Dynamics of Suspended Particulate Matter in an Impounded River Under Dry and Wet Weather Conditions
Abstract The dynamics of suspended particulate matter (SPM) and SPM‐associated biological and physicochemical processes in a river vary under dry and wet weather conditions and hydraulic structures, which moves a free‐flowing river to a semi‐lacustrine environment. This study investigated the respon...
Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2023-07-01
|
| Series: | Water Resources Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2022WR033629 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849426708058341376 |
|---|---|
| author | T. T. Huynh J. Kim W. Kim J. Hur Q. N. Ho Q. Bi T. V. Bui J. J. Kim S. D. Lee Y. Y. Choi B. J. Lee |
| author_facet | T. T. Huynh J. Kim W. Kim J. Hur Q. N. Ho Q. Bi T. V. Bui J. J. Kim S. D. Lee Y. Y. Choi B. J. Lee |
| author_sort | T. T. Huynh |
| collection | DOAJ |
| description | Abstract The dynamics of suspended particulate matter (SPM) and SPM‐associated biological and physicochemical processes in a river vary under dry and wet weather conditions and hydraulic structures, which moves a free‐flowing river to a semi‐lacustrine environment. This study investigated the response of SPM dynamics and riverbed morphodynamics to climate and anthropogenic stressors based on in‐situ observations and biogeochemical analyses of river water and riverbed sediment. The biochemical analyses and flocculation tests demonstrate abundant biopolymers and high flocculation potential of the river water during the pre‐flood period with algal bloom. This might promote SPM deposition and high‐concentration sediment layer (HCSL) formation on the riverbed. The high fractions of clay minerals and organic carbon in the riverbed sediment indicate the deposition of organic‐rich biomineral flocs. Vertical turbidity profiles with “long tails” of high turbidity near the riverbed also confirmed SPM deposition and HCSL formation. However, the highly turbulent flow conditions during the post‐flood period disturbed the tails of high turbidity and homogenized the vertical profiles of turbidity, temperature, and dissolved oxygen. Additionally, terrestrial humic substances were discharged from the watershed during this period, increasing the deflocculation and stabilization of SPM but decreasing deposition on the riverbed, thereby reducing the fractions of clay minerals and organic carbon in the sediment. This study demonstrated the interaction mechanism of SPM dynamics and riverbed morphodynamics with hydrological and biogeochemical processes in an impounded river under dry and wet weather conditions. The findings provide insights into water resource management to deal with climate change and anthropogenic stressors. |
| format | Article |
| id | doaj-art-053a5d4993a44f8e882397bb0813dcf7 |
| institution | Kabale University |
| issn | 0043-1397 1944-7973 |
| language | English |
| publishDate | 2023-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Water Resources Research |
| spelling | doaj-art-053a5d4993a44f8e882397bb0813dcf72025-08-20T03:29:18ZengWileyWater Resources Research0043-13971944-79732023-07-01597n/an/a10.1029/2022WR033629Dynamics of Suspended Particulate Matter in an Impounded River Under Dry and Wet Weather ConditionsT. T. Huynh0J. Kim1W. Kim2J. Hur3Q. N. Ho4Q. Bi5T. V. Bui6J. J. Kim7S. D. Lee8Y. Y. Choi9B. J. Lee10Department of Advanced Science and Technology Convergence Kyungpook National University Sangju KoreaEnergy Environment Institute Kyungpook National University Sangju KoreaDepartment of Advanced Science and Technology Convergence Kyungpook National University Sangju KoreaDepartment of Environment and Energy Sejong University Seoul KoreaEnergy Environment Institute Kyungpook National University Sangju KoreaDepartment of Ecosystems & Sediment Dynamics Deltares Delft The NetherlandsFaculty of Geology and Petroleum Engineering Ho Chi Minh University of Technology Ho Chi Minh City VietnamDepartment of Environmental Earth and Science Andong National University Andong KoreaNakdonggang National Institute of Biological Resources (NNIBR) Sangju KoreaEnergy Environment Institute Kyungpook National University Sangju KoreaDepartment of Advanced Science and Technology Convergence Kyungpook National University Sangju KoreaAbstract The dynamics