Le réseau urbain suisse et sa hiérarchisation d'après les navettes de travailleurs en 1970.

Abstract

The Swiss urban network and its hierarchy from the commuting of workers. The author makes a comparison between the external recruiting area of the labour in an urban centre to the drainage basin of a river, up-stream a gauging Station recording the hydraulic flow - that is to say the average flow of this river. The author replaces this hydraulic flow by a demographic flow : the total number of the workers coming from the surroundings in comparison to the area of the towns where these labour people are registered gives the density of the average flow of these commutings. So the author calculates the area of the locally recruiting "drainage basin" of the first 100 Swiss towns, making a distinction between the intensive recruiting area, the Helvetian recruiting area and the theoretical foreign recruiting area : Zurich receives nearly 100 000 external workers, Basel and Geneva over 50 000, Bern (40 000), Lausanne 525 000), Lucerne, Baden and Lugano (15 000), Aarau, Biel, Winterthur and Carouge (10 000), etc... Among the first 25 towns (19 with mainly tertiary activities and 6 with mainly secondary activities), 19 have lost inhabitants between december 1970 and January 1980 and 3 others have increased very little this tends to prove the maintenance and even the increasing of these commutings during the years 1971-1980.