Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
Clear Lake '72M-Dz1372 m (barometer)1.60 km1,680 km
San Francisco '73M-D914.4 m (barometer)1.60 km11,909 km
LivermoreM-D304.8 m above ground0.53 km7,724 km
Clear Lake '95M-D304.8 m above ground0.45 km10,058 km
Napa ValleyM-D243.8 m above ground0.53 km15,900 km
YorkvilleM-D152.4 m above ground0.80 km5,027 km
Coastal California N.M-Dz914.4 m (barometer)1.60 km4,828 km
Santa RosaM/R-D121.9 m 9.60 km1,646 km