Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
BismarckM/R-D121.92 m 9.66 km2,525 km
DickinsonM/R-D121.92 m 4.83 km4,183 km
South-central North DakotaM-D1066.8 m (barometer)4.83 km2,784 km