Significance of analysis of buoy data in tracking the tidal behaviour for future deltaic management: From Bay to Sundarbans

Abstract

Tidal waves pay a complex role in shaping of the estuarine islands of Sundarbans in India and Bangladesh. Due to climate change and changing behaviour of the oceanic surface temperature and tidal bore range, the estuarine deltaic parts along the north of Bay of Bengal has been experiencing typical behaviour and magnitude of tidal erosion, transportation and deposition along the rivers like Hooghly, Muriganga, Saptamukhi, Thakuran, Matla, Gosaba, Hariabhanga and Ichhamati rivers with numerous short and intricated drainage network of criss-cross tidal creeks. The objective of this research is to find out the changing trend of air pressure impacting upon the decadal variation in bore tide range over northern apex of Bay of Bengal (BoB). The data has been obtained from IMD and MoES-NOAA OMNI-RAMA Joint data collected from buoys which is managed jointly by India's MoES/NIOT and NOAA. Statistical computation has been carried out by the author to validate the real-time oceanographic and atmospheric data to get the result. The research highlights on the significant relationship between the changing tidal bore range with changing air pressure since last two decades over BoB.