Modelling hyporheic processes for regulated rivers under transient hydrological and hydrogeological conditions
Understanding the effects of major hydrogeological controls on hyporheic exchange and bank storage is essential for river water management, groundwater abstraction, restoration and ecosystem sustainability. Analytical models cannot adequately represent complex settings with, for example, transient b...
Published in: | Hydrology and Earth System Sciences |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2015
|
Subjects: | |
Online Access: | https://doi.org/10.5194/hess-19-329-2015 https://doaj.org/article/d7ed611f05904c2da597a6f02c238165 |
id |
ftdoajarticles:oai:doaj.org/article:d7ed611f05904c2da597a6f02c238165 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:d7ed611f05904c2da597a6f02c238165 2023-05-15T17:45:01+02:00 Modelling hyporheic processes for regulated rivers under transient hydrological and hydrogeological conditions D. Siergieiev L. Ehlert T. Reimann A. Lundberg R. Liedl 2015-01-01T00:00:00Z https://doi.org/10.5194/hess-19-329-2015 https://doaj.org/article/d7ed611f05904c2da597a6f02c238165 EN eng Copernicus Publications http://www.hydrol-earth-syst-sci.net/19/329/2015/hess-19-329-2015.pdf https://doaj.org/toc/1027-5606 https://doaj.org/toc/1607-7938 1027-5606 1607-7938 doi:10.5194/hess-19-329-2015 https://doaj.org/article/d7ed611f05904c2da597a6f02c238165 Hydrology and Earth System Sciences, Vol 19, Iss 1, Pp 329-340 (2015) Technology T Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 article 2015 ftdoajarticles https://doi.org/10.5194/hess-19-329-2015 2022-12-31T09:58:31Z Understanding the effects of major hydrogeological controls on hyporheic exchange and bank storage is essential for river water management, groundwater abstraction, restoration and ecosystem sustainability. Analytical models cannot adequately represent complex settings with, for example, transient boundary conditions, varying geometry of surface water–groundwater interface, unsaturated and overland flow, etc. To understand the influence of parameters such as (1) sloping river banks, (2) varying hydraulic conductivity of the riverbed and (3) different river discharge wave scenarios on hyporheic exchange characteristics such as (a) bank storage, (b) return flows and (c) residence time, a 2-D hydrogeological conceptual model and, subsequently, an adequate numerical model were developed. The numerical model was calibrated against observations in the aquifer adjacent to the hydropower-regulated Lule River, northern Sweden, which has predominantly diurnal discharge fluctuations during summer and long-lasting discharge peaks during autumn and winter. Modelling results revealed that bank storage increased with river wave amplitude, wave duration and smaller slope of the river bank, while maximum exchange flux decreased with wave duration. When a homogeneous clogging layer covered the entire river–aquifer interface, hydraulic conductivity positively affected bank storage. The presence of a clogging layer with hydraulic conductivity < 0.001 m d −1 significantly reduced the exchange flows and virtually eliminated bank storage. The bank storage return/fill time ratio was positively related to wave amplitude and the hydraulic conductivity of the interface and negatively to wave duration and bank slope. Discharge oscillations with short duration and small amplitude decreased bank storage and, therefore, the hyporheic exchange, which has implications for solute fluxes, redox conditions and the potential of riverbeds as fish-spawning locations. Based on these results, river regulation strategies can be improved by ... Article in Journal/Newspaper Northern Sweden Directory of Open Access Journals: DOAJ Articles Hydrology and Earth System Sciences 19 1 329 340 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Technology T Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
spellingShingle |
Technology T Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 D. Siergieiev L. Ehlert T. Reimann A. Lundberg R. Liedl Modelling hyporheic processes for regulated rivers under transient hydrological and hydrogeological conditions |
topic_facet |
Technology T Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 |
description |
Understanding the effects of major hydrogeological controls on hyporheic exchange and bank storage is essential for river water management, groundwater abstraction, restoration and ecosystem sustainability. Analytical models cannot adequately represent complex settings with, for example, transient boundary conditions, varying geometry of surface water–groundwater interface, unsaturated and overland flow, etc. To understand the influence of parameters such as (1) sloping river banks, (2) varying hydraulic conductivity of the riverbed and (3) different river discharge wave scenarios on hyporheic exchange characteristics such as (a) bank storage, (b) return flows and (c) residence time, a 2-D hydrogeological conceptual model and, subsequently, an adequate numerical model were developed. The numerical model was calibrated against observations in the aquifer adjacent to the hydropower-regulated Lule River, northern Sweden, which has predominantly diurnal discharge fluctuations during summer and long-lasting discharge peaks during autumn and winter. Modelling results revealed that bank storage increased with river wave amplitude, wave duration and smaller slope of the river bank, while maximum exchange flux decreased with wave duration. When a homogeneous clogging layer covered the entire river–aquifer interface, hydraulic conductivity positively affected bank storage. The presence of a clogging layer with hydraulic conductivity < 0.001 m d −1 significantly reduced the exchange flows and virtually eliminated bank storage. The bank storage return/fill time ratio was positively related to wave amplitude and the hydraulic conductivity of the interface and negatively to wave duration and bank slope. Discharge oscillations with short duration and small amplitude decreased bank storage and, therefore, the hyporheic exchange, which has implications for solute fluxes, redox conditions and the potential of riverbeds as fish-spawning locations. Based on these results, river regulation strategies can be improved by ... |
format |
Article in Journal/Newspaper |
author |
D. Siergieiev L. Ehlert T. Reimann A. Lundberg R. Liedl |
author_facet |
D. Siergieiev L. Ehlert T. Reimann A. Lundberg R. Liedl |
author_sort |
D. Siergieiev |
title |
Modelling hyporheic processes for regulated rivers under transient hydrological and hydrogeological conditions |
title_short |
Modelling hyporheic processes for regulated rivers under transient hydrological and hydrogeological conditions |
title_full |
Modelling hyporheic processes for regulated rivers under transient hydrological and hydrogeological conditions |
title_fullStr |
Modelling hyporheic processes for regulated rivers under transient hydrological and hydrogeological conditions |
title_full_unstemmed |
Modelling hyporheic processes for regulated rivers under transient hydrological and hydrogeological conditions |
title_sort |
modelling hyporheic processes for regulated rivers under transient hydrological and hydrogeological conditions |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/hess-19-329-2015 https://doaj.org/article/d7ed611f05904c2da597a6f02c238165 |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_source |
Hydrology and Earth System Sciences, Vol 19, Iss 1, Pp 329-340 (2015) |
op_relation |
http://www.hydrol-earth-syst-sci.net/19/329/2015/hess-19-329-2015.pdf https://doaj.org/toc/1027-5606 https://doaj.org/toc/1607-7938 1027-5606 1607-7938 doi:10.5194/hess-19-329-2015 https://doaj.org/article/d7ed611f05904c2da597a6f02c238165 |
op_doi |
https://doi.org/10.5194/hess-19-329-2015 |
container_title |
Hydrology and Earth System Sciences |
container_volume |
19 |
container_issue |
1 |
container_start_page |
329 |
op_container_end_page |
340 |
_version_ |
1766147731112329216 |