Author(s): Surya Hermawan; Daniel Tjandra; Joko Purnomo
Linked Author(s):
Keywords: Hydrodynamic model; Mariculture; Assessment; Decision support system; Indonesia
Abstract: Indonesia has a great potential for developing the mariculture industry. However, during the operation faced a lot of problems due to hydrodynamic environment engineering fields. The main case was the misplaced location of the mariculture development with respect to the weak sea current in the vicinity area. Meanwhile, the accomplishment of sustainable practices and management systems to preserve coastal environments is still in its infancy. At this manuscript, the assessment utilizes 2-dimensional numerical models in Decision Support System at the Ekas Bay for the development floating net cage grouper mariculture in Lombok, Indonesia. Simulations were carried out by applying the open source of Delft3D modeling system which was fully integrated with modeling framework for the simulation, among others of flow and waves. The significant results of this investigation with respect to physical characteristics of the marine environment of Ekas Bay show that the current magnitude can generally be categorized as weak. A current speed of less than 0.05 m/s is of course too weak to cover the minimum requirement for the flushing of a mariculture farm and provides a possible explanation for previous business failures in the region. The results of applying Decision Support System showed that this area is not an appropriate location for future floating net cage grouper mariculture development considering its physical characteristics including current speed and wave height. These outcomes prove that hydrodynamic model can be used as an initial assessment for decision maker for future development of sustainable mariculture industry in Indonesia.
Year: 2018