Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
Mother Lode '51M-Dz304.8 m above ground0.80 km4,224 km
San Francisco ARMS '58M-Dz152.4 m above ground1.60 km3,540 km
Mother Lode NorthM-Dz304.8 m above ground0.80 km3,669 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
North Sierra FoothillsM-D304.8 m above ground0.80 km8,481 km
LivermoreM-D304.8 m above ground0.53 km7,724 km
N. Great Valley SouthM-Dz762 m (barometer)1.60 km9,253 km
SacramentoM/R-D121.9 m 4.80 km5,005 km
Sacramento 2011M-D244 m above ground0.80 km km
San JoseM/R-D121.9 m 4.80 km5,182 km