Indrani Dhar,Goutam Sengupta,Sujoy Biswas,Mourani Sinha,Abhijit Mitra,



Bay of Bengal,Blue Economy,Corrosion,Jharkhali,Haldia,


The inshore region of the Bay of Bengal is one of the less-studied regions of the world ocean in terms of sustainability of Blue Economy while being one of the most exploited bodies of water to benefit a considerable chunk of the Indian population. For the first time, thirty-six years of in situ data at two locations in the northwestern Bay preferably in the lower Gangetic delta region has been analyzed to identify long-term trends in salinity. The salinity values obtained for Jharkhali and Haldia, situated in the lower Gangetic delta region exhibit extreme contrasting profiles. Jharkhali shows an increasing trend, whereas Haldia shows a pronounced decreasing trend of salinity with the passage of time. The results point towards the vulnerability of Jharkhali station towards corrosion of engineering structures, which might exert a negative impact on the sustainability of Blue Economy in this region.


I. FAO, “Global Blue Growth Initiative and Small Island Developing States (SIDS)”. http://www.fao. org/3/a-i3958e.pdf. 2014c.
II. Global Ocean Commission. “From Decline to Recovery: A Rescue, Package for the Global Ocean”. 2014.
III. Hoegh-Guldberg O., “Reviving the Ocean Economy: The Case for Action – 2015”, Gland, Switzerland and Geneva: World Wildlife Fund International. 2015.
IV. J. D. H. Strickland and T. R. Parsons, In: “A Practical Handbook of Seawater Analysis”, Ottawa: Fisheries Research Board of Canada, Bulletin. vol.167, pp: 293, 1968.
V. Karani P. and Failler P., “Comparative Coastal and Marine Tourism, Climate Change, and the Blue Economy in African Large Marine Ecosystems”, Environ. Dev. vol. 36, pp: 100572 2020,
VI. OCED, “The Ocean Economy in 2030. Paris: OECD”. 2016. htm
VII. United Nations, Independent Expert Advisory Group on a Data Revolution for Sustainable Development, “A World That Counts: Mobilising the Data Revolution for Sustainable Development”, Independent Advisory Group Secretariat. Available from 2014.
VIII. Voyer M, “Shades of Blue: What Do Competing Interpretations of the Blue Economy Mean for Oceans Governance?” J. Environ. Policy Plan. vol. 23, pp: 595–616, 2018.
IX. Williams P.D., et al., “The role of mean ocean salinity in climate”, Dynamics of Atmospheres and Oceans. vol. 49, pp: 108–123, 2010.
X. World Ocean Council. Frequently Asked Questions.

View Download