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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences International Journal of Renewable Energy Development
Nurkhalis Rahili
Research Center for Hydrodynamic Technology, National Research and Innovation Agency
Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering

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Tidal Characteristics for Disaster Preparedness in the Port Area (Case Study: Port of Semarang, Central Java) Nurkhalis Rahili; Buddin Al Hakim; Danang Ariyanto; Eny Cholishoh; Aprijanto Aprijanto; Destianingrum Ratna Prabawardani; Tjahjono Prijambodo; Gugum Gumbira
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 28, No 2 (2023): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.28.2.181-188

Abstract

Tanjung Emas Port, Semarang, is vulnerable to hydrometeorological disasters and tidal flooding due to tides and rising sea levels. The tidal flood also impacts human activities and industrial operations around the coastal area. Several measures have been taken to make the community resilient to tidal flooding and adapt to this disaster. A tidal flood happened in Semarang from May to June 2022 with a flood height of up to 210 cm. This incident disturbed the primary port operations, with more than 75% of the port area full of water. The total loss was estimated up to IDR 615 billion. Many factors influenced this incident, such as the rising sea levels due to global warming, tides, and other atmospheric conditions, causing weather anomalies. This study aims to compare and validate Geospatial Information Agency (BIG) tide data with Meteorological, Climatological, and Geophysical Agency (BMKG) tide data using three kinds of statistical test, that are mean relative error (MRE), root mean square error (RMSE), and mean absolute error (MAE). Also, to conduct tidal analysis using 11 years of tide data measurement to know the tide's characteristics in Semarang's coastal area. The result will be used to provide input for strategic steps and preparation for disaster preparedness that will occur in the near future. Tide data analysis using MIKE21, the IOS method. The result shows data comparison error < 5% and a Formzahl value of 1.797 with the type of tide mixture prevailing diurnal and the change of water level up to 10 cm.y-1.
Assessing the potential tsunami source of the Manila trench at the Bengkayang nuclear power plant site in Kalimantan using topographical details Sugeng Pribadi; Widjo Kongko; Nurkhalis Rahili; Fauzi Fauzi; Hadi Suntoko; Sapto Nugroho; Sunarko Sunarko; Telly Kurniawan; Euis Etty Alhakim
International Journal of Renewable Energy Development Vol 13, No 1 (2024): January 2024
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2024.57967

Abstract

Tsunamis pose a significant threat to the construction of Nuclear Power Plants. Therefore, it is necessary to carry out a comprehensive study regarding the potential threat of tsunamis and mitigation measures using detailed data at prospective locations. This assessment is a prerequisite for effective environmental impact planning and analysis. To determine the suitability of a prospective location, careful consideration of natural factors, including earthquakes as triggers for tsunamis, is essential. The main objective of this tsunami research is to assess the level of safety of potential locations against tsunami hazards and develop appropriate mitigation strategies. This research uses the Cornell Multigrid Coupled Tsunami (COMCOT) tsunami modeling technique. This modeling approach utilizes topographic and bathymetric data obtained through extensive field surveys. In addition, this research aims to determine the maximum tsunami height in the inundation area and identify potential tsunami hazards arising from various scenarios related to the active tectonic potential of the Philippine Manila Trench. The Bengkayang Gosong Beach area and West Kalimantan are among the candidate locations that may be affected with the estimated tsunami height being between 0.48 meters and 0.62 meters. The tsunami arrival time was between 9 hours 10 minutes to 9 hours 24 minutes. These findings play an important role in conducting comprehensive risk assessments for nuclear power plant development, ensuring that necessary steps are taken to reduce potential hazards associated with tsunamis.
Co-Authors Aprijanto Aprijanto Buddin Al Hakim Danang Ariyanto Destianingrum Ratna Prabawardani Eny Cholishoh Euis Etty Alhakim Fauzi Fauzi Gugum Gumbira Hadi Suntoko Sapto Nugroho Sugeng Pribadi Sunarko Sunarko Telly Kurniawan Tjahjono Prijambodo Widjo Kongko