Dualem On-Line Documents

4-m Multiple Array Examples
Introduction, examples and a simulation of surveying with a 4-m DUALEM with multiple arrays.
Updated: 2008-7

Bibliography
A bibliography of papers relevant to DUALEM instruments.
Updated: 2012-07

Conductivity Estimation
Convenient Estimation of Soil Conductivity, Sub-Soil Conductivity and Soil Thickness from Electromagnetic Induction (SSSA 2002 Paper).
Updated: 2002-11

DUALEM YouTube videos
Links to videos found on YouTube about DUALEM instrumentation.
Updated: 2013-04

EM Induction
Electromagnetic Induction: Operation and Interpretation, especially at Low Induction Numbers. Updated: 2003-2

Environmental Mapping
Examples of mapping a groundwater plume and buried drums with DUALEM instruments (SEG 2000 Expanded Abstract).
Updated: 2001-12

Geometric EM
A history of the development and applications of geometric-sounding EM instruments (SEG 1999 Expanded Abstract, with addendum).
Updated: 2003-8

Glossary
A glossary of geophysical terms commonly used with DUALEM instruments.
Updated: 2002-8

Golf Course Mapping
Mapping Golf-Course Features with Electromagnetic Induction (EMI), with Examples from Dublin, OH (ASAE 2004 Presentation).
Updated: 2004-7

GPS Datum Indices
Numeric codes for the Earth Datums useable with the GPS receivers internal to DUALEM instruments.
Updated: 2013-2

Ground Penetrating Radar (GPR) Compatibility
Tests of interference between a DUALEM-1S and a shielded GPR.
Updated: 2006-9

Layering analysis to 10-m Depth
Multi-geometry EM Sounding of a Freshwater Lagoon.
Updated: 2012-05

Metal Detection
DUALEM-1S metal detection and magnetometer compatibility.
Updated: 2004-7

Motorized GPS Surveying
Practical suggestions and some examples of equipment for surveying large areas with a motor vehicle and GPS.
Updated: 2005-11

Septic Field
Monitoring a failed septic field with DUALEM-2 conductivity.
Updated: 2003-02

Serial-port program
Notes about a freeware program for serial-port communication.
Updated: 2013-04

Thickness
Apparent conductivity as an indication of thickness.
Updated: 2005-06

Vertical Sounding
Analysis of conductive layering by vertical sounding.
Updated: 2004-06