Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
Winston-SalemM-Dz609.6 m (barometer)1.61 km8,208 km
Mt. RogersM-Dz1828.8 m (barometer)0.80 km811 km
Southwest VirginiaM-Dz1524 m (barometer)2.41 km4,828 km
Southwest PiedmontM-Dz152.4 m above ground0.80 km5,794 km
Winston SalemM/R-D121.92 m 4.83 km5,123 km