Abstract
Sea-level rise along the Bangladesh coast was estimated using tide gauge data. It showed considerable variation in sea-level change in different parts of the coastal zone. The tide gauge station at Hiron Point in the Sundarbans showed a SLR of 3.38 mm/year. SLR at Reyenda and Amtali was observed as 3.64 and 3.16 mm/year, respectively. Sea-level rise along the central coast was observed as 5.73 mm/year at Char Changa station in Hatiya. The station in Companiganj, representing the Noakhali Feni coastal zone, showed a SLR of 2.5 mm/year. Sea-level change along the eastern part of the coast showed very low rise or fall. Sadarghat station in the Chittagong coastal zone showed a sea-level fall of 11.75 mm/year. Sea-level rise calculated from the PSMSL dataset was observed as 1.36 mm/year at the Cox’s Bazar station. However, similar calculations from BIWTA in Moheshkhali and Teknaf showed a sea-level fall of 5.59 and 8.33 mm/year, respectively. Additionally, Physical vulnerability of the coast towards sea-level change was assessed revealing that the coastal areas along Patuakhali and Bhola Districts and Hatiya Island are very high vulnerable and the coastal areas along the Sundarbans and Barguna coastal zones are high vulnerable. The Noakhali Feni coastal zone is moderately vulnerable in terms of sea-level change. Vulnerability along the eastern part of the coast is very low.
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Acknowledgements
I acknowledge guidance by and inputs from Professor Colin Woodroffe. However, mistakes remain with me. Additional advices received from A/Prof. Brian Jones are also acknowledged. Dr. Aminul Islam encouraged submitting the paper to this book. Engineer Ahmed Sayeed (BIWTA) helped in data collection stage. This research was done as part of my PhD research at the University of Wollongong (UoW), Australia; with financial supports from Australian Leadership Award (ALA) Fellowship. Mapping was done using resources at the Spatial Analysis Lab (SAL), UoW, Australia.
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Sarwar, M.G.M. (2013). Sea-Level Rise Along the Coast of Bangladesh. In: Shaw, R., Mallick, F., Islam, A. (eds) Disaster Risk Reduction Approaches in Bangladesh. Disaster Risk Reduction. Springer, Tokyo. https://doi.org/10.1007/978-4-431-54252-0_10
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