http://nopr.niscpr.res.in/handle/123456789/66150 2026-10-11T10:13:05Z 2026-10-11T10:13:05Z Lal, D M Harisha Nagaswetha, N Samanta, A Baliarsingh, S K Sathish, C Premkumar, R Jha, S Raulo, S Joseph, S Nair, T M B Kumar, M N Shenoy, D Warrier, A K http://nopr.niscpr.res.in/handle/123456789/66177 2025-07-23T10:23:59Z 2024-05-01T00:00:00Z

Title: Navigating the future: Advancing fisheries predictions with a front-to-fish approach Authors: Lal, D M; Harisha; Nagaswetha, N; Samanta, A; Baliarsingh, S K; Sathish, C; Premkumar, R; Jha, S; Raulo, S; Joseph, S; Nair, T M B; Kumar, M N; Shenoy, D; Warrier, A K Abstract: Oceans, vast reservoirs of abundant fish and marine life, exhibit varying exploitation and utilisation potential across space and time. A comprehensive understanding of the complex interaction between the environment, biology, and fish movements is crucial for accurately predicting fishing grounds, a key prerequisite for sustainable fisheries. The application of remote sensing technology has significantly enhanced the predictive capabilities on fisheries. It can portray environmental variables linked to productivity across the ocean, effectively identifying potential fishing grounds. Fishing grounds around the world are often found along current boundaries, upwelling zones, eddies, continental shelves, and reef banks. Oceanic fronts typically mark these boundaries or areas of upwelling and eddies, where favourable conditions for food webs are established due to the high nutrient levels, increased primary productivity, and abundance of prey organisms. The Indian National Centre for Ocean Information Services (INCOIS) offers fisheries advisories such as Potential Fishing Zones (PFZs), aiding fishers in locating areas with fish abundance, thereby saving fuel and time. INCOIS is progressing towards upgrading its services through habitat suitability studies and ecosystem modelling. The approach involves tracking oceanic front persistence and studying productivity scaling over time, utilizing environmental data from remote sensing, field observations, and food web studies. Anticipated outcomes include a deeper understanding of ocean biochemical phenomena in fronts, leading to improved predictions of fishing grounds, species, and fish catch. These advancements aim to contribute to sustainable fisheries management and promote more economical and fuel-efficient fishing. Page(s): 261-275

2024-05-01T00:00:00Z Baliarsingh, S K Samanta, A Lal, D M Mohanty, P C Raulo, S Giri, S Dash, B Jha, S Sathish, C Premkumar, R Harisha Joseph, S Balakrishnan Nair, T M Srinivasa Kumar, T http://nopr.niscpr.res.in/handle/123456789/66175 2025-07-24T10:07:13Z 2024-05-01T00:00:00Z

Title: Advancing marine ecological services for the Indian Seas: INCOIS’s contribution Authors: Baliarsingh, S K; Samanta, A; Lal, D M; Mohanty, P C; Raulo, S; Giri, S; Dash, B; Jha, S; Sathish, C; Premkumar, R; Harisha; Joseph, S; Balakrishnan Nair, T M; Srinivasa Kumar, T Abstract: The seas around India hold immense ecological and economic importance. However, this region experiences adverse effects from climate change, pollution, and overexploitation of marine resources. To tackle these challenges and promote sustainable ocean management and blue economy, the Indian National Centre for Ocean Information Services (INCOIS) offers a suite of marine ecological services on Marine Fisheries Advisory Services (MFAS), Algal Bloom Information Service (ABIS), and Coral Bleaching Alert System (CBAS). The MFAS provides advisories on Potential Fishing Zone (PFZ) and tuna fishery. The PFZ advisories detect major fishing grounds, helping increase catch and reduce fishing costs. ABIS provide information and early warnings of algal blooms. CBAS monitor coral reefs' health by detecting coral bleaching events around major Indian islands and supporting conservation and climate resilience. The Water Quality Now casting System (WQNS) delivers updates on coastal health by disseminating data on multiple water quality parameters. WQNS operates at two key locations, utilising measurements from autonomous water quality observatories onboard moored buoys. This study also highlights the ongoing research towards developing marine ecological services on jellyfish aggregation, species-specific marine fisheries, and front-based PFZ characterization. The Jellyfish Aggregation Advisory Service (JAAS) aims to identify environmental triggers and provide early warnings on jellyfish swarming and beach stranding. Species-specific marine fisheries aim to provide region-specific information on the expected abundance and distribution of specific fish species (Hilsa, Sardine, and Mackerel). Such information will aid the fishing industry and the fishermen in targeting their efforts more effectively and in reducing the environmental impact of fishing. Page(s): 276-293

2024-05-01T00:00:00Z Das, Arnab http://nopr.niscpr.res.in/handle/123456789/66173 2025-07-23T10:18:05Z 2024-05-01T00:00:00Z

Title: Transforming Sri Lanka's Maritime Future with UDA Framework Authors: Das, Arnab Abstract: Sri Lanka, an island nation with a massive civilisational legacy, has an advantageous geostrategic location in the Indian Ocean. The geopolitical power play pushed Sri Lanka into a hotbed of strategic manoeuvres. The tropical waters of the Indian Ocean Region (IOR) have massive potential for economic growth and prosperity. However, the absence of homegrown technology made the region dependent on the west-driven technology and know-how, which underperformed there as they were developed to work in temperate and polar waters. The governance mechanism has to be strong to retain strategic autonomy by building its internal capabilities. Digital transformation is the de facto tool for governance like the Marine Spatial Planning (MSP), promoted as the tool for enhanced ocean governance by the United Nations. This paper discusses the digital transformation with a special focus on Sri Lanka as a case study to prioritise Underwater Domain Awareness (UDA) for safe, secure, and sustainable growth for the tropical waters of the IOR. Page(s): 294-298

2024-05-01T00:00:00Z Panda, A Karmakar, D Rao, M http://nopr.niscpr.res.in/handle/123456789/66171 2025-07-23T10:16:28Z 2024-05-01T00:00:00Z

Title: Oblique wave interaction with pile-restrained dual H-shaped breakwater Authors: Panda, A; Karmakar, D; Rao, M Abstract: The hydrodynamic performance of pile-restrained dual H-shaped floating breakwater is investigated using the small amplitude wave theory considering oblique wave incidence. The research on a single H-shaped floating structure supported by the piles has demonstrated effective wave reflection and wave trapping due to its distinctive configuration, composed of a vertical member called a web and a horizontal member called a flange. Thus, the dual H-shaped breakwater is proposed to enhance the breakwater’s efficiency and to provide additional support to the leeside structure. The present analysis is performed by varying the structural parameters such as the width and submergence draft of the web, flange width of the dual H-shaped breakwaters and the corresponding effect on the hydrodynamic coefficients along with the wave-induced force acting horizontally on the breakwater using Multi-Domain Boundary Element Method (MDBEM). Based on the study, the leeside structure experiences a greater wave force than the primary H-shaped structure placed seaside for the critical angle of incidence. The dual H-shaped breakwater is noted as a highly effective harbour defence solution based on the structural and design specifications. The dual H-shaped pile-restrained floating breakwaters provide protection by absorbing the highest wave force and releasing a significant quantity of wave energy. Page(s): 299-309

2024-05-01T00:00:00Z