plasma bubbles Author(s): Tsunoda, Affiliation: Source: J. R.T. SRI International, Geophys. Res. Menlo Park, (United States) Publication Date: 1 Jan 1980 p 185-190 Document Type: Journal Article Language: English Journal Announcement: EDB8004 Subfile: INS (US Atomindex input); AIP California 94025 v 85:Al. Coden: JGREA (SPIN). Country of Origin: United States Abstract: A radar experiment was conducted on August 18, é at Kwajalein 1978, Atoll, Marshall Islands, to investigate the spatial relationship of l1-m equatorial spread F irregularities to plasma bubbles (localized depletions in F layer plasma density). East-west scans were made with Altair, an incoherent scatter radar, to spatially map (1) the backscatter produced by field-aligned irregularities and (2) the electron density distribution of the background F layer. Plasma bubbles were spatially mapped for the first time with an incoherent scatter radar. By assuming invariance along the magnetic field lines (over distances of less than 100 km) we show that 1-m field-aligned irregularities are directly related to plasma bubbles.; Major Descriptors: *IONOSPHERIC STORMS ~-- PLASMA DENSITY Descriptors: ELECTRON DENSITY; F REGION; INCOHERENT SCATTERING; RADAR Broader Terms: EARTH ATMOSPHERE; IONOSPHERE; MEASURING INSTRUMENTS; PLANETARY IONOSPHERES; RANGE FINDERS; SCATTERING Subject Categories: 640201* -- Atmospheric Physics -- Auroral, Ionospheric, & Magetospheric Phenomena INIS Subject Categories: B33* -- Atmosphere 10/5/909 (Item 609 from file: 103) 00606561 ERA-05-016679; INS-80-005888; EDB-80-046084 Title: Preconcentration of plutonium radionuclides from natural waters Author(s): Wong, K.M.; Noshkin, Dunaway, P.B. (eds.) V.E.; Jokela, T.A.; White, M.G.; Affiliation: Univ. of California, Livermore Title: Selected environmental plutonium research reports of the NAEG Corporate Source: Holmes and Narver, Inc., Mercury, NV (USA) Conference Title: Plutonium information conference Conference Location: San Diego, CA, USA Conference Date: 28 Feb 1978 Publication Date: Jun 1978 p 583-592 Report Number(s): NV0-192(Vol.2); CONF-780212- (Vol.2) Document Type: Analytic of a Report; Language: English Journal Announcement: EDB8004 Numerical data Availability: Dep. NTIS, PC A19/MF AOl. Subfile: INS (Technical (US Atomindex input); Information Center). Country of Origin: United States Country of Publication: United States ERA (Energy Research Abstracts); TIC wv technique are compared with a radiochemical coprecipitation method. Consistent results were obtained between the two methods for water samples from the Pacific Ocean and Eniwetok lagoon. Different results were noted from samples collected in the Eniwetok reef and groundwater stations. We were able to demonstrate, using this preconcentration technique and the coprecipitation method, that the physical-chemical characteristics of Pu in Eniwetok reef and groundwater are different from the lagoon and open ocean.; 90040249 Abstract: A large-volume water sampler using manganese dioxide impregnated cartridges for the in situ separation of plutonium in seawater and groundwater was studied. Plutonium concentrations obtained by this Major Descriptors: *GROUND WATER -- SAMPLING; *PLUTONIUM COMPOUNDS -QUANTITY RATIO; *PLUTONIUM COMPOUNDS -- SEPARATION PROCESSES; *SEAWATER -~ SAMPLING Descriptors: COMPARATIVE EVALUATIONS; ENIWETOK; EXPERIMENTAL DATA; ISOLATED VALUES; PACIFIC OCEAN Broader Terms: ACTINIDE COMPOUNDS; DATA; DATA FORMS; HYDROGEN COMPOUNDS;