Tidal Gravity Observations along the Atlantic Coast of France With LCR G906

Abstract

Two sites Menesplet (45ß 01' N, 06'E) near Bordeaux and Mordelles (48ß 05' N, 01ß 51' W) near Rennes in France have been occupied in 1997-98 with the LaCoste & Romberg gravimeter G906. The main goal is the study of the tidal loading along the Atlantic coast of France (Francis and Melchior, 1996). We compare the observed residual vectors with the load vectors derived from different oceanic tidal models. In Mordelles which is close to the complex zone between France, Great-Britain and Ireland we observe an improvement using CSR3.0 models compared to the old Schwiderski maps.