OSICON-21OSICON-21 SeventhSeventh NaNationaltional ConferConferenceence ofof thethe OceanOcean SocietySociety ofof IndiaIndia Books of Abstracts August 12-14, 2021 Focal Theme: Ocean for Sustainable Development Dr. M. Ravichnadran President, Ocean Society of India (OSI) Director, National Centre for Polar and Ocean Research (NCPOR) Ministry of Earth Sciences (MoES), Goa Welcome Message ational Centre for Polar and Ocean Research (NCPOR) of Ministry of Earth Sciences, Government of India proud to be the host for the 7ʰ biennial edition of the NNational Conference of the Ocean Society of India (OSICON-21) in collaboration with Ocean Society of India (OSI) from 12-14 August 2021. The COVID-19 pandemic has an immense global impact and has claimed many casualties. Our deepest condolences go out to the people who have lost a loved one and to the people who have suffered during this pandemic. This year, while we regret that the COVID-19 pandemic prevented us from holding the conference in Goa, we are excited about the opportunities of holding an innovative virtual conference. The theme of the OSICON-21 three-day conference is “Ocean for Sustainable Development”. We expect that the online conference will enable you to share your research with other Indian Oceanographic communities and discuss the current issues related to research in Oceanography. There are three parallel sessions each day. The meeting includes a range of presentations, invited talks, oral presentations, and poster presentations, covering seven themes, viz (i) Marine ecosystems and Biogeochemistry of the Ocean, (ii) Coastal and open Ocean processes, (iii) Climate change, (iv) Polar Science and cryosphere, (v) Ocean Engineering and Technology, (vi) Marine Geology and Geophysics and (vii) Mathematics in Ocean sciences. I would like to thank and acknowledge the Chief Guest, invited speakers, Chairman and coordinators of the session, LOC, GC-OSI, advisory commiee, sponsors, delegates, and the support team who have worked hard to make this conference a truly successful one. I request all the delegates and participants to take part in all the activities that we have come up with for three days. I sincerely hope that this OSICON-21 conference will deliberate and discuss all the different facets of Oceanography and come up with recommendations that will lead to the development of sustainable oceans. I welcome you to this conference and look forward to your active and enthusiastic participation: we have so much to learn from each other. With best regards, (M. Ravichandran) President, OSI 2 Preface Dr. Avinash Kumar Dr. R.K. Mishra Dr. N. Anilkumar Co-Convener Co-Convener Convener he Ocean Society of India (OSI), established in 2006, acts as a medium for partaking in the gen and know-how of the entities, industrial organizations, research institutions Temployed in the various regimes of the ocean. It is a professional society encompassing Academicians, Researchers, Technologists and Engineers from Universities, Scientific Institutions and Industries occupied in the Ocean-Atmospheric related investigations. The OSI provides gaits towards information amelioration for the research and development of our country. OSI is organizing the OSICON biennial National Conference since 2009. Various reputed organizations and universities across the country have hosted the conference very successfully. Distinguished scientists, professors, research scholars, and students from several scientific institutes and universities have actively participated in the previous conferences. To date, six conferences are being conducted. The OSICON-21 is going to be held at National Centre for Polar and Ocean Research, Goa, during 12-14 August 2021. The conference is planned to be conducted on a virtual (online) platform. It is a prestigious tribute for us to release the Book of Abstracts of Seventh Biennial Conference of Ocean Society of India (OSI), organised by the National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Government of India. We have received a prodigious riposte and splendid quality abstracts for all the scientific themes included in the present conference. Ocean, as an ecological unit, mollifies the global weather and climate. Nonetheless, due to the anthropogenic interferences, most of the ocean environments are geing too vulnerable to alleviate the climatic conditions. Accordingly, United Nations (UN) has asserted 'Decade of Ocean Science for Sustainable Development (2021-2030)' to enlighten mankind about the importance of the role of oceans in climatic variabilities. India’s Deep Ocean Mission launching will throw light on the unknown resources and their extraction from the deep ocean regimes. OSICON-21 provided an exceptional platform for the researchers in India to discuss their findings and future outlooks in the major themes Marine Ecosystem and Biogeochemistry of the Ocean, Climate and Climate Change, Coastal and open Ocean processes, Marine Geology and Geophysics, Ocean Engineering and Technology, Polar Science and Cryosphere, Mathematics in Ocean Science. The necessity for partaking in dazzling and inspiring concepts in this vital area of research is encountered with identical fervour and sustenance from the contributors as perceived from their retort to this platform. 