A Study on Variation in Channel Width and Braiding Intensity of the Brahmaputra River in Assam, India

Sarma, J. N.; Acharjee, Shukla

doi:10.3390/geosciences8090343

Cited by 30 publications

(22 citation statements)

References 23 publications

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“…Crosato 14 derived a predictor for the number of bars per cross-section. Jogendra Nath Sarma 15 presented study, the braiding intensity is estimated by using the braiding index (BI).…”

Section: Methodologiesmentioning

confidence: 99%

Hydrodynamics of braiding river

Ruey¹

2021

IJH

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Braided river reaches and alluvial systems are characterized by their multi-threaded planform and agents of sediment transport due to eroding and deposing to form the bars and riffles. In braided river, frequent sediment transport and the quick shifting of the positions about the river channel induce many attentions discussion and relating a complicated consideration of the combinations of disciplines. In this article we introduce its fundamental characteristics and further the complicated mechanism in the literature and methodologies. The braided channel ecology and the management of braided river are mentioned and discussed, especially, the secondary currents, in this paper we explain in detail, the combinations on multiplying of 2-D flow of the velocity fluctuations. The interdisciplinary approach on linking engineers, earth scientists and social scientists concerned with environmental economics, planning, and societal and political strategies in order to fully evaluate the validity and reliability of different selections to various timescales is really sensitive. Furthermore, the requirements of public education on reinforcing about the mechanism of braided river formation will be obviously important and necessary.

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“…Crosato 14 derived a predictor for the number of bars per cross-section. Jogendra Nath Sarma 15 presented study, the braiding intensity is estimated by using the braiding index (BI).…”

Section: Methodologiesmentioning

confidence: 99%

Hydrodynamics of braiding river

Ruey¹

2021

IJH

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“…The Brahmaputra within India was also well studied by various researchers, especially in the last decade (Sarkar et al , 2012;Sarma and Acharjee, 2018;Saikia et al, 2019). Sarkar et al (2012) in an erosion and deposition assessment for eighteen years (1990)(1991)(1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008) of Brahmaputra River in Assam (India).…”

Section: Introductionmentioning

confidence: 99%

“…Sarkar et al (2012) in an erosion and deposition assessment for eighteen years (1990)(1991)(1992)(1993)(1994)(1995)(1996)(1997)(1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008) of Brahmaputra River in Assam (India). Sarma and Acharjee (2018) estimated the braiding index and channel width of Brahmaputra at every 5-minute longitudinal interval within Assam. They found a positive correlation between channel width and braiding index, indicating an increase in braiding index with increasing channel width.…”

Section: Introductionmentioning

confidence: 99%

“…The chronic nature of the Brahmaputra River dynamics has engendered further exploration and research into the causative factors. Many researchers underlined structural controls, tectonic and seismic activities as factors that primarily triggered morphological adjustment of Brahmaputra River in the recent past (Morgan and McIntire, 1959;Coleman, 1969;Sarma, 2005;Das and Saraf, 2007;Best et al, 2007;Lahiri and Sinha, 2012;Sarkar et al , 2012;Sarma and Acharjee, 2012a;Sarker et al, 2014;Lahiri and Sinha, 2014;Sarkar, 2017;Sarma and Acharjee, 2018). Researchers have tried to investigate links between structural controls, avulsion, and bankline dynamics of the river (Winkley et al, 1994;Lahiri and Sinha, 2014).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Major elements of morphological dynamics in the Brahmaputra River

Sah

Kumar

Das

et al. 2022

Preprint

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This paper documents the bankline dynamics of the Brahmaputra River along the India and Bangladesh region during the period 1976 to 2018. Multiple approaches, including satellite image-based interpretations, fieldwork, and meta-analysis, are performed to explore the factors responsible for the morphological dynamics of the river. Results suggest that the Brahmaputra River has lost ~2686 sq. km of land in the last four decades. Brahmaputra river has also widened ~1.7 km (mean value over the studied reach) during the period. We identified five active erosional sections along the river. The high erosions along these sections are promoted by the past avulsion and the lowlands areas in the floodplain of Brahmaputra. Interestingly, progressive erosions along the active sections of the Brahmaputra River have been sustained for decades to centuries. Sustained and dominant peripheral second order channels (dominant channels) have largely decided such progressive erosions. Interpretation based on historical maps suggests that the observed morphological changes of the Brahmaputra River are the continuation of the river’s recent planform evolution that can be traced back to 2-3 centuries. These rapid morphological changes in Brahmaputra River are conceivably due to high sediment flux, where seismic activities look to be a pragmatic factor.

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“…anomalies, suggest an active tectonic control of the blind thrust of the chain on the development and evolution of the drainage network. Sarma and Acharjee (2018) [6] introduced a large amount of data about the spatial and temporal distribution of width and braiding index of the Brahmaputra River, Asia. Morphometric indexes have been evaluated using topographic maps of 1912-1928 and 1963-1975, and dry season satellite data of 1996, 2000, 2007, and 2009 in order to infer the external factor controls and possible management plans.…”

mentioning

confidence: 99%