Field monitoring and surveys

Field monitoring

The Research Unit of SDGEE has a long experience in field testing and is fully equipped to perform high quality seismic, geotechnical and geophysical surveys and tests, such as:

  • Refraction, Reflection
  • Spectral analysis of surface Waves (SASW)
  • Surface Wave Inversion (SWI)
  • Multichannel Analysis of Surface Waves (MASW)
  • Cross-hole (CH) measurements
  • Down-hole (DH) measurements
  • Array Microtremor measurements (Spatial Autocorellation Coefficient -SPAC, linear and arbitrary configu­rations)
  • Horizontal to Vertical Spectral Ratio-HVSR
  • Classical Spectral Ratio-SSR
  • Generalized Inversion method-GIS
  • Strong ground motion monitoring
  • Structure health monitoring and system identification

Equipment for field surveys:

  • Surface surveys (Refraction, reflection, SASW, MASW, microtremor measurements, site response esti­mates, structural monitoring of critical buildings, bridges, monuments, etc.)

  • Borehole surveys (Down-hole and Cross-hole)


  • Strong ground motion monitoring (Recording of seismic activity, earthquake early warning, etc.)


Field surveys/examples:

  • Refraction survey


  • 2D & 3D geological-geophysical models. The case of EUROSEISTEST


  • Microtremor measurements


  • Down-hole and Cross-hole surveys


  • Multichannel Analysis of Surface Waves


  • Site response surveys (HVSR, SSR, GIS)


  • Site response surveys (HVSR, SSR, GIS)

Selected projects:

Selected publications:
• Raptakis D, Chávez-García FJ, Makra K, Pitilakis K, 2000. Site effects at Euroseistest Part I. Determination of the valley structure and confrontation of observations with 1D analysis, Soil Dyn. & Earthq. Eng., 19:1-22.
• Manakou M, Raptakis D, Chavez-Garcia FJ, Apostolidis P, Pitilakis K, 2010. 3D soil structure of the Mygdonian basin for site response analysis. Soil Dyn. & Earthq. Eng., 30: 1198-1211.