Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
New Madrid '75 (Jonesboro)M-Dz304.8 m (barometer)1.60 km7,628 km
MemphisM/R-D121.9 m 9.60 km2,951 km
New Madrid '90M-D91 m above ground0.45 km6,173 km