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Knowledge base
What is Electrical Resistivity Imaging (ERI)?
Core Principles Data Acquisition Technology Parameter Specification Optimization Strategy Current Type DC (0.1-10Hz) / AC (1kHz-1MHz) Frequency-adaptive based on target depth Electrode Spacing 1-20m (surface) Adaptive spacing algorithm Measurement Precision ±0.1mV voltage resolution Quantum tunneling sensors Noise Immunity >80dB SNR…
What is Time-lapse Resistivity Imaging?
In-Depth Analysis of Dynamic Subsurface Monitoring Technology Technical Definition & Core ValueTime-lapse Resistivity Imaging (TRI), known as Time-lapse high-density electrical method, captures dynamic subsurface changes through multi-temporal 3D ERT surveys. Geotech Series achieves 0.01Ω·m resolution 4D modeling via 1024-channel quantum…
What is Cross-hole Resistivity?
In-Depth Analysis of Cross-hole Resistivity Tomography Technical Definition & PrinciplesCross-hole Resistivity Tomography, known as Transpore High Density Electrophysiology, reconstructs 3D resistivity distributions between boreholes using paired electrodes. Geotech’s GeoERT system achieves 0.1m resolution through 512-channel quantum electrode arrays and adaptive…
What is 2D/3D ERT Survey?
In-Depth Analysis of High-Density Resistivity Imaging Technology Technical Definition & Principles2D/3D Electrical Resistivity Tomography (ERT) Survey, known as High-density electrical sounding, utilizes multi-electrode arrays to reconstruct subsurface resistivity models. Geotech’s GeoERT system achieves 0.2m-resolution 3D imaging through 256-channel quantum electrodes…
What is Vertical Electrical Sounding (VES)?
Technical Definition & DevelopmentVertical Electrical Sounding (VES), or 直流电法测深 in geotechnical terminology, is a fundamental geophysical method using four-electrode arrays to measure subsurface resistivity variations. Geotech’s series revolutionizes this approach with 64-channel wireless nodes, enabling 3D electrical resistivity tomography (ERT)…