A study of ocean parameters in Bay of Bengal (BoB) using indigenised drifting buoys

  • R SrinivasanEmail author
  • V Rajendran
  • Shijo Zacharia
  • Tata Sudhakar

Drifting buoys (DBs) are widely deployed to observe near-surface ocean currents and sea surface temperature. The National Institute of Ocean Technology (NIOT), Chennai, India, had indigenised the DB with the Indian satellite (INSAT) in 2012. This paper describes the results of various studies conducted by NIOT using the indigenised DBs and also describes unique features attempted in indigenised DBs to measure the near-surface ocean current with 24 position acquisitions per day to capture small-scale surface eddies and the use of real-time geostationary satellite communication every hour. Additionally, the surface currents observed with indigenous DB are compared with DBs available in the market, Marlin-Yug (coefficient of determination R2 > 0.88) and forecast using the ocean surface current analyses real-time (coefficient of determination R2 > 0.90). Our results show that the DBs in the Bay of Bengal are carried with the East India Coastal Current in the March–May periods and the in-situ observations by the DB provide accurate surface current observations than satellite-based data. Furthermore, the new observations near the world’s largest tidal mangrove and delta system, the Sundarbans and Bengal Delta, will help in further enhancing our understanding of the spatiotemporal variability in the region in terms of coastal currents and its influence on marine environments.


Drifting buoy surface current EICC INSAT GPS eddies 



The authors gratefully thank all the staff members of National Institute of Ocean Technology and heartfelt thanks to director, NIOT for his vital and continuous encouragement and support extended during this developmental work. The development and deployment are fully funded by MoES (Ministry of Earth Sciences, Govt. of India). The authors are also thankful to vessel management cell, NIOT for allocated vessel time for DB deployment operations.


  1. Atmanand M A 2013 Development in Underwater Technologies – Indian Scenario; Proceedings of International Symposium on Underwater Technologies UT ‘13 IEEE,
  2. Austin J and Atkinson S 2004 The design and testing of small low cost GPS tracked surface drifters; J. Estuaries Coasts 27 1026–1029, Scholar
  3. Dohan K and Maximenko N 2010 Monitoring ocean currents with satellite sensors; Oceanography 23(4) 94–103, Scholar
  4. Koffler R 1975 Use of NOAA environmental satellites to remotely sense ocean phenomena; In: International OCEAN 1975 Conference, San Diego, USA, pp. 835–839,
  5. Lanza M 1984 A low-cost expendable Loran-based drifting buoy; In: Oceans Conference, Washington DC, USA, pp. 741–744,
  6. Rogers K and Goodbred S 2014 The Sundarbans and Bengal Delta, The world’s largest Tidal Mangrove and Delta system; Springer, New York, pp. 1–8,
  7. Scripps Institution of Oceanography Reference Series 1993 SIO Series 93/28, World Ocean Circulation Experiment-WOCE’; Report 108/93.
  8. Shenoi S S C 2010 Intra-seasonal variability of the coastal currents around India: A review of the evidences from new observations; J. Indian Geo. Sci. 39(4) 489–496,
  9. Shetye S R, Gouveia A D, Shenoi S S C, Sundar D, Michael G S and Nampoothiri G 1993 The western boundary current of the seasonal subtropical gyre in the Bay of Bengal; J. Geophys. Res. 98 (C1) 945–954,
  10. Shijo Z, Seshasayanan R, Srinivasan R, Thamarai T, Sudhakar T, Rao R R and Atmanand M A 2014 Design development and validation of smart sensor drifting node with INSAT telemetry for oceanographic applications; Curr. Sci. 106(6) 831–840,
  11. Smith P, Frye D and Cresswell G 1984 New low-cost ARGOS drifting buoy; In: Oceans Conference, Washington DC, USA, pp. 745–747,
  12. Srinivasan R, Zacharia S, Sudhakar T, Thamarai T, Gowthaman V and Atmanand M A 2013 A smart sensor drifting buoy node with INSAT communication for meteorological and oceanographic applications; Indian Patent Office J., Patent application no 400/CHE/2013.Google Scholar
  13. Srinivasan R, Zacharia S, Kankara R S and Sudhakar T 2016 Design and performance of GPRS communication based drifting buoy for measurement of upper layer current in coastal area; J. Ocean Technol. V11N2 75–82,
  14. Sybrandy A L, Niiler P P, Martin C, Scuba W, Charpentier E and Meldrum D T 2009 Global drifter programme Drifter design reference; Data Buoy Cooperation Panel Report No. 4 REV.2.2,
  15. Tata S, Dash S K, Rao R R, Srinivasan R, Atmanand M A, Subramaniam B R and Nayak S 2013 Detection of sea-surface temperature anomaly in the equatorial region of Bay of Bengal using indigenous Lagrangian drifter; Curr. Sci. 104(2) 177–178,
  16. Thamos O M 2010 Drifters, drogues, and circulation’, hands-on oceanography; Mag. Oceanogr. 23(4) 165–171.
  17., for G24 product specification on GPRS transceivers.

Copyright information

© Indian Academy of Sciences 2019

Authors and Affiliations

  1. 1.National Institute of Ocean Technology, (Ministry of Earth Sciences, Govt. of India)ChennaiIndia
  2. 2.School of Engineering, Department of Electronics & Communication, Vels Institute of Science, Technology & Advanced Studies (VISTAS)Vels UniversityPallavaram, ChennaiIndia

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