Abstract

Indonesia is a country that has a large water area compared to its land area. In a waters there are physical parameters that occur at any time, one of which is tides and currents. Tides in Kambunong Island waters occur twice highs and two lows within 24 hours. At high tide, the water will rise to the yard of the residents' houses, and at low tide, the water will recede to the end of the pier, the length of the pier is about 160 m. The occurrence of tides will result in a current pattern. The purpose of this study was to determine the types of tides, the effect of tides on current patterns, and to model current patterns in the waters of Kambunong Island. The research was carried out in November-December 2022 at Kambunong Island, Kambunong Village, Karossa District, Central Mamuju Regency, West Sulawesi Province. The method used in processing tidal data is the Least Square Method, processing current data using the help of software belonging to Marinegeophysics, namely MarroteHsconfig. Modeling the current pattern using software, namely Mike 21. The results of the study explain the type of tides in the waters of Kambunong Island. The main factor for the occurrence of the pattern of currents is the tides, and the modeling shows that the pattern of currents in the waters of Kambunong Island occurs in 4 conditions, namely high tide, high tide, low tide and low tide. Based on the results of the study it can be concluded that Kambunong Island waters have a Double Daily Leaning Tidal Type, tides have a very large influence on the current pattern in Kambunong Island waters, and the modeling results show 4 conditions for the occurrence of current patterns, namely high tide, highest tide, low tide, and lowest ebb.