Evolutionary, multi-scale analysis of river bank line retreat using continuous wavelet transforms: Jamuna River, Bangladesh
In this study continuous wavelet transforms are used to explore spatio-temporal patterns of multi-scale bank line retreat along a 204 km reach of the Jamuna River, Bangladesh. A sequence of eight bank line retreat series, derived from remotely-sensed imagery for the period 1987-1999, is transformed...
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Elsevier
2013
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| Online Access: | https://eprints.nottingham.ac.uk/28050/ |
| _version_ | 1848793495127457792 |
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| author | Mount, Nick J. Tate, Nicholas J. Sarker, Maminul H. Thorne, Colin R. |
| author_facet | Mount, Nick J. Tate, Nicholas J. Sarker, Maminul H. Thorne, Colin R. |
| author_sort | Mount, Nick J. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | In this study continuous wavelet transforms are used to explore spatio-temporal patterns of multi-scale bank line retreat along a 204 km reach of the Jamuna River, Bangladesh. A sequence of eight bank line retreat series, derived from remotely-sensed imagery for the period 1987-1999, is transformed using the Morlet mother wavelet. Bank erosion is shown to operate at several characteristic spatial and temporal scales. Local erosion and bank line retreat are shown to occur in short, well defined reaches characterised by temporal persistence at the same location, and separated by relatively stable reaches. In contrast, evidence of downstream propagation of bank line retreat patterns is evident at larger spatial scales. The intensity of localised bank line retreat (i.e. at scales of 0 - 20 km) is strongly related to the magnitude of monsoonal peak discharge, but this relationship weakens as the spatial scale of erosion increases. The potential of continuous wavelet analysis to enhancing our understanding of morphological evolution in complex fluvial systems with multi-channel planforms is discussed. |
| first_indexed | 2025-11-14T19:01:12Z |
| format | Article |
| id | nottingham-28050 |
| institution | University of Nottingham Malaysia Campus |
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| last_indexed | 2025-11-14T19:01:12Z |
| publishDate | 2013 |
| publisher | Elsevier |
| recordtype | eprints |
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| spelling | nottingham-280502020-05-04T16:35:09Z https://eprints.nottingham.ac.uk/28050/ Evolutionary, multi-scale analysis of river bank line retreat using continuous wavelet transforms: Jamuna River, Bangladesh Mount, Nick J. Tate, Nicholas J. Sarker, Maminul H. Thorne, Colin R. In this study continuous wavelet transforms are used to explore spatio-temporal patterns of multi-scale bank line retreat along a 204 km reach of the Jamuna River, Bangladesh. A sequence of eight bank line retreat series, derived from remotely-sensed imagery for the period 1987-1999, is transformed using the Morlet mother wavelet. Bank erosion is shown to operate at several characteristic spatial and temporal scales. Local erosion and bank line retreat are shown to occur in short, well defined reaches characterised by temporal persistence at the same location, and separated by relatively stable reaches. In contrast, evidence of downstream propagation of bank line retreat patterns is evident at larger spatial scales. The intensity of localised bank line retreat (i.e. at scales of 0 - 20 km) is strongly related to the magnitude of monsoonal peak discharge, but this relationship weakens as the spatial scale of erosion increases. The potential of continuous wavelet analysis to enhancing our understanding of morphological evolution in complex fluvial systems with multi-channel planforms is discussed. Elsevier 2013-02-01 Article PeerReviewed Mount, Nick J., Tate, Nicholas J., Sarker, Maminul H. and Thorne, Colin R. (2013) Evolutionary, multi-scale analysis of river bank line retreat using continuous wavelet transforms: Jamuna River, Bangladesh. Geomorphology, 183 . pp. 82-95. ISSN 0169-555X Continuous Wavelet Transform Jamuna River Braided river Time-space Erosion processes Embayment pattern Sediment wave http://www.sciencedirect.com/science/article/pii/S0169555X12003492 doi:10.1016/j.geomorph.2012.07.017 doi:10.1016/j.geomorph.2012.07.017 |
| spellingShingle | Continuous Wavelet Transform Jamuna River Braided river Time-space Erosion processes Embayment pattern Sediment wave Mount, Nick J. Tate, Nicholas J. Sarker, Maminul H. Thorne, Colin R. Evolutionary, multi-scale analysis of river bank line retreat using continuous wavelet transforms: Jamuna River, Bangladesh |
| title | Evolutionary, multi-scale analysis of river bank line retreat using continuous wavelet transforms: Jamuna River, Bangladesh |
| title_full | Evolutionary, multi-scale analysis of river bank line retreat using continuous wavelet transforms: Jamuna River, Bangladesh |
| title_fullStr | Evolutionary, multi-scale analysis of river bank line retreat using continuous wavelet transforms: Jamuna River, Bangladesh |
| title_full_unstemmed | Evolutionary, multi-scale analysis of river bank line retreat using continuous wavelet transforms: Jamuna River, Bangladesh |
| title_short | Evolutionary, multi-scale analysis of river bank line retreat using continuous wavelet transforms: Jamuna River, Bangladesh |
| title_sort | evolutionary, multi-scale analysis of river bank line retreat using continuous wavelet transforms: jamuna river, bangladesh |
| topic | Continuous Wavelet Transform Jamuna River Braided river Time-space Erosion processes Embayment pattern Sediment wave |
| url | https://eprints.nottingham.ac.uk/28050/ https://eprints.nottingham.ac.uk/28050/ https://eprints.nottingham.ac.uk/28050/ |