Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
Grass Valley--Nevada CityM-Dz1067 m (barometer)0.80 km828 km
North Sierra FoothillsM-D304.8 m above ground0.80 km8,481 km
Sierra Nevada '80M-D304.8 m above ground0.80 km6,035 km
N. Great Valley SouthM-Dz762 m (barometer)1.60 km9,253 km
ChicoM/R-D121.9 m 4.80 km4,869 km
SacramentoM/R-D121.9 m 4.80 km5,005 km
Sacramento 2011M-D244 m above ground0.80 km km