Sedimentation under variable shear stress at lower reach of the Rupnarayan River, West Bengal, India

Maity, Swapan Kumar; Maiti, Ramkrishna

doi:10.1016/j.wsj.2017.02.001

Cited by 10 publications

(9 citation statements)

References 14 publications

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“…Ultimately, these conditions result in the formation of sandbars or a delta at the river mouth (Sukardi et al, 2013). Sedimentation problem is not unique to Bengawan Solo River; a similar problem has been reported in some rivers around the world: Rupnarayan River in India (Maity & Maiti, 2017), Gorai River in Bangladesh (Rahman & Yunus, 2016), Yellow River in China (Liu et al, 2013), and Parana River in Argentina (Paarlberg et al, 2015).…”

Section: Introductionmentioning

confidence: 56%

“…Although previous studies considered the same problem (e.g. Liu et al, 2013;Maity & Maiti, 2017;Rahman & Yunus, 2016;and Paarlberg et al, 2015), they did not focus on this subject. During fieldwork, in the context of this research, soil samples were taken from locations with predominant sediment deposition and characterized and tested to obtain their properties.…”

Section: Introductionmentioning

confidence: 99%

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Sediment consolidation in ephemeral river: the effect of applied loading on soil properties and dredging method selection

Soemitro

Adriati

Warnana

et al. 2020

International Journal of River Basin Management

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Bengawan Solo River, a typical large ephemeral river in Indonesia, is facing stream problems induced by the erosion and deposition of sediment. Imbalance between these two phenomena on the riverbed can lead to excessive sedimentation, increased risk of flooding, and formation of sandbars. One proposed solution to address this problem is dredging. However, this process can have potential negative effects on the environment, such as removal or destruction of the biota in the dredged materials, increased turbidity, as well as coverage of the benthos in the vicinity. Also, different dredging methods are needed to suit sediments with different properties. Therefore, the knowledge of the deposited sediment properties is required so that appropriate methods can be selected. The sediment characteristics were obtained by performing laboratory tests on physical and consolidation properties and shear strength tests of a soil sample. The results indicate that the materials were broadly grouped into sandy sediment in downstream areas and clayey sediment in estuary areas. The distribution of sediment properties varies with depth because of subsequent erosion and deposition over time. Additionally, the distribution also shows that sand content decreases as the origin of sample approaches estuary areas. Erosion is predominant at locations with small hydraulic radius and high flow velocity, mostly at downstream areas, whereas deposition is predominant at locations with a large hydraulic radius and low flow velocity, specifically at estuary areas. The shear strength increases as the loads imposed by the self-weight of sediment layer increase. The analysis suggests that sediments cannot be eroded naturally as they have a shear strength that exceeds the small-capacity dredging method (t. 20 kPa); therefore, the removal of excess sediment in such areas requires dredging methods of larger capacities (such as grab dredger).

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Section: Introductionmentioning

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Sediment consolidation in ephemeral river: the effect of applied loading on soil properties and dredging method selection

Soemitro

Adriati

Warnana

et al. 2020

International Journal of River Basin Management

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“…This problem makes the system highly hazardous during rainy season. During this time, huge discharge with massive velocity increases the amount of river water and creates huge pressure on the Kaljani River bank (Maity andMaiti, 2017, Bjorklund, 2015).This study area is the most sensitive zone of geomorphic transition that is clear. Here a lot of geomorphic processes are going on.…”

Section: Discussionmentioning

confidence: 93%

Spatial modeling of river bank shifting and associated LULC changes of the Kaljani River in Himalayan foothills

Hasanuzzaman¹,

Gayen

Haque

et al. 2022

Stoch Environ Res Risk Assess

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Channel dynamics is an inherent characteristic of the river in the floodplain region. The river bankline shifting and associate land use land cover (LULC) change is not only geomorphological but also an environmentally vital hazardous issue. It is a significant impact on the ecosystem and human life. GISbased, DSAS and CA-Markov models are efficient to accurately measure historical and predictionevaluation of the relation between channel shifting and LULC change. In this study, forty-eight years (1972-2020) of earth observatory data have been used to demarcate the channel bank position and LULC change detection along the Kaljani River at the eastern Himalayan foothill. During 1998-2008, very high erosion rate on both bankline, which are about -4.48 m/y and -3.48 m/y at the left and right, respectively compared the others time frame. The overall result of the predicted bankline represents that the bulky expansion will occur along the left bank and sediment accretion will take place at the right bank. Among the three zones, both banks of zone 'A' (lower part of the river) is the worst affected part in the past, present, and future time. The LULC change of all six classes from 1972 to 1998 was very high when compared with the change between 1998 and 2020. Moreover, the long profile, hypsometric curve value, and the Soil Conservation Service Curve Number (SCS-CN) value have been a significant help in understanding and identification of consequences reasons. The level of accuracy is validated by the observed bankline positions (2020) with predicted bankline (2020) and observed LULC (2020) to predicted LULC (2020) empirically with RMSE and statistical test. Therefore, the output of the prediction not only serves as the spatial guidelines for monitoring future trends of channel shifting and land use planning management.

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“…The result of skewness calculations in each sample shown in Table 9 found that the skewness value of the research area is nearly symmetrical to fine skewed. Maity and Maiti (2016) in Atat et al (2021) said that skewed values that are close to negative or tend to be small are associated with high energy environment [12] [10]. It is shown by fifth to eight samples in Figure 5 that the skewness value is decreasing and related with the decreasing current strength from the water as fluvial medium.…”

Section: Figure 3 Mean Parameter Graphmentioning

confidence: 99%

Sediment Deposits Texture Analysis of Besuk Kobokan River in the Northern Slope Semeru Volcano Lumajang

Suriani,

Fajar,

Ariyanti

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The flow of volcanic material from Semeru Volcano as one of the most active volcano on Java Island is still flowing and deposited along the Besuk Kobokan River which empties into Bambang Beach, Lumajang. The sediments as volcanic products are transported through the river environment with water as its transport agent. This transportation and deposition process has certain grain texture characteristics that can be identified through granulometry analysis. Geological observations and sediment sampling were carried out at 8 points along the Besuk Kobokan River. Granulometry analysis aims to identify the grain texture distribution of Semeru Volcano sediments that have been transported. The results of granulometric analysis that can identify the distribution of grain texture show that the first point to the fifth point at the sampling location was influenced by lahars flow and pyroclastic flow, resulting in randomness in grain size and rock texture. While the sixth to eighth points show the fluvial sedimentation process.

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Sedimentation under variable shear stress at lower reach of the Rupnarayan River, West Bengal, India

Cited by 10 publications

References 14 publications

Sediment consolidation in ephemeral river: the effect of applied loading on soil properties and dredging method selection

Sediment consolidation in ephemeral river: the effect of applied loading on soil properties and dredging method selection

Spatial modeling of river bank shifting and associated LULC changes of the Kaljani River in Himalayan foothills

Sediment Deposits Texture Analysis of Besuk Kobokan River in the Northern Slope Semeru Volcano Lumajang

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