Investigation of hydraulics transport time scales within the Arvand River estuary, Iran

Etemad‐Shahidi, Amir; Pirnia, Mostafa; Moshfeghi, Hengameh; Lemckert, Charles James

doi:10.1002/hyp.10095

Cited by 4 publications

(2 citation statements)

References 40 publications

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“…4). These results showed that the model worked at a satisfactory level, compared with the similar numerical studies carried out in this area (e.g., Mahab-Sweco 1976; Parsa et al 2007;Etemad-Shahidi et al 2014).…”

Section: Calibration and Verification Of The Modelsupporting

confidence: 67%

Effects of sea level rise on the salinity of Bahmanshir estuary

Etemad‐Shahidi

Rohani

Parsa

et al. 2015

Int. J. Environ. Sci. Technol.

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Bahmanshir estuary, which is connected to the Persian Gulf, is one of the most important water resources in region. In this study, saltwater intrusion due to possible sea level rise in the Bahmanshir estuary was investigated. A one-dimensional hydrodynamic and water quality model was used for the simulation of the salinity intrusion and associated water quality, with measured field data being used for model calibration and verification. The verified model was then used as a virtual laboratory to study the effects of different parameters on the salinity intrusion. A coupled gas-cycle/climate model was used to generate the climate change scenarios in the studied area that showed sea level rises varying from 30 to 90 cm for 2100. The models were then combined to assess the impact of future sea level rise on the salinity distribution in the Bahmanshir estuary. Using important dimensionless numbers, a dimensionally homogenous equation was subsequently developed for the prediction of the salinity intrusion length, showing that the salinity intrusion length is inversely correlated with the discharge and directly with the sea level rise. In addition, the magnitude and frequency of the salinity standard violations at the pump station were predicted for 2100, showing that the salinity violations under climate change effects can increase to 45 % of the times at this location. This reveals the importance of this type of approach for considering future infrastructure management.

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Section: Calibration and Verification Of The Modelsupporting

confidence: 67%

Effects of sea level rise on the salinity of Bahmanshir estuary

Etemad‐Shahidi

Rohani

Parsa

et al. 2015

Int. J. Environ. Sci. Technol.

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“…The Arvand River-also known as Shatt-al-Arab-is one of the longest tidal rivers on the border of Iran-Iraq which is formed by the conjunction of the Tigris and Euphrates rivers in Iraq and Karun River in Iran (Figure 1b) [44]. Three major cities, Abadan, Khoramshahr, and Basra, are located around it (Figure 1b), with the river running mainly towards the south to reach the Persian Gulf [45]. Before discharging into the Persian Gulf (Figure 1c), the river varies from 270-2500 m in width and 9-15 m in depth, which implies that it is navigable.…”

Section: Study Areamentioning

confidence: 99%

An Integrated Resilient Sediment Transport RIsk Management (IRSTRIM) Approach for Estuaries

Zakipour

Yazdandoost

Alizad

et al. 2023

JMSE

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Estuaries around the world are facing numerous threats, including urbanization, industrialization, resource scarcity, and the impacts of climate change. To increase estuarine resilience, it is crucial to manage these ecosystems to maintain their functionality. Sediment transport resilience is a critical factor that affects the performance objectives of navigation, storm damage reduction, and ecosystem restoration. This paper focuses on an integrated resilient sediment transport risk management (IRSTRIM) approach for estuaries. The framework quantifies resilience indexes such as reaction amplitude, graduality, and recovery rates of “sediment transport” to “river and sea interaction” in the Arvand Estuary, the Persian Gulf. Additionally, three indexes, the tidal asymmetry index (TAI), saltwater intrusion vulnerability index, and infill rate, are developed to aid in resilient sediment management. The quantified indexes successfully incorporated tidal asymmetry, sediment characteristics, bed properties, and flow hydrodynamics. Different resilience and resistance management scenarios are evaluated using a decision support system. Based on the results, tidal barrier application, as a resilience scenario, is the best scenario, and the dredging scenario, as a resistance one, is the worst scenario. The reaction amplitude with a weight of 0.39, and the TAI with a weight of 0.27 are determined as the most effective indexes.

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Modeling the exposure time in a tidal system: the impacts of external domain, tidal range, and inflows

Gao

Zhao

Zhang

et al. 2018

Environ Sci Pollut Res

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Exposure time is an important characteristic for hydrodynamics that has simultaneous impacts on the biochemical processes in tidal systems. To eliminate man-made errors, decrease computational effort, and increase simulation efficiency, exposure time was evaluated under different hydrodynamic conditions for a bay to investigate the impact of the external domain on the accuracy of the computational results for exposure time. The exposure time was explicitly defined and computed using a hydrodynamic model and tracer experiments for a set of ten external domain sizes (EDS), five external domain lengths (EDL), and three special hydrodynamic conditions. The results indicated that the external domain had a significant influence on the exposure time, and the intensity of this influence was related to hydrodynamic conditions. The sensitivity of the exposure time to the external domain increased with increasing tidal range, while freshwater inflows decreased this sensitivity. However, the variation trends for exposure time with different EDS and EDL were independent of the hydrodynamic conditions. Considering the computational efficiency (maximum), the calculated error (minimum) of the exposure time, and the impact of the boundary conditions (minimum), the recommended EDS and EDL range from 9 to 13 times the initial domain size and 1.30 to 1.45 times the length in the bay, respectively. The research regarding exposure time and external domains not only helps to eliminate the errors caused by man-made factors and reduce the computational effort but also provides a reference for understanding the interrelationship between coastal waters, reciprocating flow, and the water environment.

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Investigation of hydraulics transport time scales within the Arvand River estuary, Iran

Cited by 4 publications

References 40 publications

Effects of sea level rise on the salinity of Bahmanshir estuary

Effects of sea level rise on the salinity of Bahmanshir estuary

An Integrated Resilient Sediment Transport RIsk Management (IRSTRIM) Approach for Estuaries

Modeling the exposure time in a tidal system: the impacts of external domain, tidal range, and inflows

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