HIDRODYNAMIC AND TRAJECTORY MODELLING OF MACROPLASTIC PARTICLES IN JAVA SEA
The Java Sea waters are included in WPPNRI 712, which borders the dense settlements in the north of Java Island. Along with the many human activities on Java Island, more and more waste is generated, especially macroplastic waste. Therefore, this study uses a numerical model that aims to describe...
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id-itb.:825562024-07-09T08:48:07ZHIDRODYNAMIC AND TRAJECTORY MODELLING OF MACROPLASTIC PARTICLES IN JAVA SEA Nuril Azmi, Parikesit Indonesia Final Project hydrodynamic, trajectory, macroplastic, ROMS, Java Sea INSTITUT TEKNOLOGI BANDUNG https://digilib.itb.ac.id/gdl/view/82556 The Java Sea waters are included in WPPNRI 712, which borders the dense settlements in the north of Java Island. Along with the many human activities on Java Island, more and more waste is generated, especially macroplastic waste. Therefore, this study uses a numerical model that aims to describe the hydrodynamic conditions in the Java Sea and simulate the trajectory of macroplastics in the Java Sea originating from DKI Jakarta, Cirebon City, and Surabaya City. The hydrodynamics model simulation uses the Region Ocean Modelling System with a resolution of 1/96o or 1.1 kilometres and long simulation time of 1 year from 1 January 2019 to 31 December 2019 with a time step of 60 seconds. The hydrodynamics simulation results in the form of average ocean current data per 30 minutes are used as input data to model particle trajectories using Opendrift with the assumption that the particle weight is equal to 1 kilogram. Furthermore, the trajectory model will be simulated with 2 scenarios, namely simulation every month and one year by releasing macroplastic particles every hour for scenario 1 and every month for scenario 2 continuously at 3 source points in DKI Jakarta, Cirebon, and Surabaya. In addition, each scenario has 2 different boundary conditions, namely stranded and previous. The results of the hydrodynamics model show that the ocean currents in the Java Sea are dominated by tidal currents with a magnitude of 0.01 - 1 m/s, the direction of the ocean currents is dominated to the east in one year. Particle trajectory simulation results show that in the previous boundary conditions the missing particles were 51.2% (8,599 kg) and active particles were 48.2% (8,188 kg) with the largest contribution from Jakarta. While the stranded boundary conditions show lost particles of 1.6% (271 kg), active particles 3.35% (562 kg), and trapped particles 95.05% (15,594 kg) with the largest contribution for lost particles is sourced from Cirebon, active particles and trapped sourced from Jakarta. This is due to the dynamics of ocean currents have an important role in the spread of plastic waste in the Java Sea which is dominated by tidal currents and the influence of monsoon winds coupled with the many small islands and the shape of the coastline that curves inward, so that it can trap macroplastic particles in the Java Sea. text |
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The Java Sea waters are included in WPPNRI 712, which borders the dense
settlements in the north of Java Island. Along with the many human activities on
Java Island, more and more waste is generated, especially macroplastic waste.
Therefore, this study uses a numerical model that aims to describe the
hydrodynamic conditions in the Java Sea and simulate the trajectory of
macroplastics in the Java Sea originating from DKI Jakarta, Cirebon City, and
Surabaya City. The hydrodynamics model simulation uses the Region Ocean
Modelling System with a resolution of 1/96o or 1.1 kilometres and long simulation
time of 1 year from 1 January 2019 to 31 December 2019 with a time step of 60
seconds. The hydrodynamics simulation results in the form of average ocean
current data per 30 minutes are used as input data to model particle trajectories
using Opendrift with the assumption that the particle weight is equal to 1
kilogram. Furthermore, the trajectory model will be simulated with 2 scenarios,
namely simulation every month and one year by releasing macroplastic particles
every hour for scenario 1 and every month for scenario 2 continuously at 3 source
points in DKI Jakarta, Cirebon, and Surabaya. In addition, each scenario has 2
different boundary conditions, namely stranded and previous. The results of the
hydrodynamics model show that the ocean currents in the Java Sea are dominated
by tidal currents with a magnitude of 0.01 - 1 m/s, the direction of the ocean
currents is dominated to the east in one year. Particle trajectory simulation
results show that in the previous boundary conditions the missing particles were
51.2% (8,599 kg) and active particles were 48.2% (8,188 kg) with the largest
contribution from Jakarta. While the stranded boundary conditions show lost
particles of 1.6% (271 kg), active particles 3.35% (562 kg), and trapped particles
95.05% (15,594 kg) with the largest contribution for lost particles is sourced from
Cirebon, active particles and trapped sourced from Jakarta. This is due to the
dynamics of ocean currents have an important role in the spread of plastic waste
in the Java Sea which is dominated by tidal currents and the influence of monsoon
winds coupled with the many small islands and the shape of the coastline that
curves inward, so that it can trap macroplastic particles in the Java Sea. |
format |
Final Project |
author |
Nuril Azmi, Parikesit |
spellingShingle |
Nuril Azmi, Parikesit HIDRODYNAMIC AND TRAJECTORY MODELLING OF MACROPLASTIC PARTICLES IN JAVA SEA |
author_facet |
Nuril Azmi, Parikesit |
author_sort |
Nuril Azmi, Parikesit |
title |
HIDRODYNAMIC AND TRAJECTORY MODELLING OF MACROPLASTIC PARTICLES IN JAVA SEA |
title_short |
HIDRODYNAMIC AND TRAJECTORY MODELLING OF MACROPLASTIC PARTICLES IN JAVA SEA |
title_full |
HIDRODYNAMIC AND TRAJECTORY MODELLING OF MACROPLASTIC PARTICLES IN JAVA SEA |
title_fullStr |
HIDRODYNAMIC AND TRAJECTORY MODELLING OF MACROPLASTIC PARTICLES IN JAVA SEA |
title_full_unstemmed |
HIDRODYNAMIC AND TRAJECTORY MODELLING OF MACROPLASTIC PARTICLES IN JAVA SEA |
title_sort |
hidrodynamic and trajectory modelling of macroplastic particles in java sea |
url |
https://digilib.itb.ac.id/gdl/view/82556 |
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1822282270338187264 |