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| DOI | 10.1080/02723646.2024.2335740 |
| Temporal change in channel form and hydraulic behaviour of a tropical river due to natural forcing and anthropogenic interventions | |
| 发表日期 | 2024 |
| ISSN | 0272-3646 |
| EISSN | 1930-0557 |
| 英文摘要 | Assessing the degradation of river channels is crucial in the Anthropocene era, particularly in the deltaic areas worldwide. The present study aims to investigate the degradation of the Mathabhanga-Churni River giving emphasis on the temporal change of channel morphology and hydraulic behaviour and comparing the current situation with the historical past based on planform morphology and meander geometry of 118 meander loops, and width, depth, cross-sectional area, and hydraulic behaviour (velocity, discharge, stream power) at 47 cross-sections. The absence of lateral dynamicity, the static character of channel sinuosity during the last century (1913-2018), and the constant meander morphology reflects the static meander geometry and degradation of the river. The reduction of average channel width, depth, and cross-sectional area supports the falling trend of channel forms. Findings on hydraulic behaviour indicate declining discharge (similar to 50% reduction during 1915-2018) that induces the present-day downscaled velocity and lowered stream power. Neotectonics (eastward tilting of the Bengal delta) and anthropogenic stressors such as stream crossings, agriculture on river beds, brickfields, and urbanisation have a severe impact on the hydromorphology of the channel, turning the active river into a stagnant and polluted channel. |
| 英文关键词 | Hydro-morphological change; Mathabhanga-Churni river system; planform geometry; river decay |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Physical Geography ; Geology ; Meteorology & Atmospheric Sciences |
| WOS类目 | Environmental Sciences ; Geography, Physical ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001206181000001 |
| 来源期刊 | PHYSICAL GEOGRAPHY
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/295203 |
| 作者单位 | Aliah University; Jadavpur University; University of Silesia in Katowice; Universidad Costa Rica |
| 推荐引用方式 GB/T 7714 | . Temporal change in channel form and hydraulic behaviour of a tropical river due to natural forcing and anthropogenic interventions[J],2024. |
| APA | (2024).Temporal change in channel form and hydraulic behaviour of a tropical river due to natural forcing and anthropogenic interventions.PHYSICAL GEOGRAPHY. |
| MLA | "Temporal change in channel form and hydraulic behaviour of a tropical river due to natural forcing and anthropogenic interventions".PHYSICAL GEOGRAPHY (2024). |
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