Aerial Electromagnetic Survey Data from 2005-2006

GSNI GeoIndex Electromagnetics contains airborne geophysical data collected by the British Geological Survey and Finnish GTK in 2005 and 2006. The survey covers 80,458 line kilometers with flight lines spaced 200 meters apart. It records magnetic, electromagnetic, and terrestrial gamma-radiation measurements at varying sample intervals.

Use Cases

• Map subsurface conductivity anomalies using electromagnetic data from the 2005-2006 aerial survey.
• Analyze magnetic field variations across the 80,458 line kilometer survey area for geological mapping.
• Correlate terrestrial gamma-radiation measurements with magnetic data to identify mineral signatures.
• Model flight line data collected at 200-meter spacing to create regional geophysical basemaps.

Strengths

• Substantial spatial coverage of 80,458 line kilometers of survey data.
• Multi-sensor data collection including magnetic, electromagnetic, and gamma-radiation measurements.
• Precise flight parameters documented, including 200-meter line spacing and specific ground clearances.

Limitations

• Data is temporally limited to the 2005-2006 collection period and may not reflect current conditions.
• Sample intervals vary by sensor (7m, 17.5m, 70m), complicating unified spatial analysis.
• Data format is HTML, which is atypical for analytical use and may require significant extraction and conversion.

Provenance

Source

British Geological Survey (BGS) and Finnish Geological Survey (GTK) via the Joint Airborne-geoscience Capability (JAC).

Collection Method

Airborne survey flown with nominal ground clearances of 56m (rural) and 240m (urban), collecting magnetic, electromagnetic, and gamma-radiation data.

Time Range

2005 - 2006

Freshness

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Geography

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