Annual Characteristics of Runoff and Sediment in West River and North River Delta and Their Influencing Factors

The analysis of annual characteristics of runoff and sediment based on the monthly measured hydrological data of Makou Station and Sanshui Station in the West River and North River delta over the past 50 years.It shows that the monthly runoff,sediment discharge,and sediment concentration of Makou St...

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Main Authors: ZHANG Yonghua, LU Yongqiu
Format: Article
Language:zho
Published: Editorial Office of Pearl River 2023-01-01
Series:Renmin Zhujiang
Subjects:
Online Access:http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2023.08.006
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author ZHANG Yonghua
LU Yongqiu
author_facet ZHANG Yonghua
LU Yongqiu
author_sort ZHANG Yonghua
collection DOAJ
description The analysis of annual characteristics of runoff and sediment based on the monthly measured hydrological data of Makou Station and Sanshui Station in the West River and North River delta over the past 50 years.It shows that the monthly runoff,sediment discharge,and sediment concentration of Makou Station and Sanshui Station are obviously of the “unimodal type”,with runoff and sediment concentrated in June and July during the flood season.The annual concentration ratio of runoff and sediment in the West River and North River delta is high with a decreasing trend,while the concentration period is concentrated in early July with a slight delay.The interannual variation trend of runoff and sediment in the West River and North River delta is mainly controlled by the variation of flood season and is affected to some extent by the regulation of the non-flood period.There is a consistent interannual trend of runoff with precipitation,but the annual concentration ratio is more affected by hydraulic engineering.Sand excavation in river channels affects the distribution of runoff and sediment by changing the diversion ratio of runoff and sediment.
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publishDate 2023-01-01
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spelling doaj-art-834d5d0d98dd42f88dcb8d8523260bed2025-01-15T02:22:30ZzhoEditorial Office of Pearl RiverRenmin Zhujiang1001-92352023-01-014447639377Annual Characteristics of Runoff and Sediment in West River and North River Delta and Their Influencing FactorsZHANG YonghuaLU YongqiuThe analysis of annual characteristics of runoff and sediment based on the monthly measured hydrological data of Makou Station and Sanshui Station in the West River and North River delta over the past 50 years.It shows that the monthly runoff,sediment discharge,and sediment concentration of Makou Station and Sanshui Station are obviously of the “unimodal type”,with runoff and sediment concentrated in June and July during the flood season.The annual concentration ratio of runoff and sediment in the West River and North River delta is high with a decreasing trend,while the concentration period is concentrated in early July with a slight delay.The interannual variation trend of runoff and sediment in the West River and North River delta is mainly controlled by the variation of flood season and is affected to some extent by the regulation of the non-flood period.There is a consistent interannual trend of runoff with precipitation,but the annual concentration ratio is more affected by hydraulic engineering.Sand excavation in river channels affects the distribution of runoff and sediment by changing the diversion ratio of runoff and sediment.http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2023.08.006annual characteristics of runoff and sedimentconcentration period and concentration ratio methodMann-Kendall trend testWest River and North River delta
spellingShingle ZHANG Yonghua
LU Yongqiu
Annual Characteristics of Runoff and Sediment in West River and North River Delta and Their Influencing Factors
Renmin Zhujiang
annual characteristics of runoff and sediment
concentration period and concentration ratio method
Mann-Kendall trend test
West River and North River delta
title Annual Characteristics of Runoff and Sediment in West River and North River Delta and Their Influencing Factors
title_full Annual Characteristics of Runoff and Sediment in West River and North River Delta and Their Influencing Factors
title_fullStr Annual Characteristics of Runoff and Sediment in West River and North River Delta and Their Influencing Factors
title_full_unstemmed Annual Characteristics of Runoff and Sediment in West River and North River Delta and Their Influencing Factors
title_short Annual Characteristics of Runoff and Sediment in West River and North River Delta and Their Influencing Factors
title_sort annual characteristics of runoff and sediment in west river and north river delta and their influencing factors
topic annual characteristics of runoff and sediment
concentration period and concentration ratio method
Mann-Kendall trend test
West River and North River delta
url http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2023.08.006
work_keys_str_mv AT zhangyonghua annualcharacteristicsofrunoffandsedimentinwestriverandnorthriverdeltaandtheirinfluencingfactors
AT luyongqiu annualcharacteristicsofrunoffandsedimentinwestriverandnorthriverdeltaandtheirinfluencingfactors