Methods
The HGI trusted Methods
Electrical Resistivity
HGI specializes in electrical resistivity surveys for various applications, providing rapid, non-intrusive 2D, 3D, and 4D images of the subsurface.
Seismic
HGI has over 20 years of experience using seismic survey methods, such as seismic refraction, reflection, and MASW, to investigate geological, geotechnical, and hydrogeological projects.
Ground Penetrating Radar
Ground Penetrating Radar (GPR) is a high-resolution technique using electromagnetic waves to image shallow soil and ground structures.
Magnetic
Magnetometry, the study of Earth’s magnetic field, is used to characterize subsurface conditions through non-intrusive means by detecting local magnetic anomalies.
Electromagnetic
Electromagnetic survey methods enable the measurement of electric or magnetic field components induced in the subsurface and are sensitive to variations in subsurface electrical properties.
Airborne Electromagnetic (AEM)
Airborne electromagnetic method (AEM) offers a quick evaluation of geological conditions based on electrical conductivity or resistivity.
Gravity
The gravity method offers inexpensive and non-invasive insights into subsurface geology by measuring differences in gravity forces exerted by various earth materials.
Induced Polarization-IP
Induced polarization (IP) is a versatile technique that quantifies the charge storage capacity of earth materials, with applications in hydrogeophysics and biogeophysics.
Magnetotellurics
Magnetotellurics (MT) is a geophysical method that measures natural electric and magnetic field variations to determine subsurface electrical properties, with applications in natural resource exploration.