CURRENT CHARACTERISTICS IN DEMAK WATERS BASED ON ACOUSTIC MEASUREMENT

Current has the important role of the hydrodynamics process in the ocean because it can move particles in the sea. Demak is the region located in the Northern Coast of Central Java, Indonesia which is one of the largest abrasion in Indonesia. Many factors that possibly impact abrasion such as the current. This research was conducted in Demak Waters by using ADCP (Acoustic Doppler Current Profiler) to measure current speed and direction in 5 cell. In data analysis, tidal current was the dominance current in this location because of the current patterns mostly were followed by tidal. Based on the analysis of the current characteristic, the largest speed was about 32.6 cm/s in the depth from 0 to 2 meter, so the surface current has the largest velocity other than current in the depth below. The direction of currents were varies, but the most frequent of current flowing to Southeast and Southwest