Welcome to Geotech!
Knowledge base
What is ATEM Systems？How does it work？
TIPS：Airborne Transient Electromagnetic (ATEM) methods are reshaping exploration in complex terrains. This guide breaks down Airborne Transient Electromagnetic principles, compares helicopter TEM systems like VTEM and SkyTEM, and explains data processing workflows. Whether you are sourcing airborne electromagnetic equipment or…
Resistivity Meter Price: 2026 Buyer’s Guide
TIPS：Resistivity meter prices range from $150 for basic DIY kits to over $60,000 for industry-leading multi-channel systems. The cost of a resistivity meter depends on channel count, maximum depth, IP capability, and software integration. Entry-level single-channel units typically cost $2,000–$5,000.…
Electrical Resistivity Tomography: A Complete Technical Guide
TIPS：Electrical Resistivity Tomography (ERT) is a non-invasive geophysical technique that maps subsurface resistivity by injecting direct current through electrode arrays. This technical guide explains how an ERT System works—from Ohm’s Law fundamentals and electrode configurations to 2D/3D data inversion—helping geophysicists…
ERT vs TEM: Which Geophysical Method Fits Your Project?
TIPS：Cross-hole Electrical Resistivity Tomography (ERT) and Transient Electromagnetic Method (TEM) are two complementary geophysical techniques for hydrogeological surveys. This technical guide compares how ERT System delivers high-resolution near-surface imaging while TEM achieves deep penetration for groundwater detection. Learn which method…
What Is Electrical Resistivity Tomography? A Complete Guide for Beginners
TIPS：Electrical Resistivity Tomography (ERT) is a powerful geophysical imaging technique that maps subsurface structures by measuring electrical resistance. This guide explains how an ERT System operates, from current injection to 2D/3D visualization, helping beginners understand Electrical Resistivity Tomography fundamentals and…