Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
New Madrid '73M-Dz304.8 m (barometer)1.61 km8,880 km
Piedmont AreaM-Dz152.4 m above ground0.40 km6,437 km
Cape GirardeauM-D304.8 m above ground1.61 km4,828 km
South Missouri Ground MagM-Dzground m at ground level1.61 km km
Poplar BluffM/R-D121.92 m 4.83 km4,889 km
RollaM/R-D121.92 m 9.66 km2,567 km