Survey Size: 25,150 miles Flight Lines: East-West, ½- to 1-mile spacing Tie Lines: North-South, 5-mile spacing Elevation: 2,500 feet barometric Instrumentation: Geometrics G-803 magnetometer, 0.1 gamma Date Flown: April to September, 1983 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)
Processing: Pearson, deRidder and Johnson, Inc. of Lakewood, Colorado Survey Size: 11,490 miles Flight Lines: East-West, ½-mile spacing Tie Lines: North-South, ½-mile spacing Elevation: 300 feet above mean terrain Instrumentation: High-sensitivity, optically pumped Cesium Vapor magnetometer with 0.25-second sampling Date Flown: 1987 Data Provided: Total Magnetic Intensity (IRGF removed) contour map Flight Path Map Reduced-To-Pole
Survey Size: 5,154 miles Flight Lines: East-West, ½-mile spacing Tie Lines: North-South, 1-mile spacing Elevation: 500 feet above ground level Instrumentation: High-sensitivity, optically pumped magnetometer Date Flown: 1999 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)
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: 13,475 miles Flight Lines: N45°E,⅛-mi spacing; N45°W,¼-mi spacing Elevation: 300 & 500 feet above terrain Date Flown: 5/1/87 to 5/24/87 (Fill-in and Shoshone Range extension, 8/25/93 to 1/7/94) 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
