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  2. A digital database and map of magnetic anomaly data for the North American continent, compiled by GSC, USGS, and CRM. The map shows the magnetic structure and evolution of the continent and can be used for various geologic and societal studies.
  3. pubs.usgs.gov

    This digital Magnetic Anomaly database and map for the North American continent is the result of a joint effort by the Geological Survey of Canada (GSC), U.S. Geological Survey (USGS), and Consejo de Recursos Minerales of Mexico (CRM). The database and map represent a substantial upgrade from the previous compilation of Magnetic Anomaly data for North America, now over a decade old (Committee ...
  4. This report presents six gridded data sets for the magnetic anomaly map of North America, derived from aeromagnetic and satellite data. The map shows the magnetic field at 305 m above terrain, with long-wavelength anomalies removed or corrected.
  5. pubs.usgs.gov

    In many cases, examination of magnetic anomalies provides the most expeditious and cost-effective means to accurately map geologic features in the third dimension (depth) at a range of scales. After pioneering the first airborne magnetic survey in 1944, the U.S. Geological Survey (USGS) has collected piecemeal aeromagnetic data for most of the ...
  6. Anomaly lists are presented documenting operational interference to electricity power grids and communication networks in the United States and Canada during magnetic storms. Four of the anomaly lists apply for magnetic storms that occurred in March 1989, August 1972, March 1940, and for various storms 1946-2000; yet another list consists of ...
  7. ngmdb.usgs.gov

    USGS (U.S. Geological Survey) National Geologic Map Database. Check out the A preliminary, full spectrum, magnetic anomaly grid of the United States with improved long wavelengths for studying continental dynamics: a website for distribution of data. Map published by the U.S. Geological Survey .
  8. store.usgs.gov

    USGS Store. Menu. Search. Products. Recreational Passes. 2024 Annual Pass; Annual Senior Pass; Lifetime Senior Pass; Access Pass; Military Passes; NW Forest Pass; Maps. All Products; ... KIT, MAGNETIC ANOMALY MAP NORTH AMERICA. $9.00 Available View/Download Free PDF Attached PDF 1 Attached PDF 2 Add to cart . Go Back. Product Details. Product ...
  9. pubs.usgs.gov

    The accompanying colorful illustrated booklet describes the processing, compilation, and geologic mapping applications of the new digital magnetic anomaly database and map of North America. Printed copies of this map and booklet can be purchased at Information Services, U.S. Geological Survey (1-888-ASK-USGS).
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