Počet záznamů: 1  

Twenty-year inter-annual trends and seasonal variations in precipitation and stream water chemistry at the Bear Brook Watershed in Maine, USA

  1. 1.
    SYSNO ASEP0348967
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevTwenty-year inter-annual trends and seasonal variations in precipitation and stream water chemistry at the Bear Brook Watershed in Maine, USA
    Tvůrce(i) Navrátil, Tomáš (GLU-S) RID, SAI, ORCID
    Norton, S. A. (US)
    Fernandez, I. J. (US)
    Nelson, S. J. (US)
    Zdroj.dok.Environmental Monitoring and Assessment. - : Springer - ISSN 0167-6369
    Roč. 171, 1/4 (2010), s. 23-45
    Poč.str.23 s.
    Forma vydáníWWW - WWW
    Jazyk dok.eng - angličtina
    Země vyd.NL - Nizozemsko
    Klíč. slovaBear Brook Watershed in Maine ; precipitation chemistry ; stream chemistry ; seasonality ; long-term trends
    Vědní obor RIVDD - Geochemie
    CEZAV0Z30130516 - GLU-S (2005-2011)
    UT WOS000283592800003
    EID SCOPUS78149409692
    DOI10.1007/s10661-010-1527-z
    AnotaceMean annual concentrations of SO42- and NO3- in wet-only deposition have decreased between 1988 and 2006 at BBWM due to decreased emissions of SO2 and NOx. Base cations, NH4+ and Cl- concentrations mostly exhibited no trends or statistically significant trends but with change of < 1 ueq L-1 per year from 1988 to 2006. Seasonally, two chemically distinct periods of precipitation (April to September) and (October to March) indicate two different trajectories of air mass movement: dominantly continental sources in the warm season with increased SO42- and NH4+ and mixed continental and marine sources in the cool season with increased inputs of marine aerosols. The major factors driving seasonality of the streams are hydrology, vegetation activity, and temperature. The low flow periods June - October were typical with greater contribution of the deeper flow solutions and increased pH value, anion neutralizing capacity, Si concentration, non-marine Na and low Ali concentrations.
    PracovištěGeologický ústav
    KontaktJana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272
    Rok sběru2011
Počet záznamů: 1  

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