Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
BaltimoreM/R-D121.92 m 4.83 km4,250 km
Baltimore GneissM-Dz152.4 m above ground0.80 km3,307 km
Maryland Coop '68M-Dz121.92 m above ground0.80 km3,948 km
Maryland Coop '71M-Dz365.76 m (barometer)1.61 km4,566 km
Ft. Belvoir ARMSM-Dz152.4 m above ground1.61 km14,040 km
WashingtonM/R-D121.92 m 4.83 km3,824 km