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All Journal Jurnal Fisika Unand Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Verojenases, Fascal
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Aerospace Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Identifikasi Kualitas Udara di Sekitar PLTU Teluk Sepang, Kota Bengkulu Verojenases, Fascal; Angeli Silaban; Samuel Christian Alfredo Banjarnahor; Irkhos; Lizalidiawati
Jurnal Fisika Unand Vol 14 No 4 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.4.368-378.2025

Abstract

PLTU Teluk Sepang uses coal as the main fuel and has the potential to reduce air quality in the vicinity. This study aims to identify the air quality around PLTU Teluk Sepang and its impact on the environment and public health. The data used are PM2,5, PM10, CO, and CO2 at seven location points in June and July 2024. The method in this research is quantitative and descriptive, quantitative is used to compare the measurement results with the threshold set by the government, while descriptive is used to visualize the data in the form of graphs and distribution maps. The results showed that PM2,5 and PM10 levels at several points exceeded the specified thresholds, especially near the PLTU and traffic road areas, which fell into the “Unhealthy.” category. CO levels are still within safe limits, while CO2levels are in the polluted air category, and the increase in pollutants at night indicates a significant impact of PLTU activities on air quality. This study shows that the air quality around Teluk Sepang PLTU is in a polluted condition, so mitigation measures are needed to control air pollution for public health and the environment.
Sea Level Anomaly Variability Due to Global Climate in the Western Waters of Sumatra Banjarnahor, Samuel Kristian Alfredo; Silaban, Angeli; Verojenases, Fascal; Irkhos, Irkhos; Lizalidiawati, Lizalidiawati
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 69 No 2 (2025): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v69i2.534

Abstract

The western waters of Sumatra are part of the Indonesian waters that directly interact with the Indian Ocean, which is a climatologically complex area due to influenced by various atmospheric and marine phenomena that are seasonal and inter annual. Therefore, the purpose of this study is to analyze the influence of the El Niño Southern Oscillation (ENSO) phenomenon on changes in sea level in Western Sumatra waters during the period of 1997-2023. The data used include sea level anomaly (SLA), Oceanic Niño Index (ONI), and Dipole Mode Index (DMI). The results show that strong El Niño, such as in 1997/1998, cause sea level to drop to - 0.3 meters due to intense upwelling. In contrast, El Niño 2015/2016 increased sea level by + 0.2 meters due to the dominance of down welling. During the La Niña period, sea level rose significantly, reaching 0.3 meters in 2022/23. The long-term trend shows an average sea level rise of 0.056-0.064 meters over the last 26 years, with different variations between regions.
Co-Authors Angeli Silaban Banjarnahor, Samuel Kristian Alfredo Irkhos Irkhos Irkhos Lizalidiawati Lizalidiawati Lizalidiawati Samuel Christian Alfredo Banjarnahor Silaban, Angeli