منابع مشابه
Bottom Sediments of Lake Nicaragua and Lake Managua, Western Nicaragua
Lakes Nicaragua and Managua are large, rather shallow, fresh-water bodies that lie in a late Tertiary and Quaternary graben in western Nicaragua. The bottom sediments comprise highly organic diatomaceous volcanic silts and clays in which quartz plagioclase feldspar, dioctahedral montmorillonite and volcanic glass are the principal constituents. ' Organic nitrogen content of the lake sediments r...
متن کاملPalynological study of Lake Kotokel’ bottom sediments (Lake Baikal region)
Pollen and AMSC analyses of bottom sediments from the upper nine meters of the Lake Kotokel’ section were carried out. The regional climate and landscape dynamics during the Late Glacial and Holocene has been reconstructed with an average time resolution of ~120 years. It is shown that the climatic conditions in the Kotokel’ basin during Termination I (~15.5–11 ka) were characterized by short d...
متن کاملPhosphorus flux from bottom sediments in Lake Eucha, Oklahoma.
Phosphorus inputs into reservoirs include external sources from the watershed and internal sources from the reservoir bottom sediments. This study quantified sediment P flux in Lake Eucha, northeastern Oklahoma, USA, and evaluated the effectiveness of chemical treatment to reduce sediment P flux. Six intact sediment-water columns were collected from three sites in Lake Eucha near the reservoir ...
متن کاملREPORTS : Evaluation of groundwater flux through bottom sediments of Otsego Lake , 1999
Seepage meters were constructed to measure the influx of groundwater in Otsego Lake (Donnelly, 1999; after Lee, 1977). The meters were placed at the bottom of the lake to indicate the amount of water entering or leaving the lake through bottom sediments. Balloons attached to the meters were used to capture groundwater and samples were tested for chloride ion levels to ascertain whether it was g...
متن کاملMigration and Forms of Metals in Bottom Sediments of Czerniakowskie Lake
The goal of the research was to determine the concentration of Zn, Cu, Pb and Cd forms in the bottom sediments of Czerniakowskie Lake situated within the boundaries of Warsaw. Sediment cores collected for examination purposes were divided into sections, which were approximately 5 cm thick and were analysed to determine the content of metal forms. In the investigated sediments metals were charac...
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ژورنال
عنوان ژورنال: New Zealand Journal of Marine and Freshwater Research
سال: 1983
ISSN: 0028-8330,1175-8805
DOI: 10.1080/00288330.1983.9515996