Quantitative relationship of runoff and tide to saltwater spilling over from the North Branch in the Changjiang Estuary: A numerical study

Wu, Hui; Zhu, Jianrong; Chen, Bingrui; Chen, Yizhong

doi:10.1016/j.ecss.2006.04.009

Cited by 88 publications

(63 citation statements)

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“…1b). Similar complexities are also found in many other estuaries in the world including the Changjiang (or Yangtze) Estuary (Wu et al, 2006;Xue et al, 2009) and the Mekong Delta (Nguyen et al, 2008). The interaction among the tributaries is an important factor in controlling mass transport in the estuaries.…”

Section: Introductionmentioning

confidence: 53%

The effect of interacting downstream branches on saltwater intrusion in the Modaomen Estuary, China

Gong

Wang

Jia

2012

Journal of Asian Earth Sciences

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Section: Introductionmentioning

confidence: 53%

The effect of interacting downstream branches on saltwater intrusion in the Modaomen Estuary, China

Gong

Wang

Jia

2012

Journal of Asian Earth Sciences

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“…This indicates that the WSO almost vanishes during neap tide. Some previous studies came to the same conclusion (Wu et al, 2006Li et al, 2010).…”

mentioning

confidence: 59%

“…Tides play an important role in saltwater intrusion. Wu et al (2006) studied the quantitative relationship of runoff and tide to WSO, indicating that its intensity increased exponentially with tidal range. Han and Lu No.2 343 QIU et al: Tide impact on saltwater intrusion (1984) found that when the river discharge at Datong Station fell below 25 000 m 3 /s and the tidal range at Qinglonggang Station was over 2.5 m, saline water began to spill over from the NB to the SB.…”

Section: Introductionmentioning

confidence: 99%

Impact of seasonal tide variation on saltwater intrusion in the Changjiang River estuary

Qiu

Zhu

Gu³

2012

Chin. J. Ocean. Limnol.

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An improved 3-D ECOM-si model was used to study the impact of seasonal tide variation on saltwater intrusion into the Changjiang River estuary, especially at the bifurcation of the North Branch (NB) and the South Branch (SB). The study assumes that the river discharge and wind are constant. The model successfully reproduced the saltwater intrusion. During spring tide, there is water and salt spillover (WSO and SSO) from the NB into the SB, and tidally averaged (net) water and salt fluxes are 985 m 3 /s and 24.8 ton/s, respectively. During neap tide, the WSO disappears and its net water flux is 122 m 3 /s. Meanwhile, the SSO continues, with net salt flux of 1.01 ton/s, much smaller than during spring tide. Because the tidal range during spring tide is smaller in June than in March, overall saltwater intrusion is weaker in June than in March during that tidal period. However, the WSO and SSO still exist in June. Net water and salt fluxes in that month are 622 m 3 /s and 15.35 ton/s, respectively, decreasing by 363 m 3 /s and 9.45 ton/s over those in March. Because tidal range during neap tide is greater in June than in March, saltwater intrusion in June is stronger than in March during that tidal period. The WSO and SSO appear in June, with net water and salt fluxes of 280 m 3 /s and 8.55 ton/s, respectively, increasing by 402 m 3 /s and 7.54 ton/s over those in March. Saltwater intrusion in the estuary is controlled by the river discharge, semi-diurnal flood-ebb tide, semi-monthly spring or neap tide, and seasonal tide variation.

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“…Figure 2 shows the model domain, which covers the entire tidal region, the Hangzhou Bay and a part of the adjacent East China Sea. Instead of taking Jiangyin as the upstream river boundary, as was done in most previous models (Wu et al 2006;Hu et al 2009), the upper limit of the present model is taken at Datong. One of the advantages of this set-up is that the upstream boundary is free from tidal effects.…”

Section: Study Area and Model Domainmentioning

confidence: 99%

A Process-Based Approach to Sediment Transport

Chu

Wang

Vriend

et al. 2011

Int. Conf. Coastal. Eng.

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A process-based model for the Yangtze Estuary is constructed to study the sediment transport in the estuary. The proposed model covers the entire tidal region of the estuary, the Hangzhou Bay and a large part of the adjacent sea. The dominant processes, fluvial and tidal, are included in the model. The calibration of the model against extensive flow, water level, salinity and suspended sediment data shows a good representation of observed phenomena. With the present calibrated and validated model, the residual flow field and the residual sediment transport field are obtained. The residual sediment transport pattern gives insight into the morphological behaviour of the mouth bars.

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Quantitative relationship of runoff and tide to saltwater spilling over from the North Branch in the Changjiang Estuary: A numerical study

Cited by 88 publications

References 1 publication

The effect of interacting downstream branches on saltwater intrusion in the Modaomen Estuary, China

The effect of interacting downstream branches on saltwater intrusion in the Modaomen Estuary, China

Impact of seasonal tide variation on saltwater intrusion in the Changjiang River estuary

A Process-Based Approach to Sediment Transport

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