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Southern National Petroleum Reserve-Alaska Geophysical Survey

The Southern NPRA electromagnetic and magnetic airborne geophysical survey is located in northwest Alaska in the southern National Petroleum Reserve-Alaska, about 320 kilometers south of City of Utqiagvik. Frequency domain electromagnetic and magnetic data were collected with the DIGHEMV system from July to August 2005. A total of 11,115 line kilometers were collected covering 3,947.9 square kilometers. Line spacing was 400 meters (m) and 200 m over the Drenchwater area. Data were collected with an average ground clearance of 35 m from a helicopter towed sensor platform ("bird") on a 30-m-long line.

Available Data Metadata Overview
File Name Data File Format File Size Info
Download southernnpra_2005_vector_data Vector data 1.5 G Read me
Download southernnpra_2005_maps_prn_format Plot files 303.2 M Read me
Download southernnpra_2005_databases_geosoft Linedata Geosoft format database 256.1 M Read me
Download southernnpra_2005_images_registered Image files 120.7 M Read me
Download southernnpra_2005_grids_geosoft Gridded data Geosoft format 329.9 M Read me
Download southernnpra_2005_grids_ermapper Gridded data ER Mapper 358.9 M Read me
Download southernnpra_2005_kmz Google Earth files 146.1 M Read me
Download southernnpra_2005_documents Adobe PDF files 12.2 M Read me
Download southernnpra_2005_maps_pdf_format Adobe PDF files 238.3 M Read me
Download southernnpra_2005_profiles_stacked Adobe PDF files 216.1 M Read me
Download southernnpra_2005_ascii_data ASCII tabular files 837.1 M Read me


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