Gamma radiation Electromagnetic radiation having very short wavelength and great penetrating power.
Geologic time A span of millions or billions of years in the past.
RadiofaxAbbreviation for radiofacsimile Radioisotope Snow GageA snow water equivalent gage based on the absorption of gamma radiation by snow; this gage can measure up to 55 inches water equivalent with a 2 to 5 percent error.
x-ray"(Or x-radiation, Röntgen ray.) Electromagnetic radiation with wavelengths shorter than that of ultraviolet radiation and greater than that of gamma radiation. Discovered accidentally by Röntgen in 1895.
Airborne Snow Water Equivalent Measurement Theory A theory based on the fact that natural terrestrial gamma radiation is emitted from the potassium, uranium, and thorium radioisotopes in the upper eight inches of the soil.
A snow water equivalent gage based on the absorption of gamma radiation by snow; this gage can measure up to 55 inches water equivalent with a 2 to 5 percent error.
Radiosonde ...
Radioisotope Snow Gage: A snow water equivalent gage based on the absorption of gamma radiation by snow; this gage can measure up to 55 inches water equivalent with a 2 to 5 percent error.
 See also: Water, Atmosphere, Energy, Surface, Forecast
  
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