3 PREFACE 4 The technical commiee carried out the peer review of all the abstracts with Dr. Prasad Bhaskaran, IIT, Kharagpur as the chairman. We express our sincere gratitude to all reviewers who helped us include the high-quality research papers in the conference proceedings. This Abstracts volume has 113 oral presentations and 103 poster presentations spread over 7 themes. Considering the present COVID scenario, only so copies of the conference proceedings were made available. This proceedings volume with abstracts is made to give wider publicity for the admirable scientific investigations going on in our country in the focal themes of this conference. We are exceptionally thankful to The President and GC Members of OSI for providing us with an opportunity to deliver our best efforts for the accomplishment of this conference. We are assertive that the scientific and technical contributions made by all the authors, invited speakers, chairmen and coordinators, advertisers, exhibitors, sponsors, and participants in this conference will augment to fill the knowledge gap in the various remote regimes of the oceans. We extend our sincere gratefulness to all the contributors. All members of the Organizing Commiee, especially Dr. Ravidas K Naik, Dr. Rohit Srivastava, Mr. Lalit Ahirwar, Dr. P. Sabu, Dr. Jenson V George, and all Technical Commiees members are extensively acknowledged for their immense support to conduct this conference successfully. We trust that OSICON-21 is the best juncture for making associations among the researchers. We delivered our responsibilities sincerely for the success of this conference and sorry for the apprehensions faced by you, if any. We wish you all a fruitful meeting. Avinash Kumar R.K. Mishra N. Anilkumar Co-Convener Co-Convener Convener Committees Advisory Committee Dr. Madhavan Nair Rajeevan, Former-Secretary, Ministry of Earth Sciences (MoES), Government of India Shailesh Nayak, Former-Secretary, MoES and Director, National Institute of Advanced Studies, Bengaluru. Dr. M. Mohapatra, DGM, IMD Dr. Prakash Chauhan, Director, IIRS Dr. Raj Kumar, Director, NRSC Dr. Virendra M. Tiwari, Director, NGRI Prof. Sunil Kumar Singh, Director, NIO Dr. A. Gopalakrishnan, Director, CMFRI Prof. Ravishankar Nanjundiah, Director, IITM Dr. M.V. Ramana Murthy, Director, NCCR Dr. G.A. Ramadass, Director, NIOT Dr. Srinivasa Kumar, Director, INCOIS Prof. Jyotiranjan S. Ray, Director, NCESS Dr. G.V.M Gupta, Director, CMLRE Dr. O.R. Nandagopan, Director, NSTL Mr. S. Vijayn Pillai, Director, NPOL Dr. M. Baba, Former Director, CESS Dr. N.P. Kurian, Former Director, NCESS M. Ravichandran, Director, NCPOR, President, OSI Dr. Basanta Kumar Jena, Gen. Secretary, OSI 5 COMMITTEES 6 Organizing Committee Dr. M. Ravichandran, NCPOR (Chairman) Dr. N. Anilkumar, Convener, NCPOR Dr. R.K. Mishra, Co-Convener, NCPOR Dr. Avinash Kumar, Co-Convener, NCPOR Prof. H.B. Menon, Member, Goa University Dr. S.C. Tripathy, Member, NCPOR Dr. Mani Murali R, Member, CSIR-NIO Mr. Lalit Kumar Ahirwar, Member, NCPOR Dr. P. Sabu, Member, NCPOR Dr. P.V. Bhaskar, Member, NCPOR Dr. Rohit Srivastava, Member, NCPOR Dr. Nuncio Murukesh, Member, NCPOR Dr. Jenson George, Member, NCPOR Dr. Ravidas K. Naik, Member, NCPOR COMMITTEES 7 OSI- Governing Council Dr. M. Ravichandran, President Dr. N.P. Kurian, Vice President Dr. Tata Sudhakar, Vice President Dr. Basanta Kumar Jena, Gen. Secretary Prof. Prasad K. Bhaskaran, Joint Secretary Dr. Mani Murali, Joint Secretary Dr. Smitha Balraj, Treasurer Dr. M. Baba, Member Dr. Vinu Valsala, Member Dr. Anand P., Member Mr. Eluri Pattabhi Ramarao, Member Dr. Prasad K.V.S., Member Dr. Kankara R.S., Member Dr. Jossia Joseph K., Member Dr. Vimlesh Pant, Member Dr. Marathadu Sudhakar, Ex-Officio Member Dr. C. Revichandran, Ex-Officio Member Prof. Jayachandran K.V., Chairman, Kochi Chapter Dr. Supriyo Chakraborty, Chairman, Pune Chapter Prof. Balasubramaniam, Chairman, Chennai Chapter th Time 12 AUGUST 2021: DAY 1 INAUGURATION 09:30 - 11:30 PLENARY TALK BY HON. FELLOW 11:30 - 11:45 TEA BREAK Bharati Hall Maitri Hall Himadri Hall PARALLEL SESSION 1 PARALLEL SESSION 2 PARALLEL SESSION 3 (Technical session-1) (Technical session-2) (Technical session-3) Marine