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Flood deposits in a modern oxbow lake (Czech Republic): Sedimentary archive of 25-year old river contamination

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F09%3A00036718" target="_blank" >RIV/00216224:14310/09:00036718 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Flood deposits in a modern oxbow lake (Czech Republic): Sedimentary archive of 25-year old river contamination

  • Original language description

    Toxic compounds transported by rivers are usually bound to fine-grained solid particles, which are deposited as contaminated fluvial sediments. Much of this contamination is likely to be redistributed, constituting potential serious environmental hazards. Relatively complete sediment archives of river contamination can be found in floodplains and oxbow lakes. We analysed a high-resolution (month- to seasonal scale) stratigraphic record of heavy metal contamination in deposits of an artificial oxbow lake, a former meander of River Morava, a left hand tributary to River Danube. Since 1930s, the lake has been connected to the river channel via a water gate allowing contaminated fine-grained sediments to enter and settle in the lake. The accumulated sediment forms a distinct wedge, about 150 m long, 30 m wide and &gt;2.5 m thick in the proximal part. 137Cs dating revealed a distinct (~300 Bq.kg-1) Chernobyl anomaly at ~130 cm depth, implying relatively high sedimentation rates of ~5.9 cm p

  • Czech name

  • Czech description

Classification

  • Type

    O - Miscellaneous

  • CEP classification

    DB - Geology and mineralogy

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Others

  • Publication year

    2009

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů