Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
San Francisco ARMS '58M-Dz152.4 m above ground1.60 km3,540 km
Sierra Nevada '63 WestM-Dz762 m (barometer)1.60 km2,068 km
San Jose '89-'90M-D152.4 m above ground0.40 km6,570 km
San Francisco '73M-D914.4 m (barometer)1.60 km11,909 km
South Sierra FoothillsM-D304.8 m above ground0.80 km8,513 km
Central Sierra NevadaM-Dz152.4 m above ground0.60 km7,378 km
Gabilan High LinesM-D2000 m (barometer)4.80 km193 km
San JoseM/R-D121.9 m 4.80 km5,182 km