Radiometric Data of Airborne Geophysical Surveys over the Eastern Adirondacks, New York State
Dates
Publication Date
2016
Start Date
2015-12-07
End Date
2015-12-21
Citation
Shah, A.K., 2016, Airborne Geophysical Surveys over the Eastern Adirondacks, New York State: U.S. Geological Survey data release, https://doi.org/10.5066/F72R3PT0.
Summary
Airborne geophysical surveys were conducted in the eastern Adirondacks from Dec. 7, 2015 - Dec. 21, 2015, by Goldak Airborne Surveys. The area was flown along a draped surface with a nominal survey height above ground of 200 meters. The flight line spacing was 250 meters for traverse lines and 2500 meters for control lines. Here we present downloadable radiometric (gamma spectrometry) data from those surveys as flight line data (csv format) or Geotiff images. Line data (EAdirondacksSpec.csv) are presented as comma separated values with the following definitions (see technical report for details): LINE: Flight line number DATE: YYYY/MM/DD TIME: Time (UTM, 24-hour) hh:mm:ss LONG: Longitude, WGS84 (degrees) LAT: Latitude WGS84 [...]
Summary
Airborne geophysical surveys were conducted in the eastern Adirondacks from Dec. 7, 2015 - Dec. 21, 2015, by Goldak Airborne Surveys. The area was flown along a draped surface with a nominal survey height above ground of 200 meters. The flight line spacing was 250 meters for traverse lines and 2500 meters for control lines. Here we present downloadable radiometric (gamma spectrometry) data from those surveys as flight line data (csv format) or Geotiff images.
Line data (EAdirondacksSpec.csv) are presented as comma separated values with the following definitions (see technical report for details):
LINE: Flight line number
DATE: YYYY/MM/DD
TIME: Time (UTM, 24-hour) hh:mm:ss
LONG: Longitude, WGS84 (degrees)
LAT: Latitude WGS84 (degrees)
x_UTM18N: Easting, UTM Zone 18N (meters)
y_UTM18N: Northing, UTM Zone 18N (meters)
RALT: Radar altimeter height (meters)
BALT: Barometric altimeter height (meters)
GPSZ: GPS elevation (meters)
STPHT: Standard temperature/pressure height (m)
TEMP: Temperature (degrees C)
BARPRES: Barometric pressure (kPa)
TOTCT: Raw total count (counts/second)
COSFILT: Low-pass filtered cosmic count (cps)
RADON: Computed radon background (cps)
TC_DOSE: Natural air absorbed dose rate (nGy/h)
K_PCT: Corrected potassium concentration (%)
U_PPM: Corrected uranium concentration (ppm)
Th_PPM: Corrected Thorium concentration (ppm)
Geotiff images show potassium (K), equivalent uranium (eU), equivalent thorium (eTh), dose rate and a ternary diagram showing relative abundances of K, eU, and eTh. The files are, respectively, EAdirondacks_K.tif, EAdirondacks_eU.tif, EAdirondacks_eTh.tif, EAdirondacks_Dose.tif, and EAdirondacks_Ternary.tif. Images use projected coordinates (UTM 18N, WGS84); Geotiff tags are embedded. Colorbar images and a ternary legend are provided in separate files (DatasetName_colorbar.jpg, Ternary_legend.jpg).