- Journal Article
Rights / licenseCreative Commons Attribution 3.0 Unported
Subsurface storm flow (SSF) can play a key role for the runoffgeneration at hillslopes.Quantifications of SSF suffer from the limited understanding of how SSF is formedand how it varies in time and space. This study concentrates on the temporal variabil-ity of SSF formation. Controlled sprinkling experiments at three experimental slopes were replicated with varying precipitation intensity and varying antecedent precipita-tion. SSF characteristics were observed with hydrometric measurements and tracerexperiments. SSF response was affected in different ways and to varying degree bychanges of precipitation intensity and antecedent precipitation. The study showed thatthe influence of antecedent soil moisture on SSF response depends on the type of SSF formation. Formation of subsurface stormflow was hardly influenced by the increaseof precipitation intensity. As a consequence, subsurface flow rates were not increasedby higher precipitation intensity. Different soil structures determined runoffformation atdifferent precipitation intensities. Saturation and flow formation occurred at the base ofthe soil, but also within the topsoil during high precipitation intensity. This implies that timing and magnitude of flow response can change substantially at different precipita-tion intensities Show more
Journal / seriesHydrology and Earth System Sciences Discussions
Pages / Article No.
Organisational unit03432 - Kinzelbach, Wolfgang
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