Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
Elk River ARMSM-A152.4 m above ground1.60 km16,093 km
Southeastern surveys part 2M-D200 m above ground0.50 km km
Twin CitiesM-D150 m above ground1.60 km2,500 km
StillwaterM/R-D121.9 m 9.60 km2,315 km
St PaulM/R-D121.9 m 9.60 km2,348 km
Northern Wisconsin '96M/V-D152.4 m above ground0.80 km10,780 km