Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

Analytical modeling of hyporheic flow for in-stream bedforms : Perturbation method and implementation

Title data

Frei, Sven ; Zlotnik, Vitaly ; Grant, Stanley B. ; Azizian, Morvarid ; Toundykov, Daniel:
Analytical modeling of hyporheic flow for in-stream bedforms : Perturbation method and implementation.
In: Environmental Modelling & Software. Vol. 111 (2018) . - pp. 375-385.
ISSN 1364-8152
DOI: https://doi.org/10.1016/j.envsoft.2018.09.015

Abstract in another language

Hyporheic flow and nutrient turnover in hyporheic systems are strongly influenced by in-stream bedforms. An accurate representation of topographical variations of the stream-streambed interface is therefore essential in analytical models in order to represent the couplings between hydrological and biogeochemical processes correctly. The classical Toth approach replaces the streambed surface topography by a flat surface which is identical to a truncation of the original physical flow domain into a rectangle. This simplification can lead to biased estimates of hyporheic flow and nutrient cycling within hyporheic systems. We present an alternative analytical modeling approach for solving hyporheic problems without domain truncation that explicitly accounts for topographical variations of the streambed. The presented approach is based on the application of perturbation theory. Applications of the method to hyporheic systems, ranging from the centimeter-scale of rippled bedforms to riffle structures of 10 m and larger scale, indicate a high accuracy of the approach.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER148052
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Ecological Modelling
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Ecological Modelling > Chair Ecological Modelling - Univ.-Prof. Dr. Michael Hauhs
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 29 Mar 2019 15:46
Last Modified: 29 Mar 2019 15:46
URI: https://eref.uni-bayreuth.de/id/eprint/48171