Impact of groyne on channel morphology and sedimentology in an ephemeral alluvial river of Bengal Basin

Malik, Sadhan; Pal, Subodh Chandra

doi:10.1007/s12665-019-8642-0

Cited by 7 publications

(2 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A temporal distribution of the Dwarkeswar River gauge height near Arambag station is shown in Fig. 3c, and indicates that the river exhibits sudden flow changes (Malik and Pal, 2019b).…”

Section: Lower Alluvial Plainmentioning

confidence: 98%

Downstream Decreasing Channel Capacity of a Monsoon-dominated Bengal Basin River: A Case Study of Dwarkeswar River, Eastern India

Malik

Chandra

2020

Chin. Geogr. Sci.

Self Cite

View full text Add to dashboard Cite

Downstream changes in channel morphology and flow over the ephemeral Dwarkeswar River in the western part of the Bengal Basin, eastren India were investigated. The river stretches from the Proterozoic Granite Gneiss Complex to the recent Holocene alluvium, forming three distinctive geomorphological regions across the river basin: the pediplane and upper and lower alluvial areas. Sixty cross-sections from throughout the main trunk stream were surveyed and the bankfull width, depth, cross-sectional area, and maximum depth were measured. Sediment samples from each location were studied and the flow velocity, stream power, Manning's roughness coefficient, and shear stress were estimated. The results show that the bankfull channel cross-section area, width, width-to-depth ratio, and channel capacity increased between the beginning and middle of the river. Thereafter, the size of the river started to decrease in the lower alluvial area. This was characterized by gentle gradients, cohesive bank materials with grass cover, and channel switching. Within the lower part of the river, the channel capacity was observed to diminish as the drainage area increased. This increased the bankfull flow frequency and accelerated large floodwater losses in the floodplain via overbank flows and floodways.

show abstract

“…A temporal distribution of the Dwarkeswar River gauge height near Arambag station is shown in Fig. 3c, and indicates that the river exhibits sudden flow changes (Malik and Pal, 2019b).…”

Section: Lower Alluvial Plainmentioning

confidence: 98%

Downstream Decreasing Channel Capacity of a Monsoon-dominated Bengal Basin River: A Case Study of Dwarkeswar River, Eastern India

Malik

Chandra

2020

Chin. Geogr. Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…According to the summary of different works done by Malik S. [5] groynes represent a viable solution to enhance channel navigation. The summary also shows that after the implementation of groynes the overall channel area has decreased roughly with about 35% of its initial width prior to groynes construction, but at the same time found that the erosional capability of the river has increased in the downward direction which help defining the fairway.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic and sediment transport modelling for channel bed stabilization

Stancu

2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Sediment transport plays an important role in the overall process of navigation along the rivers, as it shapes the fairway continuously. This paper aims to present the partial results obtained in the PhD research regarding measures to be used in order to help stabilize the channel bed. The measures have been proposed and tested based on a calibrated and validated 2-dimensional hydrodynamic and sediment transport model. The results show the influence of the proposed measures along the river channel in comparison to the situation where no measures would be taken at all. Furthermore it can help understand the river and sediment dynamics in order to make the best decision upon the location, orientation, geometry and other properties of the proposed measures.

show abstract

Channel planform dynamics, avulsion and bankline migration: a study in the monsoon-dominated Dwarkeswar river, Eastern India

Ghosh

Mukhopadhyay

2021

Arab J Geosci

View full text Add to dashboard Cite

Impact of groyne on channel morphology and sedimentology in an ephemeral alluvial river of Bengal Basin

Cited by 7 publications

References 44 publications

Downstream Decreasing Channel Capacity of a Monsoon-dominated Bengal Basin River: A Case Study of Dwarkeswar River, Eastern India

Downstream Decreasing Channel Capacity of a Monsoon-dominated Bengal Basin River: A Case Study of Dwarkeswar River, Eastern India

Hydrodynamic and sediment transport modelling for channel bed stabilization

Channel planform dynamics, avulsion and bankline migration: a study in the monsoon-dominated Dwarkeswar river, Eastern India

Contact Info

Product

Resources

About