Service Programs
- Airborne, ground and underwater electromagnetic (EM) application assessments
- Airborne, ground EM/magnetic field surveys, performed or supervised
- Standard ground and airborne EM/magnetic/radiometric data processing
- Advanced EM data processing, inversions and interpretation
- Airborne geophysical data leveling
- EM modeling and algorithm development
- EM mapping, including conductivity, susceptibility, and permittivity imaging
- Interpretation for mineral, oil and gas exploration
- Environmental and engineering applications
- UXO/landmine detection and discrimination
- Training
Geo-EM has released the following programs for sale or license.
1. Programs for airborne time-domain EM systems (AeroTEM, HeliGEOTEM, HoistEM, MegaTEM and VTEM)
- Apparent conductivity and depth (CDI)
- Differential conductivity and depth (DCDI)
- Inversion to a layered model
- Inversion to a smooth model
- Inversion to a sphere model
- B-field from dB/dt data
- Anomaly-picking using either dB/dt or B-field data
- Spatial-domain filters (low pass, high pass, band pass)
- Noise rejection based on singular value decomposition (SVD)
2. Programs for airborne frequency-domain EM (FEM)
- Apparent resistivity and depth
- Differential resistivity and depth
- Inversion to a layered model
- Inversion to a smooth model
- Inversion to a sphere model
- Linear leveling of FEM data
- Nonlinear leveling of FEM data
- Coaxial (CX) FEM data leveling based on leveled coplanar (CP) FEM data
- Anomaly-picking
- Spatial-domain filters (low pass, high pass, band pass)
- Noise rejection based on singular value decomposition (SVD)
3. Programs for airborne geophysical data leveling
- Linear leveling for airborne resistivity, magnetic, gravity, and spectrometer data
- Nonlinear leveling for airborne resistivity, magnetic, gravity, and spectrometer data
4. Programs for near-surface EM
- Anomaly picking from EM-61 MK2 data for UXO surveys
- Anomaly picking from GEM-3 or GEM-5 data for UXO surveys
- UXO/landmine discrimination
- Apparent magnetic susceptibility from FEM data (e.g., GEM-2 or GEM-3)
- Apparent conductivity from FEM or TEM data
- Inversion to a layered model from FEM data (dipole-dipole sensors, e.g., GEM-2)
- Inversion to a smooth model from FEM data (dipole-dipole sensors, e.g., GEM-2)
- Inversion to a sphere model (e.g., GEM-3, GEM-5 or EM63)
- Spatial-domain filters (low pass, high pass, band pass)
- Noise rejection based on singular value decomposition (SVD)
Client-Oriented Software Development
We develop client-orientated software programs for data processing and interpretation as shown below.
1. Time-domain electromagnetic methods
- Computing the B-field response from dB/dt data
- Apparent conductivity-depth imaging (CDI)
- Differential conductivity-depth imaging (DCDI)
- N-layer model forward modeling
- Inversion to N-layer model
- Inversion to smooth model
- Sphere forward modeling
- Inversion to sphere model
- Noise rejection based on singular value decomposition (SVD)
- Anomaly-picking using either dB/dt or B-field data
2. Frequency-domain electromagnetic methods
- Apparent resistivity/conductivity and depth (CDI)
- Apparent quad-quad resistivity
- Differential resistivity/conductivity and depth (DCDI)
- N-layer forward modeling
- Inversion to N-layer model
- Inversion to smooth model
- Sphere forward modeling
- Inversion to sphere model
- EM anomaly-picking
- EM magnetic susceptibility
- EM dielectric permittivity
3. Programs for near-surface EM
- Anomaly-picking
- UXO/landmine discrimination
- Conductivity computation
- Magnetic susceptibility computation
- Inversions
4. Geophysical data leveling programs
- Airborne EM flight-line data
- Flight-line resistivity/conductivity data
- Airborne potential field data
- Grid data
