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 NorthM-Dz1067 m (barometer)1.60 km3,299 km
N. Great Valley SouthM-Dz762 m (barometer)1.60 km9,253 km
California CascadesM-D2743 m (barometer)1.60 km21,726 km
ChicoM/R-D121.9 m 4.80 km4,869 km
ChicoSouthM-D244 m above ground0.80 km km
Sacramento 2011M-D244 m above ground0.80 km km
SusanvilleM/R-D121.9 m 9.60 km2,644 km
UkiahM/R-D121.9 m 9.60 km2,441 km