The New Gravimetric Network of The Upper Chelif Basin

This paper presents all stages of the gravimetric network of the upper Chelif basin, including its development and data processing. This network consists of twenty six gravimetric stations. The descriptions of the design ; the gravity survey of the network and the gravimetric stations coordinates are given. These gravimetric stations are connected to the Algerian zero order gravimetric network by means of relative gravimetric values. The measurements were performed using a terrestrial LaCoste Romberg D220 gravimeter, with an instrumental accuracy of 1¸tglas. The accuracy of the determination of gravity values at individual stations is about 13 ¸tgals. In order to ensure the uniformity of obtained results and thus avoid having several gravity values at the same station, the network has been compensated. This compensation was performed by the ginning method.