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S02 / AIRBORNE EM RESISTIVITY · LITHOLOGICAL & SALINE INTRUSION MAPPING

Airborne EM Resistivity

Time-domain and frequency-domain electromagnetic surveys for lithological discrimination, conductive ore body detection, saline intrusion mapping, and shallow groundwater delineation.

TDEM / FDEMConductive Ore BodiesSaline Intrusion3D Inversion
TECHNICAL OVERVIEW

Resistivity as a Window into the Subsurface

Electromagnetic surveys measure how the earth conducts induced currents — and conductivity is the most direct geophysical proxy for what matters: water content, sulphide concentration, salinity, and clay alteration. Air Solutions delivers both time-domain (TDEM) and frequency-domain (FDEM) airborne EM systems, matched to depth and target.

TDEM penetrates to 400m+ for deep VMS and aquifer targets; FDEM excels at near-surface mapping for environmental and infrastructure work. Both produce 3D resistivity models through full-waveform inversion, calibrated against ground reference stations and existing borehole logs.

Standard outputs include conductivity-depth images, 3D inversion volumes, and target-anomaly ranking maps — all delivered in formats compatible with standard 3D modeling and GIS platforms.

Applications

VMS & Massive Sulphide Detection
Saltwater Intrusion Mapping
Lithology Discrimination
Shallow Aquifer Delineation
Tailings Storage Characterization
Buried Conductor Mapping
SYSTEM SPECIFICATIONS
TDEM Depth400m+
FDEM Depth100–150m
Frequency Range25 Hz – 25 kHz
Survey Altitude30–60m AGL
Line Spacing50–200m
Vertical Resolution≤5% of depth
Inversion EngineFull-waveform 3D inversion
Output FormatASEG-GDF2 / VTK
DELIVERABLES
Apparent resistivity grids
Conductivity-depth sections
3D inversion VTK volumes
Target anomaly ranking
Calibration & QC report
ASEG-GDF2 raw data archive
NEXT STEP · REQUEST EM SURVEY DESIGN

Resolve the Subsurface Before You Drill

Share your concession and target type — we'll specify TDEM or FDEM, line spacing, and a delivery schedule within 48 hours.

Request EM Survey