Country of Origin: United States Country of Publication: United States Abstract: The physical factors and dosimetry of the fallout on the Marshall Islands shot from the first of Operation CASTLE are discussed. Data was summarized from field Radiological Safety surveys, fallout radiochemical studies, and fallout gamma spectral measurements. The influence of these and other factors on an evaluation of sur vey meter response and total dose estimates was considered. Estimates of fallout duration times and energy distribution of the dose from a plane source were made and the effect of diffuse source-geometry on the depth-dose to air-dose relationship was considered. Superficial doses from soft gamma and beta radiation were also considered.; Major Descriptors: *FALLOUT -- RADIATION HAZARDS; *FALLOUT -- RADIONUCLIDE MIGRATION; *HUMAN POPULATIONS -- RADIATION DOSES; *MARSHALL ISLANDS -RADIOACTIVITY; *RADIONUCLIDE MIGRATION ~~ RADIATION DOSES Descriptors: BETA DOSIMETRY; DEPTH DOSE DISTRIBUTIONS; EXPERIMENTAL DATA; GAMMA DOSIMETRY; RADIATION MONITORING Broader Terms: DATA; DOSES; DOSIMETRY; ENVIRONMENTAL TRANSPORT; HAZARDS; HEALTH HAZARDS ; INFORMATION; ISLANDS; MASS TRANSFER; MICRONESIA; MONITORING} NUMERICAL DATA; OCEANIA; POPULATIONS; RADIATION DOSE DISTRIBUTIONS; SPATIAL DOSE DISTRIBUTIONS Subject Categories: 510300* Materials Monitoring & -- Environment, Transport -- Terrestrial -- Radioactive (-1989) 500300 -- Environment, Atmospheric -- Radioactive Materials Monitoring 560151 -- Radiation Effects on Animals -- Man & Transport 10/5/743 00875416 -- (-1983) (Item 443 from file: 103) ERA-07-023117; EDB-82-050257 Author(s): Steton, Chan, H.K. R.L.; Schuert, E.A.; Perkins, W.W.; Shirasawa, T.H.; Title: Distribution and intensity of fallout. Final report (Castle Project) Corporate Source: Naval Radiological Defense Lab., San Francisco, CA (USA) Publication Date: Report Number(s): Jan 1956 AD-361836 p 172 Document Type: Report; Numerical data Language: English Journal Announcement: BDB8107 Availability: NTIS, PC A08/MF A0l. Subfile: ERA (Energy Research Abstracts); NTS (NTIS). Country of Origin: United States Country of Publication: United States Abstract: The objective of this project was to document the distribution and intensity of fallout from all shots at Operation CASTLE. Data were obtained for Shots 1, 2, 3, 4, and 6 by use of land stations, anchored lagoon stations, and free-floating sea stations. A complete analysis of the Shot 1 fallout to 300 nautical miles downwind including the development of an experimental model based on fallout particle trajectories is presented as well as data on Shot 2 fallout to 50 nautical miles downwind and the close-in fallout from Shots 3, 4, and 6.; Major Descriptors: *CASTLE PROJECT; *FALLOUT -- RADIONUCLIDE MIGRATION; *NUCLEAR EXPLOSIONS -- FALLOUT; *RADIONUCLIDE MIGRATION Descriptors: AIR POLLUTION; EXPERIMENTAL DATA; LAND POLLUTION; MATHEMATICAL MODELS ; WATER POLLUTION Broader Terms: DATA; ENVIRONMENTAL TRANSPORT; EXPLOSIONS; INFORMATION; MASS TRANSFER; NUCLEAR EXPLOSIONS; NUMERICAL DATA; POLLUTION Subject Categories: 500300* -- Environment, Atmospheric -- Radioactive Materials Monitoring & Transport -- (-1989) 510301 -- Environment, Terrestrial -- Radioactive Materials Monitoring & Transport -- Soil -- (-1987) 520301 -- Environment, Aquatic -- Radioactive Materials Monitoring & Transport -~ Water -- (1987) oD rc ¢co cp oa ur