Effect of climate change on long-term river geometric variation in Andong Dam watershed, Korea

Because of multifunctional weirs installed as part of large river regulation works in Korea, water quality problems have arisen from environmental changes in tandem with decreased flow rates. However, there has been limited research into the green algae removal effect, water quality improvement in c...

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Autores principales:	Jong Mun Lee, Jungkyu Ahn, Young Do Kim, Boosik Kang
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	climate change scenario river model riverbed variation suspended load watershed model Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/8a97b4e0ec4d46b78edff98603da0aa6
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spelling	oai:doaj.org-article:8a97b4e0ec4d46b78edff98603da0aa62021-11-05T18:48:05ZEffect of climate change on long-term river geometric variation in Andong Dam watershed, Korea2040-22442408-935410.2166/wcc.2020.148https://doaj.org/article/8a97b4e0ec4d46b78edff98603da0aa62021-05-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/3/741https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354Because of multifunctional weirs installed as part of large river regulation works in Korea, water quality problems have arisen from environmental changes in tandem with decreased flow rates. However, there has been limited research into the green algae removal effect, water quality improvement in congested waters, dam and weir operations, and consequential riverbed changes. Studies regarding outflow in a basin, the application and development of sediment load output analysis methods, feasibility of related dam operations, and riverbed patterns have been separately performed. However, basins and rivers should be analyzed by an integrated method instead of an individual one. Therefore, in the present study, the effect of congestion on a river connected to a dam/weir and estuary bank was analyzed based on climate change scenarios HadGEM3-RA RCP 4.5 and 8.5, with the aim of integrating individual studies using watershed and river models. Flow was controlled by dam- and weir-related discharge simulations. Variations in the riverbed caused by the transfer of suspended load in the downstream region were analyzed for both long and short durations. The results of this analysis suggest that given future climate change scenarios, the width of the river and riverbed variations in the riverbed are expected to rise. HIGHLIGHTS Impact of long-term geometric variation in rivers.; Analysis of climate change scenarios.; Integrate watershed and river.; Variations in the riverbed for both long and short durations.; Analysis of both watershed runoff and sediment transport in a river.;Jong Mun LeeJungkyu AhnYoung Do KimBoosik KangIWA Publishingarticleclimate change scenarioriver modelriverbed variationsuspended loadwatershed modelEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 3, Pp 741-758 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	climate change scenario river model riverbed variation suspended load watershed model Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	climate change scenario river model riverbed variation suspended load watershed model Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Jong Mun Lee Jungkyu Ahn Young Do Kim Boosik Kang Effect of climate change on long-term river geometric variation in Andong Dam watershed, Korea
description	Because of multifunctional weirs installed as part of large river regulation works in Korea, water quality problems have arisen from environmental changes in tandem with decreased flow rates. However, there has been limited research into the green algae removal effect, water quality improvement in congested waters, dam and weir operations, and consequential riverbed changes. Studies regarding outflow in a basin, the application and development of sediment load output analysis methods, feasibility of related dam operations, and riverbed patterns have been separately performed. However, basins and rivers should be analyzed by an integrated method instead of an individual one. Therefore, in the present study, the effect of congestion on a river connected to a dam/weir and estuary bank was analyzed based on climate change scenarios HadGEM3-RA RCP 4.5 and 8.5, with the aim of integrating individual studies using watershed and river models. Flow was controlled by dam- and weir-related discharge simulations. Variations in the riverbed caused by the transfer of suspended load in the downstream region were analyzed for both long and short durations. The results of this analysis suggest that given future climate change scenarios, the width of the river and riverbed variations in the riverbed are expected to rise. HIGHLIGHTS Impact of long-term geometric variation in rivers.; Analysis of climate change scenarios.; Integrate watershed and river.; Variations in the riverbed for both long and short durations.; Analysis of both watershed runoff and sediment transport in a river.;
format	article
author	Jong Mun Lee Jungkyu Ahn Young Do Kim Boosik Kang
author_facet	Jong Mun Lee Jungkyu Ahn Young Do Kim Boosik Kang
author_sort	Jong Mun Lee
title	Effect of climate change on long-term river geometric variation in Andong Dam watershed, Korea
title_short	Effect of climate change on long-term river geometric variation in Andong Dam watershed, Korea
title_full	Effect of climate change on long-term river geometric variation in Andong Dam watershed, Korea
title_fullStr	Effect of climate change on long-term river geometric variation in Andong Dam watershed, Korea
title_full_unstemmed	Effect of climate change on long-term river geometric variation in Andong Dam watershed, Korea
title_sort	effect of climate change on long-term river geometric variation in andong dam watershed, korea
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/8a97b4e0ec4d46b78edff98603da0aa6
work_keys_str_mv	AT jongmunlee effectofclimatechangeonlongtermrivergeometricvariationinandongdamwatershedkorea AT jungkyuahn effectofclimatechangeonlongtermrivergeometricvariationinandongdamwatershedkorea AT youngdokim effectofclimatechangeonlongtermrivergeometricvariationinandongdamwatershedkorea AT boosikkang effectofclimatechangeonlongtermrivergeometricvariationinandongdamwatershedkorea
_version_	1718444110930509824

Effect of climate change on long-term river geometric variation in Andong Dam watershed, Korea

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