Aeroradiometric Surveys of North America

Data generated by aerial sensing of radiation emanating from the earth's surface provides general estimates of the geographic distribution of Uranium, Thorium, and Potassium in surficial and bedrock units. Covers the conterminous United States, southeastern Canada, and most of Alaska, but there are gaps in northern Québec, western Canada, and north central Alaska

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North America	NURE surveys

Show in your GIS using OGC WMS:

http://mrdata.usgs.gov/services/aerorad?request=GetCapabilities&service=WMS&version=1.1.1

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TIFF image	dimensions	size	TFW	Thumbnail	Geosoft Grid
Color composite	5823 x 2371	40M	tfw	PNG, 111kb	(unavailable)
Potassium	5828 x 2444	41M	tfw	PNG, 66kb	NAMrad_K.grd NAMrad_K.grd.gi
Thorium	5865 x 2480	42M	tfw	PNG, 66kb	NAMrad_Th.grd NAMrad_Th.grd.gi
Uranium	5868 x 2432	41M	tfw	PNG, 66kb	NAMrad_U.grd NAMrad_U.grd.gi
Absorbed dose	5839 x 2456	41M	tfw	PNG, 66kb	NAMrad_exp.grd NAMrad_exp.grd.gi

Additional downloadable data files are available from the original publication

Documentation:

Metadata:: [Outline] - [Questions & Answers] - [Plain text]

Publication:

USGS Open-File Report 2005-1413: Terrestrial Radioactivity and Gamma-ray Exposure in the United States and Canada

The national compilation, including United States, southeastern Canada, and most of Alaska, with gaps in northern Québec, western Canada, and north central Alaska
http://pubs.usgs.gov/of/2005/1413/
USGS Open-File Report 2009-1129: Aeromagnetic and aeroradiometric data for the conterminous United States and Alaska from the National Uranium Resource Evaluation (NURE) program of the U.S. Department of Energy

Flight-line data from the original surveys available for each 1°x2° map quadrangle, used in creating the national compilation
http://pubs.usgs.gov/of/2009/1129/

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