John, Sebin and Muraleedharan, K R and Revichandran, C and Vineetha Valsalan, K C and Kripa, V and Abdul Azeez, S and Seena, G and Nair, Ravi Kumar C (2020) Good Environment Management of cage farming using a coupled 3D hydrodynamic particle tracking model - A case study from Pizhala, Cochin, India. Journal of the Marine Biological Association of India, 62 (1). pp. 100-108.
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Abstract
Hydrographic conditions such as water level, velocity, adequate water circulation and stratifications have a strong influence on the management of fish cage culture in the estuarine environment. In this study, a 3D hydrodynamic model was used to identify the areas of the mixed and stratified water column and to use this in conjunction with particle tracking models for appropriate site selection for cage culture. A Lagrangian method was used to simulate the instantaneous release of "particles" emulating discharge from fish cages to show the behaviour of waste in terms of water circulation and water exchange. Model simulation at Pizhala cage farm revealed that desirable water exchange is experienced in the monsoon and pre-monsoon period. There have existed strong spring-neap variability in the water level with an average range of 0.7 m with a speed of < 0.12 m/s in pre-monsoon and < 0.24 m/s in monsoon. This consistent flow patterns in the Pizhala region helps in the replenishment of oxygenated water and removal of waste produced beneath the cages, and it is corroborated by the Lagrangian particle transport model experiment coupled with Finite Volume Community Ocean Model (FVCOM) in the study.
| Item Type: | Article |
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| Uncontrolled Keywords: | Cochin Estuary, hydrodynamics, modelling, aquaculture |
| Subjects: | Aquaculture > Cage culture Aquaculture |
| Divisions: | CMFRI-Kochi > Fishery Environment Management Division Subject Area > CMFRI > CMFRI-Kochi > Fishery Environment Management Division CMFRI-Kochi > Fishery Environment Management Division Subject Area > CMFRI-Kochi > Fishery Environment Management Division |
| Depositing User: | Arun Surendran |
| Date Deposited: | 12 Oct 2020 06:49 |
| Last Modified: | 13 Mar 2023 07:11 |
| URI: | http://eprints.cmfri.org.in/id/eprint/14682 |
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