A 2026 field study in Haines Junction, Yukon, utilized Spectral Induced Polarization (SIP) measurements to investigate subsurface properties and identify the ice core of a pingo. The Government of Yukon conducted the study using a FUCHS frequency domain instrument, measuring electrical impedance magnitude and phase shift angle across frequencies from 1.46 Hz to 40 kHz. Subsequent drilling confirmed the presence of interbedded ice and clay from 2.4–3.6 m depth and massive ice from 3.6–8.3 m depth.
Use Cases
- Identify subsurface ice cores based on electrical impedance magnitude and phase shift angle patterns.
- Compare SIP analysis results with Electrical Resistivity Tomography (ERT) for subsurface characterization.
- Analyze polarization contributions using the imaginary part of electrical impedance at high frequencies.
- Calculate Resistivity Frequency Effect (RFE) to distinguish ice signatures from other subsurface layers.
- Validate geophysical models with direct drilling confirmation data from specific depth intervals.
Strengths
- Includes direct validation from drilling, confirming ice presence at depths of 2.4–3.6 m and 3.6–8.3 m.
- Uses a FUCHS frequency domain instrument for SIP measurements across a defined frequency range (1.46 Hz–40 kHz).
- Analysis employs specific metrics like Resistivity Frequency Effect (RFE) equation for pattern identification.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data may reflect geographic bias inherent to a single case study in Haines Junction, Yukon.
Provenance
- Source
- Government of Yukon | Gouvernement du Yukon
- Collection Method
- Field study using Spectral Induced Polarization (SIP) measurements.
- Freshness
- Last updated 2026-04-17 15:52:15.798606; freshness should be verified.
- Geography
- Haines Junction, Yukon, Canada