ABSTRACT
The instrumentation was installed along three lines N(orth), S(outh) and W(est) and consisted of a total of 6 inclinometers, 6 bellow hoses and 18 settlement gauges. The inclinometers and bellow hoses captured
relative ground displacements down to a depth of about 45 m while the settlement gauges captured displacements at ground surface. In order to capture the absolute displacements below ground surface, the data obtained from the bellow hoses and inclinometers (not reaching firm layers) were adjusted in order to fit the displacements at the ground surface, measured with the settlement gauges. The inclinometers at positions 3, 6, 10 and 12 were of an automatic type which made it possible to measure ground displacements with a time interval of 10 minutes.
