Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
Petersburg '78M-D304.8 m above ground1.60 km13,920 km
Northwest CraigM-D304.8 m above ground1.60 km1,013 km
Southeastern AlaskaM-D121.9 m above ground9.60 km12,364 km
Craig AKM/R-D121.9 m 9.60 km1,496 km
Stikine - Duncan CanalM/EM-D30 m above ground0.40 km5,489 km
PetersburgM/R-D121.9 m 9.60 km1,472 km
Port AlexanderM/R-D121.9 m 9.60 km514 km
SitkaM/R-D121.9 m 9.60 km579 km
SumdumM/R-D121.9 m 9.60 km426 km