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Title

Simulation and analysis of marine hydrodynamics based on the El Niño scenario

Year: 1400
COI: JR_GJESM-7-4_004
Language: EnglishView: 73
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Authors

M. Ikhwan - Graduate School of Mathematics and Applied Science, Universitas Syiah Kuala, Banda Aceh ۲۳۱۱۱, Indonesia
R. Wafdan - Department of Marine Sciences, Faculty of Marine and Fisheries, Universitas Syiah Kuala, Banda Aceh ۲۳۱۱۱, Indonesia
Y. Haditiar - Department of Marine Sciences, Faculty of Marine and Fisheries, Universitas Syiah Kuala, Banda Aceh ۲۳۱۱۱, Indonesia
M. Ramli - Department of Mathematics, Universitas Syiah Kuala, Banda Aceh ۲۳۱۱۱, Indonesia
Z. Muchlisin - Graduate School of Mathematics and Applied Science, Universitas Syiah Kuala, Banda Aceh ۲۳۱۱۱, Indonesia
S. Rizal - Graduate School of Mathematics and Applied Science, Universitas Syiah Kuala, Banda Aceh ۲۳۱۱۱, Indonesia

Abstract:

BACKGROUND AND OBJECTIVES: El Niño - Southern Oscillation is known to affect the marine and terrestrial environment in Southeast Asia, Australia, northern South America, and southern Africa. There has been much research showing that the effects of El Niño - Southern Oscillation are extensive. In this study, a simulation of an El Niño event is carried out, which is ideal in the vertical layer of the Pacific Ocean (۰-۲۵۰ meters). The fast Fourier transform is used to process the vertical modeling data so that the results can accurately represent El Niño. METHODS: A non-hydrostatic ۳-dimensional numerical model is used in this research. To separate the signal produced and obtain the quantitative difference of each sea layer, the simulation results are analyzed using the fast Fourier transform. Winds blow from the west to the east of the area in perfect El Niño weather, with a reasonably high wind zone near the equator (forming a cosine). Open fields can be found on the north and south sides, while closed fields can be found on the west and east sides. Density is uniform up to a depth of ۱۰۰ meters, then uniformly increases by ۱ kilogram per cubic meter from ۱۰۰ to ۲۵۰ meters.  FINDINGS: The results of the model simulation show that one month later (on the ۳۷th day), the current from the west has approached the domain's east side, forming a complete coastal Kelvin wave. The shape of coastal Kelvin waves in the eastern area follows a trend that is similar to the OSCAR Sea Surface Velocity plot data obtained from ERDDAP in the Pacific Ocean in October ۲۰۱۵. In this period, the density at a depth of ۰-۱۰۰ meters is the same, while the density at the depth layer underneath is different.  CONCLUSION: Strong winds could mix water masses up to a depth of ۱۰۰ meters, implying that during an ideal El Niño, the stratification of the water column is influenced by strong winds. The eastern domain has the highest sea level amplitude, resulting in perfect mixing up to a depth of ۱۰۰ m, while wind effect is negligible in the lower layers. The first layer (۰-۵۰ m) and the second layer (۵۰-۱۰۰ m) have the same density and occur along the equator, according to FFT. The density is different and much greater in the third layer (۱۰۰-۱۵۰ m). ==========================================================================================COPYRIGHTS©۲۰۲۱ The author(s). This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY ۴.۰), which permits unrestricted use, distribution, and reproduction in any medium, as long as the original authors and source are cited. No permission is required from the authors or the publishers.========================================================================================== 

Keywords:

Density , El Niño-Southern Oscillation (El Niño) , Pacific Ocean , Sea Level , The fast Fourier transform (FFT)

Paper COI Code

This Paper COI Code is JR_GJESM-7-4_004. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/1225796/

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If you want to refer to this Paper in your research work, you can simply use the following phrase in the resources section:
Ikhwan, M. and Wafdan, R. and Haditiar, Y. and Ramli, M. and Muchlisin, Z. and Rizal, S.,1400,Simulation and analysis of marine hydrodynamics based on the El Niño scenario,https://civilica.com/doc/1225796

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