Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
DyersburgM/R-D121.9 m 4.80 km4,889 km
Bluegrass Area, KY/Pauducah Area, KY/ Hopkinsville Area, KY & TN/ Owensboro Area, KY/ Paradise-Russellville Area, KY & TN/ Louisville, KY/ Burskville-Somerset Area, KY & TN/ Ashland-Hazard Area, KY/ Cincinnatis Area, KYM-D152.4 m above ground1.60 km67,632 km
New Madrid '73M-Dz304.8 m (barometer)1.60 km8,880 km
New Madrid '90M-D91 m above ground0.45 km6,173 km