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Downloads

A. Final Reports

1. USGS Alaska Aeromag 2008 Operational Report.pdf
2. Explanatory Text of Operational Report.pdf
3. USGS Alaska Aeromag 2008 Gradient Memo.pdf

B. Aeromagnetic Data

1. Alaska­2008­AeromagData.txtThis download will potentially be slow to complete. (870 MB)
2. Alaska­2008­AeromagData­ReadMe.txt
3. Alaska-2008-AeromagGradientData.txtThis download will potentially be slow to complete. (981 MB)
4. Alaska-2008-AeromagGradientData-ReadMe.txt

C. Aeromagnetic Grids

1. Alaska­2008­AeromagMap.gxf
2. Alaska­2008­AeromagMap­Uncompressed.gxf
3. Alaska­2008­RadarAltimeterValues.gxf
4. Alaska­2008­RadarAltimeterValues­Uncompressed.gxf
5. Alaska­2008­AeromagGrids­ReadMe.txt

D. Maps

	1:250,000 scale residual total field map with a 20 / 100 nT contour interval and 800 m (0.5 mi) grid interval, Alaska­2008­AeromagMap.jpg (4 MB).
	1:250,000 scale residual total field color relief map with a 20 / 100 nT contour interval and 800 m (0.5 mi) grid interval, Alaska­2008­AeromagMap­Color.jpg (8 MB).
	1:250,000 scale residual total field, 8 km low-pass residual color relief map with a 20 / 100 nT contour interval below -40 nT, 2 / 10 nT contour interval between -40 nT and 40 nT, 20 / 100 nT contour interval above 40 nT and 800 m (0.5 mi) grid interval, Alaska­2008­AeromagMap­8kmResidual.jpg (11 MB).
	1:250,000 scale height above ground radar altimeter color relief map with a 10 / 50 m ( 33 / 165 ft) contour interval and 800 m (0.5 mi) grid interval, Alaska­2008­RadarAltimeterMap.jpg (22 MB).
	1:250,000 scale east-west measured magnetic gradient (3 MAG sensors) color relief map with a 0.02 / 0.1 nT/m contour interval and 800 m (0.5 mi) grid interval, Alaska-2008-East-West_Gradient.jpg (8 MB).
	1:250,000 scale east-west calculated (tail MAG only) magnetic gradient color relief map with a 0.02 / 0.1 nT/m contour interval and 800 m (0.5 mi) grid interval, Alaska-2008-East-West_Gradient_Calculated.jpg (3 MB).
	1:250,000 scale north-south measured magnetic gradient (3 MAG sensors) color relief map with a 0.02 / 0.1 nT/m contour interval and 800 m (0.5 mi) grid interval, Alaska-2008-North-South_Gradient.jpg (7 MB).
	1:250,000 scale north-south calculated (tail MAG only) magnetic gradient color relief map with a 0.02 / 0.1 nT/m contour interval and 800 m (0.5 mi) grid interval, Alaska-2008-North-South_Gradient_Calculated.jpg (3 MB).
	1:250,000 scale measured total magnetic gradient [3 magnetic (MAG) sensors] color relief map with a 0.02 / 0.1 nT/m contour interval and 800 m (0.5 mi) grid interval, Alaska-2008-Total_Gradient.jpg (9 MB).
	1:250,000 scale calculated total (tail MAG only) magnetic gradient color relief map with a 0.02 / 0.1 nT/m contour interval and 800 m (0.5 mi) grid interval, Alaska-2008-Total_Gradient_Calculated.jpg (3 MB).

E. Raw Data

F. Base Magnetometer Data

G. Quality Control (QC) Check Images

H. VideoBrowsing this directory of files may be slow to load.

Digital-camera recordings files are sorted by flight then by line number. There are two files for each photograph.

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