Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
GreensboroM/R-D121.92 m 4.83 km5,123 km
North-central N.C.M-D152.4 m above ground1.61 km10,029 km
RoanokeM/R-D121.92 m 9.66 km2,784 km
Milton-RoxboroM-Dz121.92 m above ground0.80 km4,688 km
South-central PiedmontM-Dz152.4 m above ground0.80 km10,622 km
Roanoke Quad.M-Dz152.4 m above ground0.80 km11,265 km
S.-cent. Piedmont Rad (R5)M/R-D152.4 m above ground0.80 km4,506 km
Southern Piedmont Rad (R7)M/R-D152.4 m above ground0.80 km3,219 km