Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
AuroraM/R-D121.9 m 9.60 km2,666 km
BellevilleM/R-D121.9 m 9.60 km2,761 km
BurlingtonM/R-D121.9 m 9.60 km2,742 km
ChicagoM/R-D121.9 m 9.60 km2,051 km
DanvilleM/R-D121.9 m 9.60 km2,697 km
DavenportM/R-D121.9 m 9.60 km2,666 km
DecaturM/R-D121.9 m 9.60 km2,726 km
DubuqueM/R-D121.9 m 9.60 km2,634 km
DyersburgM/R-D121.9 m 4.80 km4,889 km
Grand RapidsM/R-D121.9 m 9.60 km3,310 km
Northeast IowaM-A304.8 m above ground1.60 km12,713 km
East-central IowaM-A304.8 m above ground1.60 km12,070 km
Southeast IowaM-A304.8 m above ground1.60 km14,886 km
Southern IowaM-A609.6 m (barometer)1.60 km8,545 km
Argonne Joliet ARMSM-Dz152.4 m above ground1.60 km19,312 km
Northwest IllinoisM-D548.6 m (barometer)4.80 km2,341 km
Wabash ValleyM-D152.4 m above ground0.48 km6,115 km
Southwest IllinoisM-Dz914.4 m (barometer)1.60 km11,104 km
Southeast Illinois '77M-D304.8 m above ground1.60 km12,231 km
SW Wisconsin-NW IllinoisM-D609.6 m (barometer)0.80 km7,563 km
IndianapolisM/R-D121.9 m 9.60 km2,726 km
Bluegrass Area, KY/Pauducah Area, KY/ Hopkinsville Area, KY & TN/ Owensboro Area, KY/ Paradise-Russellville Area, KY & TN/ Louisville, KY/ Burskville-Somerset Area, KY & TN/ Ashland-Hazard Area, KY/ Cincinnatis Area, KYM-D152.4 m above ground1.60 km67,632 km
New Madrid '73M-Dz304.8 m (barometer)1.60 km8,880 km
Cape GirardeauM-D304.8 m above ground1.60 km4,828 km
North Missouri Ground MagM-Dz-9999 m at ground level1.60 km km
PaducahM/R-D121.9 m 9.60 km2,566 km
PeoriaM/R-D121.9 m 9.60 km2,697 km
QuincyM/R-D121.9 m 9.60 km2,758 km
RockfordM/R-D121.9 m 9.60 km2,616 km
RollaM/R-D121.9 m 9.60 km2,566 km
SE MissouriM-D110 m above ground0.30 km68,548 km
St LouisM/R-D121.9 m 9.60 km2,806 km
VincennesM/R-D121.9 m 9.60 km2,761 km
Wis.-Ill. Lead-Zinc '48M-Dz548.6 m (barometer)0.40 km4,441 km
Southwest WisconsinM-D304.8 m above ground0.80 km22,128 km
South-central WisconsinM-D304.8 m above ground0.80 km20,921 km
Wisconsin Tie LinesM-D304.8 m above ground0.80 km2,293 km
SE WisconsinM-D304.8 m above ground0.80 km3,741 km