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What is Continuous Resistivity Profiling?
Continuous Resistivity Profiling (CRP) is an efficient geophysical method for obtaining subsurface resistivity distribution through continuous movement of electrode arrays. Compared to traditional static resistivity methods (e.g., ERT), its core innovations include: Scientific Principle: A towed electrode array (5-10 m spacing)…
What is 2D/3D ERT Surveys?
Electrical Resistivity Tomography (ERT) is a geophysical method that maps subsurface resistivity variations caused by differences in rock/soil conductivity. By injecting electrical currents and measuring potential gradients, ERT reconstructs 2D/3D resistivity models with breakthrough advantages: Technological Leap: Modern High-Density Resistivity Systems achieve…
What is an Electromagnetic Locator? Principles, Methods, and Applications in Geophysical Exploration
1. Definition and Principles of Electromagnetic Locators An electromagnetic locator is a geophysical tool that identifies subsurface targets by analyzing electrical property contrasts and electromagnetic field propagation Key methods include: 2. 2D vs. 3D Resistivity Imaging 3. Applications and Case…
What is EM Resistivity: Principles, 2D/3D Imaging Methods
1. Definition and Principles of EM Resistivity EM Resistivity refers to geophysical techniques that analyze subsurface resistivity distribution by injecting electrical currents or electromagnetic fields and measuring ground responses. Key methods include: 2. Comparison of 2D and 3D Resistivity Imaging…
Introduction to Electrical Resistivity Tomography (ERT) and Time-Domain Induced Polarisation(TDIP or IP)
Comparative Analysis of Geophysical Survey Technologies Technical Attributes Electrical Resistivity Tomography (ERT) Time-Domain Induced Polarization (TDIP/IP) Core Property Parameters Resistivity ρ (Ω·m)Measures material’s resistance to electric current Chargeability ma (mV/V)Quantifies polarization energy storage capacity Sensitivity Indicators Moisture/fluid content, porosity, salinity, lithology…