Decadal-Scale Shore Morphological Changes of Hatiya Island (Meghna Estuary, Bangladesh).
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| Title: | Decadal-Scale Shore Morphological Changes of Hatiya Island (Meghna Estuary, Bangladesh). |
|---|---|
| Authors: | Zishan, Nazmul Islam1 (AUTHOR) nazmul.zishan@gmail.com, Anwar, Md. Shibly1 (AUTHOR), Rahman, Kalimur2 (AUTHOR) |
| Source: | Journal of Coastal Research. 2026, Vol. 42 Issue 1, p106-121. 16p. |
| Subjects: | Erosion, Shorelines, Landsat satellites, Coastal zone management, Estuary management, Mangrove plants, Islands, Geomorphology |
| Geographic Terms: | Bangladesh, Bay of Bengal |
| Abstract: | Zishan, N.I.; Anwar, M.S., and Rahman, K., 2026. Decadal-scale shore morphological changes of Hatiya Island (Meghna Estuary, Bangladesh). Journal of Coastal Research, 42(1), 106–121. Charlotte (North Carolina), ISSN 0749-0208. Hatiya Island, located at the mouth of the Meghna estuary in Bangladesh's central coast, has been facing continuous erosion–accretion through a strong river current and tidal actions from the Bay of Bengal. The erosion–accretion process caused morphological changes in and around Hatiya Island during the past few decades. This study calculated the shoreline change rates around Hatiya Island from 1989 to 2021, analyzing the tide and water level, and thus explaining the interaction between these factors on spatial and temporal scale. Broadly, a total of 33 Landsat satellite images were selected to detect automatic shoreline positions of the island. Overall, a dominance of erosion (86.0 km2) over accretion (32.6 km2) around the boundary of Hatiya Island was observed during 1989 to 2021. To describe the decadal-scale behavior of erosion–accretion and the associated parameters, the entire study period was further segmented into three distinct subperiods: 1989–2000, 2000–11, and 2011–21. The estimated annual shoreline changes are 25.3 m erosion, 24.7 m erosion, and 4.4 m accretion for the periods 1989 to 2000, 2000 to 2011, and 2011 to 2021, respectively, demonstrating a gradual shifting of erosion–accretion trend. The most erosion around the northern part of Hatiya Island (108.9 m/y) occurred from 2000 to 2011, whereas the SE portion attained land (21.8 m/y) during the same period. The onshore mangrove fringes in the southern portion along with adjacent islands (i.e. Nijhum Dwip and Domar Char) have been protecting Hatiya Island from direct tidal impact as well as contributing toward the land-gaining process. The results of this study provide a valuable reference for decision-makers aiming to understand decadal-scale morphological trends and implementing coastal policies and adaptation strategies to safeguard the densely populated Hatiya Island from ongoing erosion and accretion. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Coastal Research is the property of KnowledgeWorks Global, Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 190955402 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Decadal-Scale Shore Morphological Changes of Hatiya Island (Meghna Estuary, Bangladesh). – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Zishan%2C+Nazmul+Islam%22">Zishan, Nazmul Islam</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> nazmul.zishan@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Anwar%2C+Md%2E+Shibly%22">Anwar, Md. Shibly</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rahman%2C+Kalimur%22">Rahman, Kalimur</searchLink><relatesTo>2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Coastal+Research%22">Journal of Coastal Research</searchLink>. 2026, Vol. 42 Issue 1, p106-121. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Erosion%22">Erosion</searchLink><br /><searchLink fieldCode="DE" term="%22Shorelines%22">Shorelines</searchLink><br /><searchLink fieldCode="DE" term="%22Landsat+satellites%22">Landsat satellites</searchLink><br /><searchLink fieldCode="DE" term="%22Coastal+zone+management%22">Coastal zone management</searchLink><br /><searchLink fieldCode="DE" term="%22Estuary+management%22">Estuary management</searchLink><br /><searchLink fieldCode="DE" term="%22Mangrove+plants%22">Mangrove plants</searchLink><br /><searchLink fieldCode="DE" term="%22Islands%22">Islands</searchLink><br /><searchLink fieldCode="DE" term="%22Geomorphology%22">Geomorphology</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Bangladesh%22">Bangladesh</searchLink><br /><searchLink fieldCode="DE" term="%22Bay+of+Bengal%22">Bay of Bengal</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Zishan, N.I.; Anwar, M.S., and Rahman, K., 2026. Decadal-scale shore morphological changes of Hatiya Island (Meghna Estuary, Bangladesh). Journal of Coastal Research, 42(1), 106–121. Charlotte (North Carolina), ISSN 0749-0208. Hatiya Island, located at the mouth of the Meghna estuary in Bangladesh's central coast, has been facing continuous erosion–accretion through a strong river current and tidal actions from the Bay of Bengal. The erosion–accretion process caused morphological changes in and around Hatiya Island during the past few decades. This study calculated the shoreline change rates around Hatiya Island from 1989 to 2021, analyzing the tide and water level, and thus explaining the interaction between these factors on spatial and temporal scale. Broadly, a total of 33 Landsat satellite images were selected to detect automatic shoreline positions of the island. Overall, a dominance of erosion (86.0 km2) over accretion (32.6 km2) around the boundary of Hatiya Island was observed during 1989 to 2021. To describe the decadal-scale behavior of erosion–accretion and the associated parameters, the entire study period was further segmented into three distinct subperiods: 1989–2000, 2000–11, and 2011–21. The estimated annual shoreline changes are 25.3 m erosion, 24.7 m erosion, and 4.4 m accretion for the periods 1989 to 2000, 2000 to 2011, and 2011 to 2021, respectively, demonstrating a gradual shifting of erosion–accretion trend. The most erosion around the northern part of Hatiya Island (108.9 m/y) occurred from 2000 to 2011, whereas the SE portion attained land (21.8 m/y) during the same period. The onshore mangrove fringes in the southern portion along with adjacent islands (i.e. Nijhum Dwip and Domar Char) have been protecting Hatiya Island from direct tidal impact as well as contributing toward the land-gaining process. The results of this study provide a valuable reference for decision-makers aiming to understand decadal-scale morphological trends and implementing coastal policies and adaptation strategies to safeguard the densely populated Hatiya Island from ongoing erosion and accretion. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Coastal Research is the property of KnowledgeWorks Global, Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.2112/JCOASTRES-D-24-00089.1 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 106 Subjects: – SubjectFull: Erosion Type: general – SubjectFull: Shorelines Type: general – SubjectFull: Landsat satellites Type: general – SubjectFull: Coastal zone management Type: general – SubjectFull: Estuary management Type: general – SubjectFull: Mangrove plants Type: general – SubjectFull: Islands Type: general – SubjectFull: Geomorphology Type: general – SubjectFull: Bangladesh Type: general – SubjectFull: Bay of Bengal Type: general Titles: – TitleFull: Decadal-Scale Shore Morphological Changes of Hatiya Island (Meghna Estuary, Bangladesh). Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Zishan, Nazmul Islam – PersonEntity: Name: NameFull: Anwar, Md. Shibly – PersonEntity: Name: NameFull: Rahman, Kalimur IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: 2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 07490208 Numbering: – Type: volume Value: 42 – Type: issue Value: 1 Titles: – TitleFull: Journal of Coastal Research Type: main |
| ResultId | 1 |
