Survey Size: 1,064 line miles, 265 square miles Flight Lines: North-South, ½-mile spacing Tie Lines: East-West, ½-mile spacing Elevation: 300 feet mean terrain clearance 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: 23,000 miles Flight Lines: Northeast-Southwest, 4,500 feet spacing Tie Lines: Northwest-Southeast, 5-mile spacing Elevation: 1,300 feet barometric with drape over higher elevations Instrumentation: Geometrics G-813 magnetometer, 0.05 gamma Date Flown: February to May, 1990 Data Provided: Total Magnetic Intensity (IRGF removed) contour map Flight Path Map Reduced-To-Pole of TMI map Vertical Derivative map
Survey Size: 16,600 miles Flight Lines: East-West, ½-mile spacing Tie Lines: North-South, 5-mile spacing Elevation: 6,700 feet barometric Instrumentation: Geometrics G-813 magnetometer, 0.05 gamma Date Flown: 1985, to January, 1986 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: Approximately 8,767 line miles Flight Lines: East-West, ⅛-mile (200 m) Tie Lines: 1-mile, north-south Elevation: Approximately 500 feet, draped Date Flown: 4/3/95 to 9/7/95 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
Survey Size: 2,900 line miles Flight Lines: East-West, 3,000-foot line spacing Tie Lines: North-South, 5-mile line spacing Elevation: 4,000 feet barometric Instrumentation: 0.01 gamma cesium vapor magnetometer Date Flown: November 1990 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,
