01-05 December 2025
INCOIS, Hyderabad, India.
| Abstract Submission No. | ABS-06-0276 |
| Title of Abstract | Comparative study on wave characteristics off east and west coast of India using wave rider buoys |
| Authors | RAYAPAREDDY BHARAT KUMAR*, Dr Aneesh A Lotliker, S Shivaprasad |
| Organisation | Indian National Centre for Ocean Information Services |
| Address | 401 Srinivasa Residency Hyderabad, Telangana, India Pincode: 500090 E-mail: bkr.reddy-p@incois.gov.in |
| Country | India |
| Presentation | Poster |
| Abstract | The wave climate along the Indian coastline exhibits strong regional contrasts due to the differing oceanographic and meteorological conditions of the Arabian Sea (west coast) and the Bay of Bengal (east coast). In this study, in situ observations from the network of directional wave rider buoys operated by the Indian National Centre for Ocean Information Services (INCOIS) and the National Institute of Ocean Technology (NIOT) are analyzed to assess significant wave height (Hs), mean wave period (Tm), and mean wave direction (θ) over multiple years. Results indicate that the west coast is dominated by monsoon-driven swell, with Hs typically ranging from 0.5⿿1.5 m during the fair-weather season and increasing to 3.0⿿4.5 m during the Southwest monsoon (June⿿September). Mean wave periods exceed 8⿿12 s in monsoon months, reflecting the influence of long-period swells propagating from the Southern Indian Ocean. In contrast, the east coast exhibits lower background wave energy (Hs ~0.5⿿1.0 m in fair-weather months) but is punctuated by extreme events during tropical cyclones, where Hs can exceed 6⿿8 m with associated shorter-period wind-sea components (6⿿9 s). Wave direction along the west coast is consistently southwesterly during the monsoon, while the east coast displays a broader directional spread influenced by both seasonal winds and cyclone tracks. The comparative analysis highlights the sustained energetic monsoon regime of the Arabian Sea versus the episodic but extreme cyclone-driven wave climate of the Bay of Bengal. These findings, based on long-term buoy records from the INCOIS/NIOT network, provide critical inputs for coastal vulnerability assessment, shoreline management, and the design of marine and offshore infrastructure along the Indian coastline. |
| Are you part of IIOE-2 endorsed project | no |
| Keywords | Wave climate, Indian coastline, Arabian Sea, Bay of Bengal, Directional wave rider buoys, Significant wave height (Hs), Mean wave period (Tm),Coastal vulnerability |
| For Awards | no |