Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
SE Alaska (Granite Fiords)M-Dz1830 m (barometer)1.60 km2,735 km
Ketchikan '76M-Dz1830 m (barometer)1.60 km8,529 km
Petersburg '78M-D304.8 m above ground1.60 km13,920 km
Craig 1982M-D304.8 m above ground0.80 km9,221 km
Annette IslandM-D60 m above ground0.40 km997 km
Bradfield CanalM/R-D121.9 m 9.60 km716 km
Craig AKM/R-D121.9 m 9.60 km1,496 km
Ketchikan 1999M/EM-D30 m above ground0.40 km4,751 km
KetchikanM/R-D121.9 m 9.60 km1,609 km
Prince RupertM/R-D121.9 m 9.60 km185 km