Geophysical Survey
We use seismic and resistivity methods to reveal subsurface conditions—ideal for site selection and hazard mapping.
Purpose: Characterize subsurface conditions using electrical and seismic methods.
Seismic Refraction Survey – Measures subsurface layer velocities to determine depth and composition
Microtremor Survey (HVSR Method) – Assesses site response and natural frequency using ambient ground vibrations
Electrical Resistivity Survey (ERT) – Maps subsurface resistivity variations to identify soil, rock, and groundwater features
Ground Penetrating Radar (GPR) – Uses radar pulses to image shallow subsurface structures and utilities
Electromagnetic (EM) Survey – Detects conductivity anomalies for groundwater, mineral, or contamination studies
Crosshole Seismic Test (CHT) – Measures shear wave velocity between boreholes for detailed soil stiffness profiling
Downhole Seismic Test – Evaluates seismic wave velocities at various depths from a single borehole