Record details

Title
    Carbon isotope composition of methane emissions in the Czech Republic - preliminary results
Statement of responsibility
    František Buzek, Vlastimil Holub, Zbyněk Boháček, Jiří Franců
Author
    Boháček, Zbyněk
    Bůzek, František
    Franců, Jiří
    Holub, Vlastimil
Language
    anglicky
Source title - serial
    Věstník Českého geologického ústavu (Bulletin of the Czech Geological Survey)
Vol./nr.
    Vol. 74, no. 2
Pages
    p. 191-196
Year
    1999
Notes
    2 diagr., 23 bibl.
    České resumé
    Zkr. název ser.: Věst. Čes. geol. Úst. (Bull. Czech geol. Surv.)
Subject group
    hornoslezská pánev
    izotopy
    izotopy C
    metan
    plynovod
    rašeliniště
    severočeská pánev
    sokolovská pánev
    středočeské svrchní paleozoikum
    uhlí bituminózní
    uhlí hnědé
Geographical name
    Česká republika
Keyword
    Carbon
    Composition
    Czech
    Emissions
    Isotope
    Methane
    Preliminary
    Republic
    Results
Abstract (in english)
   To specify of atmospheric methane emissions in the Czech Republic, the carbon isotope composition of most anthropogenic sources was measured. Study includes pipeline gas (PG), gas emissions from peat bog (PB), emissions related to brown coal mining in the North Bohemian Brown Coal Basin (NBBCB) and of bituminous coals from Carboniferous of Central Bohemia (CB) and Upper Silesian Coal Basin (USCB). The 13C values vary from -20%.(CB) to -75%. (biogenic gas USCB). Methane samples from PB, NBBCB and USCB were affected by microbialoxidation which changes both methane concentration and its isotopic composition. Oxidation lowers the net methane flux into the atmosphere. The most important anthropogenic source (USCB) has been studied in detail. Two types of methane dominate in this area: a thermogenic gas with the 13C value close to -40%. and a biogenic gas with the 13C values in range from -55 to -75%..
   Biogenic methane in aerated mine zones has been reoxidized back to carbon dioxine with the 13C values in range from -30 to -50%.
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    28. 3. 2008
Import date
    8. 8. 2012