Publication Date: Dec 1954 Pp vp Document Type: Journal Article Language: Japanese Journal Announcement: BDB8109 Subfile: TIC (Technical Information Center). Country of Origin: Japan Abstract: Detection of nuclear explosions by various methods including observations of fission product activity in the atmosphere is discussed. Deposition of 750 cpm on a vase-line coated paper (30 x 30 cm) on May 13 to 16, 1954 was recorded. Eighty-six thousand cpm/1 was observed in rain at Kyoto on May 14, apparently from the May 5 test at Bikini.; Major Descriptors: *JAPAN -- RADIATION MONITORING; *NUCLEAR EXPLOSION DETECTION; *RAIN -- RADIOACTIVITY; *SNOW ~- RADIOACTIVITY Descriptors: BIKINI; EARTH ATMOSPHERE; FALLOUT; FISSION PRODUCTS; NUCLEAR EXPLOSIONS Broader Terms: ASIA; ATMOSPHERIC PRECIPITATIONS; DETECTION; EXPLOSIONS; ISLANDS; ISOTOPES; MARSHALL ISLANDS; MATERIALS; MICRONESIA; MONITORING; OCEANIA; RADIOACTIVE MATERIALS Subject Categories: 500300* -- Environment, Atmospheric -- Radioactive Materials Monitoring & Transport -- (-1989) 450300 -- Military Technology, Weaponry, & National Defense ~- Nuclear Explosion Detection 10/5/760 00831033 Author(s): (Item 460 from file: ERA-07-005717; Daniels, F.B.; 103) EDB-82-005869 Harris, A.K. Title: Effects of nuclear detonations on the ionosphere Corporate Source: Evans Signal Lab., Belmar, NJ (USA) Publication Date: 22 May 1957 p 75 Report Number(s): AD-361772 Document Type: Report Language: English Journal Announcement: EDB8107 Availability: NTIS, PC A0O4/MF AOl. Subfile: ERA (Energy Research Abstracts); NTS (NTIS). Country of Origin: United States Country of Publication: United States Abstract: During Operation CASTLE, two ionosphere recorders were operated in the Marshall Islands -at Site Elmer, about 200 miles west of Bikini Atoll, and at Rongerik Atoll, about 150 miles east of Bikini -- in order to study the effects of the detonations on the ionosphere. Severe absorption was observed 200 miles west of all multimegaton shots, lasting several hours, presumably due to ionization caused by radioactive material carried by high-level winds. Turbulence in the E region after each major shot was indicated by the diffuse sporadic-E returns at Rongerik. Ionospheric disturbances were found up to 2,600 miles away, with indicated velocities of about 8 to 16 km/min.; Major Descriptors: *CASTLE PROJECT; *E REGION -- DISTURBANCES Descriptors: IONOSPHERE; NUCLEAR EXPLOSIONS; Broader Terms: HEARTH ATMOSPHERE; EXPLOSIONS; ; PLANETARY IONOSPHERES 450200 640202* -- Atmospheric Physics -- Effects of Nuclear -- Military Technology, Weaponry, Explosions & Explosives 10/5/761 00829786 & National Defense -- Nuclear ‘ (Item 461 from file: 103) ERA-07-005430; EDB-82-004622 Author(s): Heiskell, R.H.; Black, R.H.; Crew, R.J.; Fuller, Kawahara, F.K. Title: Shipboard radiological - countermeasure methods Corporate Source: (USA) Publication Date: Naval Radiological Defense Lab., 30 Jan 1959 p 86 R.K.; San Francisco, CA 9003949 Subject Categories: Detonations RADIOACTIVITY IONOSPHERE; NUCLEAR EXPLOSIONS