Podrobnosti záznamu

Název
    Cave Microclimate Impact on Karst Processes: Role of Cave Ventilation
Autor
    Faimon, Jiří
    Troppová, Dana
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Slovenský kras (Acta Carsologica Slovaca)
Svazek/č.
    Roč. 46, č. 2
Strany
    3
Rok
    2008
Výraz tezauru
    atmosphere
    cave
    condensation
    flow direction
    flux
    oscillation
    ventilation
Klíčové slovo
    Cave
    Impact
    Karst
    Microclimate
    Processes
    Role
    Ventilation
Abstrakt (anglicky)
   Cave ventilation and its impact on microclimatic parameters were studied in the Císařská Cave (the northern part of the Moravian Karst, Czech Republic) during 2006-2007 period. Air fluxes through cave oscillated with a period of few seconds and amplitude about 0.1 m3 s-1. Mean volume fluxes through the lower and higher entrances, respectively, varied from +0.10 to -0.05 m3 s-1 and from -0.19 to +0.07 m3 s-1 as outdoor temperature varied between -3.2 and 31.9 deg C. The unbalanced fluxes indicate minor additional fluxes in/out of cave. A nonlinear dependence of air flux on outdoor temperature was found. The fluxes were lowest at 13 deg C. They oscillated with 0.03 m3 s-1 amplitude and changed their directions. The cave ventilation, v = 0.059 hour-1, and residence time, tau = 17 hours, were calculated from the maximum flux of 0.188 m3 s-1. The residence time value indicates that cave atmosphere should be completely exchanged during 17 hours under these conditions and at an ideally piston
    flux.
Přispěvatel
    MU Brno, Přírodovědecká fakulta
Kód přispěvatele
    MU, PřF
Zdrojový formát
    R
Datum importu
    8. 8. 2012