RADIATION MONITORING; RADIONUCLIDE MIGRATION; SAMPLING; SEDIMENTS; SOILS; SURFACE WATERS; TIME DEPENDENCE jroader Terms: ALKALINE EARTH ISOTOPES; ANIMALS; AQUATIC ORGANISMS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BIOMASS; ECOSYSTEMS; ELEMENTS; ENERGY SOURCES; ENVIRONMENTAL TRANSPORT; EVEN-EVEN NUCLEI; INTERMEDIATE MASS NUCLEI; ISLANDS; ISOTOPES; MARSHALL ISLANDS; MASS TRANSFER; MONITORING; NUCLEI; RADIOISOTOPES; RENEWABLE ENERGY SOURCES; SPECTROSCOPY; STRONTIUM ISOTOPES; VERTEBRATES; YEARS LIVING RADIOISOTOPES Subject Categories: 510302* -- Environment, Terrestrial -- Radioactive Materials Monitoring & Transport -- Terrestrial Ecosystems & Food Chains 7- (-1987) 520302 -- Environment, Aquatic -- Radioactive Materials Monitoring & Transport -- Aquatic Ecosystems & Food Chains -- (-1987) INIS Subject Categories: C22* -- Radionuclide Ecology 10/5/948 (Item 648 from file: 103) 00411316 ERA-03-053531; NTS-78-066473; EDB-78-110496 Author(s): Marsh, K.V.; Jokela, T.A.; Eagle, R.J.; Noshkin, V.E. Title: Radiological and chemical studies of ground water at Enewetak Atoll. 2. Residence time of Cactus Crater Corporate Source: Lab. Publication Date: California Univ., 8 May 1978 Livermore (USA). Lawrence Livermore p 25 Report Number(s): UCRL-51913(Pt.2) Contract Number (DOE): W-7405-ENG-48 Document Type: Report Language: English Journal Announcement: EDB7810 Availability: Dep. NTIS, PC A0Q2/MF AOQ1l. Subfile: NTS (NTIS); ERA (Energy Information Center). Research Abstracts); TIC (Technical Country of Origin: United States Country of Publication: United States Major Descriptors: *ENIWETOK -- GROUND WATER; *GROUND WATER -- HYDROLOGY; *GROUND WATER -- WATER QUALITY Descriptors: DRINKING WATER; MARSHALL ISLANDS; RADIOACTIVITY Broader Terms: HYDROGEN COMPOUNDS; ISLANDS; MARSHALL ISLANDS; OXYGEN COMPOUNDS; WATER Subject Categories: 520301* -- Environment, Materials Monitoring & Transport 10/5/949 00405375 Author(s): ~-- Water (Item 649 from file: 103) INS-78-014866; ERA-03-051034; Koranda, J.J.; Robison, W.; Aquatic -- Radioactive -- NTS-78-065257; Thompson, Title: Enewetak Radioecology Research Program. Engebi Island, 1975--1976 Corporate Source: California Univ., Livermore Lab. Publication Date: Report Number(s): 23 Feb 1978 UCRL-52409-1 p 23 (1987) I. S.E.; EDB-78-104555 Stuart, M.L. Ecological studies on (USA). Lawrence Livermore 9008855 Abstract: This is the second in a series of reports on a ground water study at Enewetak Atoll conducted jointly by the Lawrence Livermore Laboratory and the University of Hawaii under the sponsorship of DOE division of Biology and Environmental Research. The purpose of this study is to provide data characterizing ground water for possible use by returning Marshallese and to investigate the hydrology and recycling of radionuclides in an atoll environment. This report describes fluorescent dye tracing used to assess the flushing characteristics, dilution rate, and water dispersal in Cactus Crater. A simple model explains experimental observations in terms of tidal effects. The mean residence time of water in the crater is about 2.6 days, depending on the tidal range; mixing is complete within 24 hours and water loss occurs mainly by overflow at high tide. This paper also addresses possible consequences of filling the crater with contaminated” soil for disposal.;