Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
PetersburgM-D304.8 m above ground1.61 km13,921 km
Northwest CraigM-D304.8 m above ground1.61 km1,014 km
Southeastern AlaskaM-D121.92 m above ground9.66 km12,365 km
CraigM/R-D121.92 m 9.66 km1,497 km
PetersburgM/R-D121.92 m 9.66 km1,473 km
Port AlexanderM/R-D121.92 m 9.66 km515 km
SitkaM/R-D121.92 m 9.66 km579 km
SumdumM/R-D121.92 m 9.66 km426 km