Podrobnosti záznamu

Název
    Krasové prameny Českého krasu
Údaj o odpovědnosti
    Renáta Kadlecová, Karel Žák
Další názvy
    Karst Springs of the Bohemian Karst
Autor
    Kadlecová, Renáta
    Žák, Karel, 1957-
Jazyk
    česky
Zdrojový dokument - seriál
    Český kras
Svazek/č.
    Roč. 24
Strany
    s. 17-34, 1 l. obr. příl.
Rok
    1998
Poznámky
    1 obr., 1 tab., 39 bibl. + 1 mapa
    Anglické resumé
    Zkr. název ser.: Čes. Kras
Předmětová skupina
    Barrandien
    hydrochemie
    hydrogeologie regionální
    hydrologie krasová
    kras
    pramen
    pramen krasový
    vydatnost
Geografické jméno
    Český kras
    ČR-Čechy
Klíčové slovo
    Českého
    Krasové
    Krasu
    Prameny
Abstrakt (anglicky)
   The Bohemian Karst, a small karst region located SW of Prague, is known for numerous karst springs. Calcareous tufa precipitates from most of karst springs. Here we give location and principal characteristics of more than 100 hydrogeologically important objects in this region. The largest spring discharges at Svatý Jan pod Skalou (mean discharge about 20 l.s.-1, mean temperature 11.4 °C) and there are several other large springs with discharge above 5 l.s.-1 in the region. The position of individual springs is given by a combination of structural, tectonic and morphological features and by complex multi-stage development of the karst itself. Most springs are characterised by relatively stable discharge and temperature. The Bohemian Karst is not a classical karst area. Caves with common stream morphology and active subsurface streams are not typical here.
   Caves are rather reresented by extensivelly corroded fissures, narrow passages and channels, which are, at least partly, believed to be formed as corrosional cavities below the water table. Karst springs characterised by water with short underground residence time and with rapid response to precipitation events are almost missing. Instead, most springs are dominated by water with relatively long residence time and represent discharge from local aquifers of combined karst/fissure type, which developed in individual structurally and tectonically controled limestone segments. The water table in these karst aquifers lies usually between 20 and 100 m below the present surface. Most aquifers are contaminated by nitrates as a result of agricultural activity
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (UNM)
Zdrojový formát
    U
Datum vložení
    24. 11. 2008
Datum importu
    8. 8. 2012