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Interpreting streamflow generation mechanisms from integrated surface-subsurface flow models of a riparian wetland and catchment

Title data

Partington, Daniel ; Brunner, P. ; Frei, Sven ; Simmons, C. T. ; Werner, Adrian D. ; Therrien, R. ; Maier, H. R. ; Dandy, G. C. ; Fleckenstein, Jan:
Interpreting streamflow generation mechanisms from integrated surface-subsurface flow models of a riparian wetland and catchment.
In: Water Resources Research. Vol. 49 (2013) Issue 9 . - pp. 5501-5519.
ISSN 1944-7973
DOI: https://doi.org/10.1002/wrcr.20405

Abstract in another language

The understanding of streamflow generation processes is vitally important in themanagement of water resources. In the absence of the data required to achieve this, IntegratedSurface-Subsurface Hydrological Models (ISSHM) can be used to assist with thedevelopment of this understanding. However, the standard outputs from these models onlyenable elicitation of information about hydrological drivers and hydrological responses thatoccur at the same time. This generally limits the applicability of ISSHMs for the purposes ofobtaining an improved understanding of streamflow generation processes to catchment areasthat do not exhibit significant storage, travel times or flow depletion mechanisms. In order toovercome this limitation, a previously published Hydraulic Mixing-Cell (HMC) method isimproved so that it can be used to follow surface water derived from direct rainfall andgroundwater discharge to the stream and adjacent overland flow areas. The developedapproach was applied to virtual experiments (based on the Lehstenbach catchment in southeastern Germany), which are composed of two ISSHMs of contrasting scales: (1) a riparianwetland of area 210 m2, and (2) a catchment of area 4.2 km2. For the two models, analysis ofmodeling results for a large storm event showed complex spatiotemporal variability instreamflow generation and surface water-groundwater interaction. Further analysis with theHMC method elucidated in-stream and overland flow generation mechanisms. This studyshowed within a modeling framework, that identification and quantification of in-stream andoverland flow generation better informed understanding of catchment functioning throughdecomposition of streamflow hydrographs, and analysis of spatiotemporal variability of flowgeneration mechanisms.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER117033
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Hydrology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Hydrology > Chair Hydrology - Univ.-Prof. Dr. Stefan Peiffer
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 12 May 2015 06:11
Last Modified: 04 Jan 2018 09:59
URI: https://eref.uni-bayreuth.de/id/eprint/13345