THE DETERMINATION OF OCEANOGRAPHIC PHYSICAL PROPERTIES AT THE COASTAL AREA OF TEGAL CITY

Abstract

Throughout our observations, the coastal area of Tegal has not been equipped with geological data and oceanographic data, especially the distribution of ocean current patterns around the coastal area of Tegal City. It is very important to know the nature of the pattern of ocean currents near the coast because the coastal area is for recreational activities and shipping activities to and from the port. The speed of ocean currents and where they are heading needs to be described so that the users of the coastal area can monitor well about the danger or not. In the study of the current pattern at the coastal area of Tegal City, the tool used was designed based on the Lagrangian method and the Helmholtz method to obtain the direction and magnitude of the ocean current's velocity. The problem in determining the current pattern is that the current signal is the result of various signals having a certain frequency generated by several different forces. The next problem in determining the height of the waves, the initial coordinate point is needed as the zero point. From this problem, researchers are interested in the current pattern that is formed. Ocean currents are the mass movement of seawater from one place to another, either vertically (upward motion) or horizontally. The purpose of this study finds the energy of ocean currents and the physical properties of oceanography near the coast, to get the level of danger if used for recreational areas, shipping activities, and research activities.