Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
Elk River ARMSM-A152.4 m above ground1.60 km16,093 km
SwiftM-Dz304.8 m above ground1.60 km14,162 km
West-central surveysM-D150 m above ground0.40 km82,000 km
Southwestern surveysM-D200 m above ground0.50 km81,000 km
Southeastern surveys part 1M-D200 m above ground0.50 km km
New UlmM/R-D121.9 m 4.80 km4,586 km
St CloudM/R-D121.9 m 4.80 km4,473 km