01-05 December 2025
INCOIS, Hyderabad, India.
| Abstract Submission No. | ABS-05-0128 |
| Title of Abstract | On the Role of Sri Lankan Land Mass in Safeguarding the South-Eastern Coast of India from Southern Ocean Swell Attacks |
| Authors | Sandhya K G*, R Harikumar, P. A. Francis, Balaji Baduru, T. M. Balakrishnan Nair |
| Organisation | Indian National Centre for Ocean Information Services |
| Address | INCOIS Hyderabad, Telangana, India Pincode: 500090 E-mail: sandhyakg@incois.gov.in |
| Country | India |
| Presentation | Oral |
| Abstract | Observations, modelling, and reports show that the west coast of India bordering the Arabian Sea is prone to long-period swells generated in the Southern Indian Ocean. Although these swells also propagate into the Bay of Bengal, they are not predominant in the southeast coastal parts of India. Analyses of data from wave rider buoy observations which are deployed off the coast of Kollam (located in the southwest coast of India) and Pondicherry (located in the southeast coast of India) for the year 2019 suggest that 96% of the events of long-period swells which are seen in the Kollam buoy data are not reaching Pondicherry. Using the WAVEWATCH III 6.07 model, focused experiments are carried out to show that the Sri Lankan Land Mass (SLLM), situated in the south-east part of the Indian peninsula effectively blocks the long-period swell waves from the Southern Ocean to reach the south-east coast of India. Our analysis shows that in the absence of SLLM, the destructive Southern Ocean swells can reach Indian southeast coast, including the areas north of Sri Lanka until mid-Andhra Pradesh. |
| Are you part of IIOE-2 endorsed project | no |
| Keywords | Southern Ocean swells, Sri Lanka, Indian east coast, long-period swells, WAVEWATCH III, wave rider buoys |
| For Awards | no |