Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
BaltimoreM/R-D121.9 m 4.80 km4,250 km
Baltimore GneissM-Dz152.4 m above ground0.80 km3,307 km
Maryland Coop '68M-Dz121.9 m above ground0.80 km3,947 km
Maryland Coop '71M-Dz365.7 m (barometer)1.60 km4,565 km
Ft. Belvoir ARMSM-Dz152.4 m above ground1.60 km14,039 km
WashingtonM/R-D121.9 m 4.80 km3,823 km