01-05 December 2025
INCOIS, Hyderabad, India.
| Abstract Submission No. | ABS-09-0362 |
| Title of Abstract | Morphology of the Canyon-Channel Systems in the Cauvery Basin using High Resolution Bathymetric Data |
| Authors | Abhimanyu Rajan*, Bijesh C M, Priyesh Kunnummal |
| Organisation | National Centre for Polar and Ocean Research |
| Address | National Centre for Polar and Ocean Research, Headland Sada Vasco Da Gama, GOA, India Pincode: 403804 E-mail: abhimanyu@ncpor.res.in |
| Country | India |
| Presentation | Poster |
| Abstract | Submarine canyons and channels are distinctive geomorphic features that act as sedimentary conduits for transporting vast amounts of terrigenous material into the deep ocean. Their development is influenced by geological, tectonic, oceanographic, and climatic processes, leaving behind a range of characteristic morphological signatures. This study examines the canyon channel system in the Cauvery Basin, along the southeastern continental margin of India. This half crescent-shaped basin evolved due to the rifting between India and East Antarctica. High resolution bathymetric data acquired along this region offer a unique opportunity to study the geomorphological and morphometric characteristics of the canyon-channels in detail. In this study, we analyzed the bathymetry data to infer the morphology of canyonâ¿¿channel complexes and to understand the possible controlling factors on their origin and evolution. Bathymetric data reveal the presence of five major canyon-channel systems with distinct morphological characteristics. The identified canyon-channel systems extend more than 100 km into the Bay of Bengal with sinuosity ranging from 1-1.35, and are associated with depositional and erosional features, indicating a dynamic interplay between turbidity currents and seafloor topography. The systems exhibit tributaries, some of which converge to form major channel-levee complexes. Morphological features also include abandoned channels with well-defined levee crests, terraces, meandering bends, and mass transport deposits. Further, the morphometric analysis of the identified canyon-channel systems has been carried out to understand the canyon-channel modifying features. The conformity of Precambrian lineaments and the location of the canyon channel system provide evidence for tectonic and lineament control on canyon-channel genesis. The analysis indicates the impact of migration of the river systems on the evolution of the canyon channel system, indicating tectonic and climatic controls. This work has implications for the assessment of geohazards and the deep marine ecosystem. |
| Are you part of IIOE-2 endorsed project | no |
| Keywords | Canyon, Channel, Morphology, Geohazards, Cauvery basin |
| For Awards | yes |
| Date Of Birth | 17-04-1996 |
| ECSN Registration Number | IIOE2-ECSN-0183 |