Dualem On-Line Documents

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


Bibliography
Annotated bibliography of applications of geo-conductivity meters. The bibliography contains hundreds of references to published examples.
Updated: 2005-11


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


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


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


Motorized GPS Surveying (html) (pdf)
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


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


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