Kuskokwim airborne magnetic and radiometric survey, Sischu Mountains, Geophysical Report 2024-1, covers parts of the Ruby, Kantishna River, Mt. McKinley, Medfra, and Ophir quadrangles north of McGrath, Alaska. Magnetic and radiometric data were collected with a helicopter between July 14, 2023, and October 15, 2023, by Geotech Ltd. The survey contains a single block covering 8,008 km2. A total of 25,878 line-kilometers were collected. The magnetometer was installed inside the stinger attached to the helicopter nose. The airborne gamma-ray spectrometer was mounted on the interior floor of the helicopter cabin. The block was flown with a line spacing of 400 m. The mean ground clearance is 192 m with a nominal survey speed of 142 km/hour.
| File Name | Data File Format | File Size | Info |
|---|---|---|---|
| Download gpr2024_001_vector_data | Shapefile | 353.2 K | Read me |
| Download gpr2024_001_grids_geosoft | Gridded data Geosoft format | 60.0 M | Read me |
| Download gpr2024_001_kmz | Google Earth files | 437.0 M | Read me |
| Download gpr2024_001_maps_geosoft | Geosoft packed map files | 124.5 M | Read me |
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| Download gpr2024_001_databases_geosoft | Database files | 3.9 G | Read me |
| Download gpr2024_001_documents | Adobe PDF files | 24.9 M | Read me |
| Download gpr2024_001_maps_pdf_format | Adobe PDF files | 737.7 M | Read me |
| Download gpr2024_001_ascii_data | ASCII tabular files | 4.7 G | Read me |
