The Broad Pass electromagnetic and magnetic airborne geophysical survey is located in interior Alaska in the Bonnifield mining district, about 160 kilometers south of Fairbanks, Alaska and about 250 kilometers north of Anchorage, Alaska. Frequency domain electromagnetic and magnetic data were collected with the DIGHEMV system from July to August 2001. A total of 1970.2 line kilometers were collected covering 689.5 square kilometers. Line spacing was 400 meters (m). Data were collected 30 m above the ground surface from a helicopter towed sensor platform ('bird') on a 30 m long line.
| File Name | Data File Format | File Size | Info |
|---|---|---|---|
| Download gpr2020_001_broadpass_2001_vector_data | Vector data | 104.4 M | Read me |
| Download gpr2020_001_broadpass_2001_maps_prn_format | Plot files | 50.7 M | Read me |
| Download gpr2020_001_broadpass_2001_databases_geosoft | Linedata Geosoft format database | 58.2 M | Read me |
| Download gpr2020_001_broadpass_2001_images_registered | Image files | 2.9 M | Read me |
| Download gpr2020_001_broadpass_2001_grids_geosoft | Gridded data Geosoft format | 5.6 M | Read me |
| Download gpr2020_001_broadpass_2001_grids_ermapper | Gridded data ER Mapper | 6.6 M | Read me |
| Download gpr2020_001_broadpass_2001_kmz | Google Earth files | 30.6 M | Read me |
| Download gpr2020_001_broadpass_2001_documents | Adobe PDF files | 1.6 M | Read me |
| Download gpr2020_001_broadpass_2001_maps_pdf_format | Adobe PDF files | 74.5 M | Read me |
| Download gpr2020_001_broadpass_2001_profiles_stacked | Adobe PDF files | 27.1 M | Read me |
| Download gpr2020_001_broadpass_2001_ascii_data | ASCII tabular files | 66.8 M | Read me |
