Cross-section and instrumentation at the Wildlife site (after Bennett et al. 1984)
In situ and laboratory investigations (Bennett et al. 1984; Haag 1985) showed that the site consisted of a loose silt surface layer down to 2.5 m depth, a loose silty-sand layer between 2.5 m and 6.8 m depth, and a stiff to very stiff silty-clay layer from 6.8 m to about 11.5 m depth. The ground water level was at about 1.5 m below ground surface.
The site is equipped with two accelerometers, SM2 at the ground surface and SM1 below the base of the silty-sand layer (7.5 m depth). Five piezometers (P1 to P5) were placed in this silty-sand layer (all instruments were linked to the same triggering mechanism).