Predicting Natural Background Radiation
summary
Uses aerial gamma surveys (NURE 1973 flightlines) with a sodium iodide detector mounted on aircraft to map Nebraska Sandhills background radiation, finds survey spacing and detector footprint mismatch so samples blur dune-scale features, reports a rough positive correlation between clay content and exposure rate amid high noise, applies a Fourier transform that fails to reveal dune periodicity, and concludes geometry and resolution dominate errors. Survey data are old (1973), grid spacing is coarse, and improved low-altitude surveys would be needed for definitive results.
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chapters (10)
- 0:00Start
- 2:57AVERAGE SOURCES OF RADIATION EXPOSURE
- 5:15SOURCES OF GAMMA RADIATION
- 10:49INTRODUCTION
- 12:14Radiation Detection Scintillation Detectors
- 15:17THE GAMMA RAY SPECTRUM
- 16:55WHY STUDY SAND DUNES?
- 18:49THE NEBRASKA SAND HILLS
- 23:33RESULTS: DEPTH TO WATER TABLE
- 24:59FOURIER TRANSFORM
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