Survey Size: 34,944 miles Flight Lines: North-South, ½-mile spacing Tie Lines: East-West, ½-mile spacing Elevation: Three blocks, ranging from 2,200 to 2,800 feet barometric Instrumentation: High sensitivity, 0.05 gamma magnetometer Data Provided: Total Magnetic Intensity (IRGF removed) contour map Flight Path Map Reduced-To-Pole of TMI map Vertical Derivative map (optional) Horizontal Gradient (optional) Profiles, on
Survey Size: Michigan Upper Peninsula 32,400 miles Flight Lines: NE-SW, ⅛ mile (200 meters) Tie Lines: NW-SE, 1 mile (1600 meters) Elevation: low level Data Provided: Total Magnetic Intensity (IRGF removed) contour map Flight Path Map Reduced-To-Pole of TMI map Vertical Derivative map (optional) Horizontal Gradient (optional) Profiles, on paper (optional) CD/DVD with Flight Line
Survey Size: 12,100 line miles Flight Lines: East-West, ½-mile spacing Tie Lines: North-South, 6-mile spacing Elevation: 2,000 feet barometric Instrumentation: Geometrics G-813 magnetometer, 0.05 gamma Date Flown: October, 1985, to February, 1986 Data Provided: Total Magnetic Intensity (IGRF removed) contour map Flight Path Map Reduced-To-Pole of TMI map Vertical Derivative map (optional) Horizontal Gradient (optional)
