1. Mineral Resources
  2. Online Spatial Data
  3. Magnetic anomaly
  4. Aeromagnetic surveys
  5. Minnesota

Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
Central surveysM-D150 m above ground0.40 km55,000 km
West-central surveysM-D150 m above ground0.40 km82,000 km
St CloudM/R-D121.9 m 4.80 km4,473 km