Dualem On-Line Documents
4-m Multiple Array Examples
Introduction, examples and a simulation of surveying with a 4-m DUALEM with multiple arrays.
A bibliography of papers relevant to DUALEM instruments.
Convenient Estimation of Soil Conductivity, Sub-Soil Conductivity and Soil Thickness from Electromagnetic Induction (SSSA 2002 Paper).
DUALEM YouTube videos
Links to videos found on YouTube about DUALEM instrumentation.
Electromagnetic Induction: Operation and Interpretation, especially at Low Induction Numbers. Updated: 2003-2
Examples of mapping a groundwater plume and buried drums with DUALEM instruments (SEG 2000 Expanded Abstract).
A history of the development and applications of geometric-sounding EM instruments (SEG 1999 Expanded Abstract, with addendum).
A glossary of geophysical terms commonly used with DUALEM instruments.
Golf Course Mapping
Mapping Golf-Course Features with Electromagnetic Induction (EMI), with Examples from Dublin, OH (ASAE 2004 Presentation).
GPS Datum Indices
Numeric codes for the Earth Datums useable with the GPS receivers internal to DUALEM instruments.
Ground Penetrating Radar (GPR) Compatibility
Tests of interference between a DUALEM-1S and a shielded GPR.
Layering analysis to 10-m Depth
Multi-geometry EM Sounding of a Freshwater Lagoon.
DUALEM-1S metal detection and magnetometer compatibility.
Motorized GPS Surveying
Practical suggestions and some examples of equipment for surveying large areas with a motor vehicle and GPS.
Monitoring a failed septic field with DUALEM-2 conductivity.
Notes about a freeware program for serial-port communication.
Apparent conductivity as an indication of thickness.
Analysis of conductive layering by vertical sounding.