Gridded 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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Show in Google Earth or other KML viewer:
radiometric.kmz (Includes U, Th, K, and absorbed dose 1k byte)
Show in your GIS using OGC web services:
Service, version | URL | Capabilities document |
---|---|---|
WMS, version 1.3.0 | https://mrdata.usgs.gov/services/aerorad | Capabilities |
TIFF image | size | TFW | Thumbnail | Geosoft Grid | ArcGIS Grid |
---|---|---|---|---|---|
Color composite | 40M | tfw | PNG, 111kb | (unavailable) | (unavailable) |
Potassium | 41M | tfw | PNG, 66kb | NAMrad_K.grd NAMrad_K.grd.gi |
NAMrad_K.zip |
Thorium | 42M | tfw | PNG, 66kb | NAMrad_Th.grd NAMrad_Th.grd.gi |
NAMrad_Th.zip |
Uranium | 41M | tfw | PNG, 66kb | NAMrad_U.grd NAMrad_U.grd.gi |
NAMrad_U.zip |
Absorbed dose | 41M | tfw | PNG, 66kb | NAMrad_exp.grd NAMrad_exp.grd.gi |
NAMrad_exp.zip |
Additional downloadable data files are available from the original publication
Metadata:
The national compilation, including United States, southeastern Canada, and most of Alaska, with gaps in northern Québec, western Canada, and north central Alaska
Flight-line data from the original surveys available for each 1°x2° map quadrangle, used in creating the national compilation