Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
Southeast MarylandM-Dz365.76 m (barometer)1.61 km2,253 km
Ft. Belvoir ARMSM-Dz152.4 m above ground1.61 km14,040 km
DahlgrenM-Dz152.4 m above ground0.80 km3,380 km
WashingtonM/R-D121.92 m 4.83 km3,824 km