At Geolanel SAS we understand the precision of the SPAC (Spectral Analysis of Surface Waves) method, which is an advanced technique of applied geophysics that revolutionizes soil characterization. SPAC is based on the detailed analysis of surface waves generated naturally or induced by controlled sources, using multiple receivers strategically placed on the ground surface. This innovative method allows determining the dynamic characteristics of the soil at different depths by means of the spectral evaluation of surface waves.

​

In geotechnical engineering, SPAC provides accurate surface wave velocity and attenuation profiles, which are essential for understanding the seismic response of the ground and assessing structural stability. These data allow the identification of geological layers, the assessment of seismic risk, and the design of foundations and structures that are resistant and safe against dynamic loads.