Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
San Francisco BayM-Dz304.8 m above ground1.60 km1,802 km
San Francisco '73M-D914.4 m (barometer)1.60 km11,909 km
LivermoreM-D304.8 m above ground0.53 km7,724 km
San Francisco Bay '95M-D149.4 m above ground0.53 km5,310 km
Napa ValleyM-D243.8 m above ground0.53 km15,900 km
Coastal California N.M-Dz914.4 m (barometer)1.60 km4,828 km
San FranciscoM/R-D121.9 m 4.80 km1,033 km
Santa RosaM/R-D121.9 m 9.60 km1,646 km