Capacitively Coupled Resistivity

Capacitively Coupled Resistivity (CCR) is a geophysical method used for rapid mapping of shallow resistivity structure through non-galvanic coupling of alternating electrical current between transmitter and receiver array.

Aurora has two CCR systems:

• Aurora Rapid Reactance Tomography (ARRT)
• OhmMapper™

Both systems operate as a land towed dipole-dipole resisitivity survey, analogous to a dipole-dipole DC resistivity survey and ideal for high resistivity environments and winter-based applications.

Applications range from mineral exploration to geotechnical, including depth to bedrock estimates, permafrost investigation, and utility locates.

OhmMapper™

• Single frequency operation: ~16.5 kHz
• Fixed offset receiver array, up to 5 receivers
• Ideal in urban settings and most barren terrain
• Ideal tool for geotechnical applications

ARRT

• A more ruggedized alternative to the OhmMapperTM, tailored for deeper exploration and more array flexibility
• Multi-frequency operation up to 20 kHz (records full-wave time serires)
• Uses independent transmitter and receiver tracking through onboard GNSS sensors
• Ideal in most barren and some-non-barren terrain and some urban settings
• Ideal tool for mineral exploration applications

*survey scope and terrain dependent
**dependent on electromagnetic skin depth