Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
MarionM/R-D121.9 m 9.60 km2,697 km
Columbus ARMSM-Dz152.4 m above ground1.60 km18,909 km
Northern Ohio WestM-D548.6 m (barometer)2.40 km9,503 km
Northern Ohio EastM-D548.6 m (barometer)3.20 km7,330 km