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Groundwater recharge and residence times evaluated by isotopes of hydrogen and oxygen, noble gases and CFCs in a mountain catchment in the Jizera Mts., northern Czech Republic

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00314228" target="_blank" >RIV/68407700:21110/17:00314228 - isvavai.cz</a>

  • Result on the web

    <a href="https://www.jstage.jst.go.jp/article/geochemj/51/5/51_2.0469/_article" target="_blank" >https://www.jstage.jst.go.jp/article/geochemj/51/5/51_2.0469/_article</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.2343/geochemj.2.0469" target="_blank" >10.2343/geochemj.2.0469</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Groundwater recharge and residence times evaluated by isotopes of hydrogen and oxygen, noble gases and CFCs in a mountain catchment in the Jizera Mts., northern Czech Republic

  • Original language description

    Groundwater recharge amounts and residence times were estimated in the quaternary aquifer of the Jizera Mountains, Czech Republic, using noble gases, 2H, 18O, 3H and CFCs. Tracer ages from years to decades were determined for water in a shallow sedimentary aquifer (three boreholes of 10, 20 and 30 m depth). Approximately 90–180 mm of precipitation (7–14% of annual precipitation) infiltrates to deep percolation. A mean percolation velocity of 0.6 m/y in the sedimentary Uhlířská aquifer was estimated based on an apparent groundwater age of 40 years at 30 m depth. A lumped parameter approach was used to calculate groundwater residence times based on synoptic evaluation of 3H/3He, 3H and CFCs. Groundwater apparent ages in the shallowest borehole (10 m depth) determined by 3H/3He are younger than those determined by CFCs. This discrepancy is caused by partial re-equilibration of water with modern air, and by admixing of water that has zero age. The pronounced variations of d18O values in the borehole may be ascribed to a young component quickly recharged from the air-exchanged stream water or through preferential flowpaths.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10501 - Hydrology

Result continuities

  • Project

    <a href="/en/project/GC14-15201J" target="_blank" >GC14-15201J: Subsurface transport of water, carbon and heat - combined hydrological, geochemical and isotopic approach</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2017

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Geochemical Journal

  • ISSN

    0016-7002

  • e-ISSN

    1880-5973

  • Volume of the periodical

    51

  • Issue of the periodical within the volume

    5

  • Country of publishing house

    JP - JAPAN

  • Number of pages

    15

  • Pages from-to

    423-437

  • UT code for WoS article

    000413244900004

  • EID of the result in the Scopus database

    2-s2.0-85018458257