Geoseismic

Geoseismic

MASW

Surface seismic surveys like Multichannel Analysis of Surface Waves (MASW) and Refraction Microtremors (REMI) for determining Vseq according to Technical Standards for constructions in seismic zones.

HVSR

Seismic noise measurements for determining the Horizontal-to-Vertical Spectral Ratio (HVSR) to identify the resonance frequency of a site or structure.

DOWN-HOLE and CROSS-HOLE

Down-hole and cross-hole seismic surveys for determining P and S-wave velocities with reconstruction of local seismic stratigraphy and determination of Vseq.

SEISMIC REFRACTION

Seismic refraction surveys in P and S-waves for determining the geometry and elastomechanical characteristics of investigated soil sections. Processing using tomographic techniques.

Equipment

Instruments for geoseismic services

 

  • PASI GEA 24 seismograph
  • PASI 16S24-N seismograph
  • Seismic cables with connectors for geophones with 5 and 10 m spacing
  • Vertical and horizontal 14 Hz geophones GEOSPACE, SENSOR, and MARK PRODUCTS
  • Vertical and horizontal 4.5 Hz PASI geophones
  • PASI DHTG-100 three-dimensional hole geophone
  • Surface and hole energising systems, both mechanical and explosive
  • 24-bit PASI Gemini2 HVSR acquisition board with 2 Hz geophone