Knowledge base

1.Principle of High-Density Electrical Resistivity Survey High-density apparent resistivity method is an array-based exploration technique, also known as an automatic apparent resistivity system. It evolved from direct current (DC) resistivity methods and combines the functionalities of four-electrode sounding and electrical…

Keywords Integration Electrical Resistivity Tomography, ERT, Time-Domain Induced Polarisation (TDIP/IP) 1.Core Principles and Technical Characteristics 1.1 Electrical Resistivity Tomography (ERT) Target property: Electrical resistivity ρ(Ω·m) Technical sensitivity: 1.2 Time-Domain Induced Polarisation (TDIP/IP) Target property: Apparent chargeability mₐ(mV/V) Technical sensitivity: 2.Data…

VES Definition Vertical Electrical Sounding (VES), also known as Electrical Resistivity Sounding, is a geophysical exploration method used to determine the vertical variation of subsurface resistivity by gradually increasing the electrode spacing. It is particularly effective for mapping layered geological…

Introduction to Subsurface Imaging Techniques The high-density resistivity method operates on identical principles to conventional DC resistivity methods, utilizing artificial current-induced electric field variations to detect geological anomalies through resistivity contrasts in underground media. Key factors affecting resistivity measurements include…

​I.  Understand the formation of groundwater, understand the local topography and landforms, and look at the mountain shape and terrain 1. There are three main aspects of groundwater The first is the source of water supply, such as rainfall, rainfall…