Recent morphological shifting of Padma River: geoenvironmental and socioeconomic implications

Nishat Rayhana Eshita, Mohammad Amir Hossain Bhuiyan () and A. H. M. Saadat
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Nishat Rayhana Eshita: Jahangirnagar University
Mohammad Amir Hossain Bhuiyan: Jahangirnagar University
A. H. M. Saadat: Jahangirnagar University

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2023, vol. 117, issue 1, No 20, 447-472

Abstract: Abstract This study was carried out to evaluate the recent morphological changes of Padma River with consequent socioeconomic impacts on the downstream riverbank area. Morphological changes of the river reach were analyzed using remote sensing (RS) data (from 2010 to 2019) and GIS technique. Social survey was performed in Zajira and Naria upazilas of Shariatpur district among 150 respondents to determine the social and economic losses. The GIS analysis showed that the average rate of erosion of major channel was 42 m/yr and the average accretion rate was 38 m/yr at the secondary channel. The northeastern channel was abandoned and shifted toward south at the rate of 262 m/yr. Shariatpur site was affected by noticeable erosion at the rate of 52 m/yr. The changing pattern of chars showed that sedimentation rate was higher at the northern side comparing the south. Statistically significant differences were found from independent sample T test for the mean shifting in main channel (t (3) = − 3.87, p

Keywords: River erosion; GIS; Remote sensing; Loss and damage; Bangladesh (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1007/s11069-023-05867-5

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