Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
BismarckM/R-D121.9 m 9.60 km2,525 km
Mc CluskyM/R-D121.9 m 9.60 km2,341 km
South-central North DakotaM-D1067 m (barometer)4.80 km2,784 km