After-sales service

Knowledge base

Geophysical method illustration showing a drone-towed EM system measuring subsurface conductivity, with response profile and 3D depth slice.

What Are Electrical and Electromagnetic Equipment in Geophysical Surveys?

TIPS：This guide compares electrical resistivity survey and electromagnetic geophysical survey methods for modern subsurface exploration. Engineers deploy electrical resistivity survey systems to generate high-resolution 2D and 3D images of groundwater, mineral deposits, and geological hazards. Electromagnetic geophysical survey platforms enable…

A5: High-density resistivity method uses automated switching with hundreds of electrodes. Dense spatial sampling improves resolution. Multi-channel acquisition speeds data collection. Tomographic inversion produces detailed subsurface images. These advances enable practical 3D surveys.

What is Resistivity Imaging Systems?丨ERT Technology Compared

TIPS:Resistivity imaging systems transform how geophysicists map underground structures. This guide compares 2D and 3D electrical resistivity tomography for subsurface exploration projects. You will discover how resistivity imaging systems detect ore bodies, monitor groundwater, and assess infrastructure using modern electrical…

Detailed ERI workflow diagram showing multi-electrode data collection, inversion software, and 3D geological visualization.

What is ERI ?丨Electrical vs Electromagnetic Geophysical Survey

TIPS：Choosing between an electrical geophysical survey and an electromagnetic geophysical survey directly impacts project cost, data quality and interpretive confidence. An electrical geophysical survey injects controlled ground current via electrodes to map subsurface resistivity, delivering high‑resolution near‑surface imaging but requiring…