Passive seismics

Lennartz seismometers of 5 and 3 components

7 Lennartz 5s three-component (triaxial) seismometers.
1 Lennartz 20s three-component (triaxial) seismometer.
14 SARA digitizers (Sara electronic instruments).

Sara SL07 digitizer, Mark L4C 1Hz geophone and Lennartz triaxial seismometer

Sara SL07 digitizer (Sara electrònic instruments) together with a 1Hz Geòfon Mark L4C (gray) and a 5-second triaxial Lennartz seismometer (blue).

Seismic noise measurement

Seismic soroll measurement using the H/V spectral quocient technique.

Seismic noise measurement device with the matrix technique

View of the seismic soroll measurement device using the array technique.