Record details

Title
    The Hydrology of the Covered Catchment : Water Storage, Flowpaths and Residence Times
Statement of responsibility
    Kevin H. Bishop, Michael Hauhs, Lars Nyberg, Jan Seibert, Filip Moldan, Allan Rodhe, Holger Lange, Gunnar Lischeid
Author
    Bishop, Kevin H.
    Hauhs, Michael
    Lange, Holger
    Lischeid, Gunnar
    Moldan, Filip
    Nyberg, Lars
    Rodhe, Allan
    Seibert, Jan
Language
    anglicky
Source title - monograph
    Experimental reversal of Acid Rain Effects: The Gardsjön Roof Project
Pages
    s. 109-135
Notes
    14 obr., 3 tab., 2 s.bibl.
Subject group
    geochemie izotopická
    hydrodynamika
    hydrologie
    látky stopovací radioaktivní
    malé povodí
    monitoring
    profil půdní
    voda podzemní
Geographical name
    Švédsko
Keyword
    Catchment
    Covered
    Flowpaths
    Hydrology
    Residence
    Storage
    Times
    Water
Abstract (in english)
   The hydrology of the G1 ROOF catchment was analysed using a variety of hydrometric and tracer techniques that sought to identify flowpaths and residence times. These studies found that runoff response to precipitation was rapid once a water storage threshold is passed (200 mm). Water storage within the catchment varied from 125-245 mm, with a 3 year average of 191 mm. The proportion of this storage which was held in the unsaturated zone above the water table went from over 90at low flow to a minimum of 40at peak flow. Much of the runoff was transmitted in the upper three decimetres of the soil. Some tracer studies found that the residence time of water within the catchment can be described by an exponential distribution. The mean residence time varies from 5 days at the highest observed flow rates to 175 days at the lowest observed flow rates. A small portion of the water can move at rates of several metres per hour during periods of high flow.
   The spatial pattern of residence times within the catchment, as observed from a step-shift of the 18 O in precipitation after the roof was built, was consistent with the general picture of flowpaths arrived at from hydrometric measurements. While these investigations ahve identified many hydrological features typical of Fenno-Scandian till catchments, the shallow soils, high organic matter content in the B horizon, and strong lateral concentration of flow across the concave topography of the catchment are important to bear in mind when ge
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    21. 3. 2008
Import date
    8. 8. 2012