STUDI POLA ARUS PASANG SURUT DAN GELOMBANG DI DESA PONGKAR KECAMATAN TEBING KABUPATEN KARIMUN PROVINSI KEPULAUAN RIAU

Abstract

The research was conducted in August 2012, which took place in the waters of Beach Cliff Pongkar Sub District Karimun Riau Islands Province. This study aimed to determine the pattern of tidal currents and wave characteristics. The method used in this study is a survey method in the determination of station data retrieval consists of 3 stations and 1 station consists of 3 sampling points around the coast. Data retrieval research done at low tide and ebb tide towards the approaching tide. Beaches Pongkar a coastal area that has a relatively narrow beach, sand bersubstrat, located along the coast line along the coast so there are Pongkar vegetation Coconut tree (Cocos nucifera), Fir Tree (Casuaria equesetifolia). Characteristics include wave height, period and wavelength at high tide and low tide at station 2 is the largest when compared with the two other stations. Pongkar inshore depth value is average - average 1.52 m - 1.66 m at high tide and 0.86 m - 1.09 m at low tide. Flow patterns that occur when tidal flow is towards the East, at low tide reverse flow towards the West with the type of flow is the flow along the coast (Longshore current) type tidal ebb and flow that happens is a daily mix biased toward a double (Mixed, dominant semidiurnal) which occurs twice ups and downs twice in one day but different heights.