of suspended particulate matter (SPM) and SPM‐associated biological and physicochemical processes in a river vary under dry and wet weather conditions and hydraulic structures, which moves a free‐flowing river to a semi‐lacustrine environment. This study investigated the response of SPM dynamics and riverbed morphodynamics to climate and anthropogenic stressors based on in‐situ observations and biogeochemical analyses of river water and riverbed sediment. The biochemical analyses and flocculation tests demonstrate abundant biopolymers and high flocculation potential of the river water during the pre‐flood period with algal bloom. This might promote SPM deposition and high‐concentration sediment layer (HCSL) formation on the riverbed. The high fractions of clay minerals and organic carbon in the riverbed sediment indicate the deposition of organic‐rich biomineral flocs. Vertical turbidity profiles with “long tails” of high turbidity near the riverbed also confirmed SPM deposition and HCSL formation. However, the highly turbulent flow conditions during the post‐flood period disturbed the tails of high turbidity and homogenized the vertical profiles of turbidity, temperature, and dissolved oxygen. Additionally, terrestrial humic substances were discharged from the watershed during this period, increasing the deflocculation and stabilization of SPM but decreasing deposition on the riverbed, thereby reducing the fractions of clay minerals and organic carbon in the sediment. This study demonstrated the interaction mechanism of SPM dynamics and riverbed morphodynamics with hydrological and biogeochemical processes in an impounded river under dry and wet weather conditions. The findings provide insights into water resource management to deal with climate change and anthropogenic stressors.https://doi.org/10.1029/2022WR033629suspended particulate matterorganic matterbiologically mediated flocculationdeposition and resuspensionclimate changehuman intervention |
| spellingShingle | T. T. Huynh J. Kim W. Kim J. Hur Q. N. Ho Q. Bi T. V. Bui J. J. Kim S. D. Lee Y. Y. Choi B. J. Lee Dynamics of Suspended Particulate Matter in an Impounded River Under Dry and Wet Weather Conditions Water Resources Research suspended particulate matter organic matter biologically mediated flocculation deposition and resuspension climate change human intervention |
| title | Dynamics of Suspended Particulate Matter in an Impounded River Under Dry and Wet Weather Conditions |
| title_full | Dynamics of Suspended Particulate Matter in an Impounded River Under Dry and Wet Weather Conditions |
| title_fullStr | Dynamics of Suspended Particulate Matter in an Impounded River Under Dry and Wet Weather Conditions |
| title_full_unstemmed | Dynamics of Suspended Particulate Matter in an Impounded River Under Dry and Wet Weather Conditions |
| title_short | Dynamics of Suspended Particulate Matter in an Impounded River Under Dry and Wet Weather Conditions |
| title_sort | dynamics of suspended particulate matter in an impounded river under dry and wet weather conditions |
| topic | suspended particulate matter organic matter biologically mediated flocculation deposition and resuspension climate change human intervention |
| url | https://doi.org/10.1029/2022WR033629 |
| work_keys_str_mv | AT tthuynh dynamicsofsuspendedparticulatematterinanimpoundedriverunderdryandwetweatherconditions AT jkim dynamicsofsuspendedparticulatematterinanimpoundedriverunderdryandwetweatherconditions AT wkim dynamicsofsuspendedparticulatematterinanimpoundedriverunderdryandwetweatherconditions AT jhur dynamicsofsuspendedparticulatematterinanimpoundedriverunderdryandwetweatherconditions AT qnho dynamicsofsuspendedparticulatematterinanimpoundedriverunderdryandwetweatherconditions AT qbi dynamicsofsuspendedparticulatematterinanimpoundedriverunderdryandwetweatherconditions AT tvbui dynamicsofsuspendedparticulatematterinanimpoundedriverunderdryandwetweatherconditions AT jjkim dynamicsofsuspendedparticulatematterinanimpoundedriverunderdryandwetweatherconditions AT sdlee dynamicsofsuspendedparticulatematterinanimpoundedriverunderdryandwetweatherconditions AT yychoi dynamicsofsuspendedparticulatematterinanimpoundedriverunderdryandwetweatherconditions AT bjlee dynamicsofsuspendedparticulatematterinanimpoundedriverunderdryandwetweatherconditions |