A. Samadi

Imam Khomeini International University

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Co-Authors

E. Amiri-Tokaldany

University of Tehran

Azam Masoodi

University of Giessen

Mohammad Reza Majdzadeh Tabatabai

Shahid Beheshti University

Ali Noorzad

Shahid Beheshti University

Stephen E. Darby

University of Southampton

M H Davoudi

Takestan Islamic Azad University

Seyed Hossein Mohajeri

Kharazmi University

M Kholghi

University of Tehran

E Amiri Tokaldani

Hadiseh Hasani

Tafresh University

Cooperative Institutions

University of Tehran

Kharazmi University

Islamic Azad University, Science and Research Branch

Iran University of Science and Technology

Shahid Beheshti University

Islamic Azad University, Tehran

University of Southampton

Tafresh University

Islamic Azad University North Tehran Branch

Tarbiat Modares University

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Remote sensing insights into water allocation and evaporation challenges in the Hirmand River Basin, after the operation of Kamal Khan Dam

Journal of Hydrology Regional Studies (2024)

Saeid Maleki Seyed Hossein Mohajeri A. Samadi Hadiseh Hasani Mehry Akbary

10.1016/j.ejrh.2024.101996

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Citations (0)

Identifying the effects of parameter uncertainty on the reliability of riverbank stability modelling

Geomorphology (2008)

A. Samadi E. Amiri-Tokaldany Stephen E. Darby

Safety factor

Bank failure

Bank

Factor of safety

10.1016/j.geomorph.2008.10.019

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Citations (36)

Identifying TSM dynamics in arid inland lakes combining satellite imagery and wind speed

Journal of Hydrology (2024)

Ashkan Noori Yusef Kheyruri Ahmad Sharafati Seyed Hossein Mohajeri Mojtaba Mehrain

10.1016/j.jhydrol.2024.132423

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Citations (2)

Riverbank Stability under the Influence of Soil Dispersion Phenomenon

Journal of Hydrologic Engineering (2019)

Azam Masoodi Mohammad Reza Majdzadeh Tabatabai Ali Noorzad A. Samadi

Erosion is one of the key factors in environmental management and river restoration. Different mechanisms influence riverbank stability and mass failure, such as seepage erosion. The present study investigates the effects of soil dispersion as one of the soil chemical properties on seepage erosion to evaluate the instability criterion for riverbanks. The middle Atrak River in Iran, where extensive riverbank erosion, seepage cavity, and lumped mass failure have been observed, was selected as a case study. Results indicated that there was significant correlation (r=0.90) between the soil dispersion and the volume of the seepage undercutting cavity. Further, the results of numerical simulations suggested that where the depth of the undercutting cavity was large, the safety factor of riverbank stability was about 25% less than that at a location with less undercutting. Attempts were also made to understand the effects of groundwater level on the stability of eroded riverbanks due to seepage. It was also observed that in locations with larger cavity dimensions, an increase in subsurface water table up to 3 m may cause the safety factor to be 5% higher than that at locations with smaller cavity dimensions, although this value is not significant in geotechnical engineering.

Safety factor

Factor of safety

10.1061/(asce)he.1943-5584.0001756

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Citations (25)

Analytical solution of reactive hybrid cells in series (HCIS) model for pollution transport through the rivers

Hydrological Sciences Journal (2020)

Jafar Chabokpour A. Samadi

The application of accurate transport models is critical in tracer routing through river reaches. Reactive models are widely used because of the reaction and degradation properties of some pollutants with bed and bank materials, and cell-based theoretical models are among the most popular for contaminant transport simulation. This study investigates the reactive form of cells in a series model. A new analytical equation is proposed that includes a degradation term for sudden mass release in a river reach. To consider the inaccuracy of previously proposed equations, we attempted to rearrange separate transport actions such as advection, dispersion and degradation through the cells of a length unit. The cell residence times of mixed cells were equated, and the degradation action was only forced to the second cell. The parameter number of the solution was lower than in previously proposed models. Synthetic datasets of the advection–dispersion–degradation equation were used to examine model performance. The model was found to work well in the first and later units. The numerical convolution method was used in the second to fourth units, and it also fitted synthetic data. The previously proposed equation of reactive HCISD was imprecise in the convolution method.

Degradation

Convolution (computer science)

Convection–diffusion equation

TRACER

10.1080/02626667.2020.1810855

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Citations (1)

Experimental and numerical investigation of the stability of overhanging riverbanks

Geomorphology (2012)

A. Samadi E. Amiri-Tokaldany M H Davoudi Stephen E. Darby

Replicate

Failure mechanism

10.1016/j.geomorph.2012.03.033

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Citations (58)

Identifying the effects of parameter uncertainty on the reliability of modeling the stability of overhanging, multi-layered, river banks

Geomorphology (2011)

A. Samadi E. Amiri-Tokaldany M H Davoudi Stephen E. Darby

Bank failure

Bank erosion

Factor of safety

Safety factor

10.1016/j.geomorph.2011.08.004

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Citations (25)

Application of short-range photogrammetry for monitoring seepage erosion of riverbank by laboratory experiments

Journal of Hydrology (2018)

Azam Masoodi Ali Noorzad Mohammad Reza Majdzadeh Tabatabai A. Samadi

Laser Scanning

Bank erosion

10.1016/j.jhydrol.2018.01.051

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Citations (22)

Effects of soil physico-chemical properties on stream bank erosion induced by seepage in northeastern Iran

Hydrological Sciences Journal (2017)

Azam Masoodi Mohammad Reza Majdzadeh Tabatabai Ali Noorzad A. Samadi

Internal erosion in composite stream banks can have negative effects on agricultural lands due to seepage, which can be affected by soil properties. We document the effects of physical and chemical properties of bank materials on the dimensions of cavities caused by internal erosion along the middle reach of the Atrak River. The goals were to (1) identify physico-chemical soil factors, (2) select significant factors affecting cavity dimensions, and (3) identify soil properties that could be used as indicators for future soil quality conservation programmes. Soil samples from nine locations with, on average, 25 cavities per 100 m, along a 50-km reach of the river were analysed. Using discriminant and factor analyses, five principal soil factors were identified, among which soil dispersion and Ca2+ content most influenced cavity dimensions. The sodium adsorption ratio and total dissolved salts for the non-cohesive layer were found to be the most important quality-related properties.

Soil test

Soil Quality

Sodium adsorption ratio

Bank

10.1080/02626667.2017.1403030

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Citations (38)

EXTENSIVE MODEL OF STABILITY ANALYSIS OF RIVERBANKS

A. Samadi E Amiri Tokaldani Hasan Rahimi

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