MODEL EKOSISTEM 2 DIMENSI DI PERAIRAN PANTAI BANJIR KANAL TIMUR SEMARANG.

• Main Author: Nugroho Sugianto, Denny
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/5492
• Institution: Institut Teknologi Bandung

<b>Abstract :</b><p align=\"justify\"> <br /> The distribution pattern of the nitrogen, ammonium, nitrite, nitrate, phytoplankton and zooplankton concentration in the coastal area of Pantai Banjir Kanal Timur Semarang might be approached by using the ecosystem model which were constructed from several kinetic equations related to the nitrogen cycle phenomena, included the accompanied chemical and biological processes as well as various physical phenomena. The model was constructed from two-dimensional transport model using the Quickest method, while its application was combined with the two step semi implicit hydrodynamic model. <br /> <p align=\"justify\"> Generally, the field investigation and the model simulation showed that the simulation treatment using kinetic and without kinetic equations resulted the differences about 7,5% for 47 days simulation (tidal current), 3,23% for 15 days simulation (tidal current), and 2,85% for 15 days simulation (tidal and wind-driven current). <br /> <p align=\"justify\"> The ecosystem model verification using the field data showed relative error differences about 16,01% for 47 days simulation (tidal current), and 24,24% for 15 days simulation (tidal current), and 22,54% for 15 days simulation (tidal and wind-driven current). <br /> <p align=\"justify\"> The ecosystem model using simulation time closer to the residence time of the nitrogen compound showed better result with the smaller relative error compared to the field data. Generally, the wind parameter within the ecosystem model simulation is capable of reducing the relative error up to 1,7% for 15 days simulation.