PEMBUATAN PETA LAT INDONESIA BERDASARKAN MODEL PASUT GLOBAL TPXO 9.0

• Main Author: Krista Ginting, Brema
• Format: Final Project
• Language: Indonesia
• Subjects: Karya Umum
• Online Access: https://digilib.itb.ac.id/gdl/view/56765
• Institution: Institut Teknologi Bandung

The Lowest Astronomical Tide (LAT) map is needed for Indonesia as one of the maritime countries in the world which has quite a large water area. Indonesia has superior marine potentials, such as the potential for managing marine resources. In addition, shipping and sea transportation activities also require sea depth information, which requires a LAT map in its manufacture. Based on the definition from the International Hydrographic Organization (IHO, 2005), the Lowest Astronomical Tide (LAT) is internationally used as the Chart Datum, which is a reference to the water level used for Hydro-Oceanographic surveys. This LAT was determined by tidal predictions for 18.61 years. In this study, it will be determined how the LAT value is predicted based on the TPXO 9.0 global tide model. In determining LAT, tidal component analysis and prediction were carried out. Sea level prediction was carried out for 18.6 years to obtain the lowest position of sea level which is influenced by all astronomical and meteorological conditions. The results of the tide prediction based on the global tidal model TPXO 9.0 show the LAT value in all Indonesian waters. The LAT values predicted from the tidal constants of the global tidal model TPXO 9.0 are presented using ArcGIS software in the form of LAT maps. The LAT map shows the largest LAT values are in the Arafura Sea and the smallest LAT values are in the Java Sea. Most water areas in Indonesia have LAT values in the range of 1-1.5 m below MSL.