AERORADIOACTIVITY SURVEY AND AREAL GEOLOGY OF THE HANFORD PLANT AREA, WASHINGTON AND OREGON (ARMS-Ⅰ)

摘要

A recent airborne gamma radioactivity survey in south-central Washington and north-central Oregon indicates a moderate range in the level of radioactivity and that the various levels are generally related to the geology of the region.nA survey of 9000 square miles near Pasco and Yakima, Wash., was made by the U. S. Geological Survey on behalf of the U. S. Atomic Energy Commission. Continuous radioactivity profiles were obtained with scintillation counting equipment at 500 ft above the ground on parallel north - south flight lines spaced 1 mile apart. Locally, the mountainous topography prevented operation of the aircraft on the planned flight lines, and in-some of these areas a few substitute flights were possible along the valleys.