Abstract
AbstractDynamic changes in river basin cause river bank shifting, change in river channel patterns, river width and course direction. It may cause due to natural phenomena like flood or by construction of man-made structures like dams, barrages. Study of river migration patterns is of much importance and needs historical river course information. Remote sensing satellite data provides synoptic and temporal coverage useful for change analysis. Geospatial techniques integrated with remote sensing data, have potential to carry out river migration studies. Manual analysis of satellite data is a time-consuming process and subjected to human induced errors. This study focuses on different methods, including online cloud-based geospatial analytic platforms for river bank changes using temporal satellite data. A case study of identification of long-term river migration patterns, on Ganga River between Bhimgoda barrage, Haridwar, Uttarakhand, India to Luv-Kush Barrage, Kanpur, Uttar Pradesh, India is attempted. Automated procedures analyzing satellite data from 1975 to 2020, are successfully utilized to calculate morphometric parameter for identifying river migration. Meandering of Ganga River is observed after construction of Narora barrage and Bijnor barrage. Increasing trend in meandering and braiding indices between 0.21 and 0.43 during the study period are observed during the period 1975–2020.KeywordsRemote sensingRiver migrationRiver meanderingSinuosity index and braiding index
Published Version
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