Ayu W. Pramita’s scientific contributions

The Java Sea is an interesting part of Indonesian waters to be studied, because it has a great of marine biological resources, especially for marine fisheries. Until now, wave model data has become the main tool for providing sea wave height information, this condition is caused by the limited observation equipment to obtain ocean data. This study aims to understand the sea wave height patterns in the Java Sea using the Wavewatch-III model, and to determine the accuracy of the Wavewatch-III model data with observation data. Based on the output of the Wavewatch-III model, the significant wave height (Hs) in the Java Sea during the West Season period (DJF) obtained a range between 0.2 m - 1 m, with the dominant direction of the sea wave from the West, in the Transition Season I (MAM) period, the significant wave height in the Java Sea obtained a range between 0.4 m - 0.8 m, and the dominant direction of sea waves comes from the Southeast to the Northwest, in the East Season (JJA), significant wave height in the Java Sea obtained a range between 0.6 m - 1.4 m, with the dominant direction of sea waves coming from the Southeast to the Northwest, and in the Transition II (SON), significant wave height in the Java Sea obtained a range between 0.2 m - 0.4 m, with the dominant direction of sea waves coming from the Southeast to the West. The significant wave height peaks in the Java Sea occur during the East Season (JJA). The results of Wavewacth-III comparison with ECMWF, obtained a good correlation value, while comparison with observational data, obtained a low correlation value, and the wave height value of Wavewatch-III is higher than observation. The results of the comparison of the Wavewacth-III model with the ECMWF model show that Wavewatch-III has good performance with a CF value of 0.04, and an error value of 35.5%. While the comparison of the Wavewatch-III model to the observation data, a low correlation value is obtained, which is only 0.32 and the Hs value of the Wavewatch-III model is higher than the observation.