Examining the complexity of discharge-suspended sediment behaviour of a tropical monsoon-dominated river, India

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies Pub Date : 2025-03-25 DOI:10.1016/j.ejrh.2025.102335

Balai Chandra Das , Aznarul Islam , Sadik Mahammad , Edris Alam , Abu Reza Md Towfiqul Islam , Biplab Sarkar , Suman Deb Barman , Subodh Chandra Pal , Md Kamrul Islam

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引用次数: 0

Abstract

Study region

Multiple gauging stations of the Brahmani River Basin, India.

Study focus

This study provides an understanding of sediment transport complexities in monsoon-type rivers and supports informed decision-making for effective river management and environmental conservation. It also underscores the impact of surface landscape, the management of reservoirs and the role of anthropogenic impacts on sediment transport dynamics.

New hydrological insights for the region

River discharge and sediment concentration are measured at four gauging stations of Brahmani River: Tilga, Panposh, Gomlai, and Jenapur. The first three are located in the upper reaches above the Rengali Dam, while Jenapur is in the plain area below the dam. The analysis reveals diverse correlations for fine sediment (<0.075 mm), ranging from linear at Tilga to logarithmic at Panposh and power-law at Gomlai. Medium sediment (0.075–0.2 mm) exhibits linear and logarithmic correlations at Tilga and Panposh while coarse sediment (>0.2 mm) displays logarithmic correlations at Panposh and Gomlai. Total sediment concentrations showcase both linear and logarithmic relationships at Tilga and Panposh, indicating the complexity of sediment-transport dynamics. The study unveils compelling relationships between river discharge and total sediment load (MT/day), with notable power-lla correlations at Gomlai, emphasising the influence of river discharge variations on sediment transport quantity. It underscores the impact of surface geology, the location of reservoirs and the role of anthropogenic interventions on sediment dynamics.

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研究印度一条热带季风主导的河流的流量悬浮泥沙行为的复杂性

研究区域印度Brahmani河流域的多个测量站。本研究提供了对季风型河流泥沙输送复杂性的理解，并为有效的河流管理和环境保护提供了明智的决策支持。它还强调了地表景观的影响、水库的管理以及人为影响对沉积物运移动力学的作用。在Brahmani河的四个测量站：Tilga、Panposh、Gomlai和Jenapur测量了河流流量和沉积物浓度。前三个位于伦加利大坝上游，而Jenapur位于大坝下方的平原地区。分析表明，细粒沉积物（<0.075 mm）的相关性不同，从Tilga的线性到Panposh的对数和Gomlai的幂律。中沉积（0.075 ~ 0.2 mm）在Tilga和Panposh表现出线性和对数相关性，粗沉积（>0.2 mm）在Panposh和Gomlai表现出对数相关性。Tilga和Panposh沉积物总浓度呈现线性和对数关系，表明沉积物输运动力学的复杂性。该研究揭示了河流流量与总输沙量（MT/d）之间令人信服的关系，在Gomlai具有显著的power-lla相关性，强调了河流流量变化对输沙量的影响。它强调了地表地质的影响、水库的位置以及人为干预对沉积物动力学的作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Hydrology-Regional Studies Earth and Planetary Sciences-Earth and Planetary Sciences (miscellaneous)

CiteScore

6.70

自引率

8.50%

发文量

284

审稿时长

60 days

期刊介绍： Journal of Hydrology: Regional Studies publishes original research papers enhancing the science of hydrology and aiming at region-specific problems, past and future conditions, analysis, review and solutions. The journal particularly welcomes research papers that deliver new insights into region-specific hydrological processes and responses to changing conditions, as well as contributions that incorporate interdisciplinarity and translational science.