Radioactive snow gauge

Alternative definitions (1), class: vernacular (0)
Term: Radioactive snow gauge
Definition: A device that automatically and continuously records the water equivalent of snow on a given surface as a function of time. A small sample of a radioactive salt is placed in the ground in a lead-shielded collimator that directs a beam of radioactive particles vertically upward. A Geiger-M ller counting system (located above the snow level) measures the amount of depletion of radiation caused by the presence of the snow.
Created 2022.03.08
Last Modified 2023.03.27
Contributed by GCW Glossary