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NI PUTU MIRAH SRI WAHYUNI
Faculty of Mathematics and Natural Sciences, Udayana University
Mathematics

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PERAMALAN CURAH HUJAN MENGGUNAKAN METODE ANALISIS SPEKTRAL NI PUTU MIRAH SRI WAHYUNI; I WAYAN SUMARJAYA; I GUSTI AYU MADE SRINADI
E-Jurnal Matematika Vol 5 No 4 (2016)
Publisher : Mathematics Department, Faculty of Mathematics and Natural Sciences, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MTK.2016.v05.i04.p139

Abstract

The purpose of this research is the model of forecasting rainfall using spectral analysis method. To obtain complete information on characteristics of time series data we need to examine periodicity of the data. Examining the periodicity of time series data in the frequency domain is called spectral analysis. The results of spectral analysis show that periodogram is clearly dominated by a very large peak at frequency . This frequency corresponds to period of 12 cycle per month. Based on the results of analysis of time series data rainfall is SARIMA (0,1,1)(0,1,1)12 where the model can be written as The result indicates minimum rainfall happen in January and maximum rainfall happen in August.
Co-Authors I Gusti Ayu Made Srinadi I Wayan Sumarjaya