Related Experiment Videos
Tidal eddies in a semi-enclosed basin: a model study.
P Vethamony1, G S Reddy, M T Babu
1National Institute of Oceanography, Dona Paula, Goa 403 004, India. mony@darya.nio.org
Marine Environmental Research
|December 18, 2004
Summary
This study models Gulf of Kachchh hydrodynamics to inform marine management. Findings show a dynamic barrier divides the gulf, impacting pollutant dispersal and requiring caution for upstream industries.
Area of Science:
- Marine science
- Oceanography
- Environmental modeling
Background:
- The Gulf of Kachchh, India, requires a Marine Management Plan.
- Understanding the Gulf's hydrodynamic processes is crucial for effective management.
Purpose of the Study:
- To describe the hydrodynamic modeling component of a Marine Management Plan for the Gulf of Kachchh.
- To validate the model's accuracy in predicting tides and tidal currents.
- To analyze residual currents and predict the movement of surface floating particles.
Main Methods:
- A hydrodynamic model was developed and utilized.
- Model predictions of tides and tidal currents were validated with available measured data.
- Time-averaged residual currents were analyzed over one lunar cycle.
- Simulations of surface floating particle movement were conducted.
Main Results:
- The hydrodynamic model accurately predicts tides and tidal currents in the Gulf.
- The model reproduces complex, small-scale, topographically induced flows and eddies.
- A significant dynamic barrier exists along the Sikka-Mundra section, dividing the Gulf.
- Pollutants discharged upstream of this barrier may persist in the vicinity for at least one lunar cycle.
Conclusions:
- The hydrodynamic model provides a valuable tool for the Marine Management Plan.
- The identified dynamic barrier has critical implications for waste management and pollutant dispersal.
- Industries upstream of the Sikka-Mundra barrier must exercise extreme caution regarding waste discharge.