open landscapes with concentrations of rural and urban development. It is a young landscape. “The layout of the land is therefore quite regular. Patterns of rectangular fields alternate in form and orientation.” Ex.: Les Landes and Languedoc-Rous-sillon (FR), Po valley (IT Emilia Romagna, Lombardia), Ebro valley (ES), PT (Tejo, Douro). 

(2) Fan-shaped alluvial deposit of sediment at the mouth of a river.

Source: (1) MEEUS et al. (1990), p. 313. (2) EVERT (2004), p. 148.