Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
LewistonM/R-D121.92 m 9.66 km2,494 km
New Hampshire WestM-Dz701.04 m (barometer)0.80 km3,943 km
North-central N.H. '66M-Dz1676.4 m (barometer)0.80 km2,897 km
Sherbrooke-Lewiston '81 W.R-D91.44 m above ground0.80 km261 km
Sherbrooke-Lewiston '82M-D152.4 m above ground0.80 km7,152 km
SherbrookeM/R-D121.92 m 9.66 km1,030 km
Vermont RegionalM-Dz1219.2 m (barometer)3.22 km1,191 km