title: Gamma Emitters in Marine Sediments near the Columbia River.
abstract: Samples from sediment cores collected at 26 different locations 5 to 35 miles offshore in and around Astoria Submarine Canyon were analyzed for gamma emitters. Chromium-51 and zinc-65 were the principal radio-nuclides found, although several fission products and natural potassium-40 were also present. Radioactivity fell off sharply with distance from the mouth of the Columbia River, indicating that the river serves as a common source of the artificial radionuclides.
authors.forename: C
authors.initials: C
authors.lastname: Osterberg
authors.forename: L D
authors.initials: LD
authors.lastname: Kulm
authors.forename: J V
authors.initials: JV
authors.lastname: Byrne