Electrical Resistivity

What is Electrical Resistivity?

Electrical Resistivity Survey is a geophysical method used to map underground conditions by measuring how the ground resists electrical current. In Malaysia, this method is widely used to detect groundwater, identify bedrock depth, and locate soft soil zones or voids.

It is a non-invasive and cost-effective tool for site investigation, especially for construction, slope assessment, landfill studies, and environmental monitoring.

At Geotechnica, we provide electrical resistivity services in Malaysia using modern equipment and expert interpretation helping engineers and planners make safer, data-driven decisions.

Our Services

Electrical Resistivity

Archaeology

Electrical resistivity is used in archaeology to detect buried features like walls, graves, and ancient structures without excavation.

Identifying Soil Disturbances
Mapping Hidden Ruins / Artifacts
Supporting Non-Destructive Cultural Heritage Studies

Subsurface Mapping

Resistivity surveys help map underground layers, faults, and anomalies to understand ground conditions before construction or drilling.

Bedrock Depth Estimation
Soil & Rock Layer Profiling
Detecting Faults & Subsurface Voids

Mineral Exploration

Used to locate zones of mineralization by detecting resistivity contrasts in rock and soil related to ore bodies.

Identifying Alteration Zones
Resistivity Mapping of Mineral Zones
Supporting Target Selection for Drilling

Groundwater Detection

Electrical resistivity helps locate groundwater sources, aquifer depth, and water-bearing zones in both shallow and deep settings.

Well Siting Support
Aquifer Boundary Mapping
Locating Freshwater vs Saline Water

Environmental Studies

Used to assess soil contamination, leachate movement, and landfill boundaries for environmental monitoring and cleanup.

Monitoring Industrial Waste Impact
Mapping Contaminant Plumes
Identifying Landfill Extent & Seepage

Landslide & Slope Analysis

Resistivity surveys help assess slope stability by detecting water saturation, weak layers, and slip surfaces beneath slopes.

Locating Potential Slip Zones
Identifying Saturated/Soft soils
Supporting Landslide Hazard Mapping

Case Studies

Electrical Resistivity Case Studies

Hazard and Risk Slope Assessment (Penilaian Bahaya dan Risiko Cerun)

Rock Slope Mapping (RSM) – Pemetaan Cerun Batuan

Soil Environmental Sustainability by Geotechnica

Tools & Software

Electrical Resistivity Tech & Tools

Industries

Industries We Work

Oil & Gas

Maps pipeline corridors and monitors terrain for safe infrastructure planning.

Mine & Quarry

Generates 3D terrain models for volume calculations, pit monitoring, and site planning.

Civil Infrastructure

Supports road, rail, and bridge design with precise elevation and surface data.

Utilities Powerlines

Inspects powerline corridors & detects vegetation encroachment for safety.

Forest & Plantation

Measures canopy height, tree density, and biomass for resource management.

Environmental & Coastal

Monitors coastal erosion, flood zones, and conducts environmental impact studies.

Why Us

Why Choose Geotechnica

High End Equipment

We are euipped with latest and high-end LiDAR equipment and software to get 100% accuracy of data & statistics

National Level Project

Since 2020, we had handled 20+ state and national-level projects through LiDAR in geotechnical and geo engineering

Certified Engineers & Surveyors

Our engineers & surveyors are international and local graduate with numbers of experience in geo engineering

Custom Report & GIS Integration

You will received 100% accurate reporting documents and able to get GIS integration needed from our team

FAQ

Electrical Resistivity FAQ

What is electrical resistivity survey?

An electrical resistivity survey is a geophysical method that measures how the ground resists electric current to map underground layers or features.

What is the electrical resistivity method used for?

It is used for subsurface mapping, groundwater detection, bedrock profiling, contamination studies, and slope analysis without the need for drilling.

Is electrical resistivity a non-invasive method?

Yes, it is a non-invasive and cost-effective method that does not damage the site and is suitable for construction, environmental, and archaeological work.

How accurate is an electrical resistivity survey in Malaysia?

When done correctly, it provides reliable results about subsurface conditions up to tens of meters deep—ideal for tropical soils and diverse terrains in Malaysia.

Can resistivity surveys detect groundwater?

Yes, electrical resistivity is commonly used to locate groundwater zones, aquifers, and freshwater–saline water boundaries.

What industries benefit from electrical resistivity?

It is widely used in construction, mining, environmental consulting, agriculture, slope hazard assessment, and utility planning.

What is the difference between ERT and soil resistivity test?

ERT (Electrical Resistivity Tomography) maps underground layers in 2D/3D, while a soil resistivity test usually checks surface soil resistance for grounding systems.

How long does an electrical resistivity survey take?

Depending on site size, it typically takes a few hours to a day for fieldwork, followed by 1–3 days for data processing and interpretation.

Do I need an electrical resistivity survey before construction?

Yes, especially for large or sensitive projects, it helps identify soft soils, rock depth, or groundwater issues that affect foundation design.

Why choose Geotechnica for electrical resistivity in Malaysia?

Geotechnica offers expert interpretation, modern ERT equipment, and reliable geophysical services tailored for Malaysian ground conditions and project needs.

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Electrical Resistivity Gallery

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Email: admin@geotechnica.com.my