ANALYSIS OF RAINFALL INTENSITY, DURATION, AND FREQUENCY RELATIONSHIP USNG GSMAP SATELLITE DATA (Case Study : Papua Province and West Papua Province)

• Main Author: Kesuma Suseno, Prana
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/36281
• Institution: Institut Teknologi Bandung

Papua and West Papua Provinces are one of the areas with the highest precipitation rates on Earth with an average of 2,500 - 4,500 mm per year and can even reach more than 7,000 mm per year. Currently the Indonesian government prioritizes equitable development of infrastructure, especially Papua. In planning the development of historical data rainfall is one of the factors that needs to be taken into account. In this study, an analysis of IDF relations for the entire Papua region was carried out. But the limitations of the data result in the selection of methods to be considered. So this study uses a method built by Chen (1983). In addition, this study also uses GSMaP version 6 satellite data from 1 January 2001 - 31 December 2012. With a 1 hour temporal resolution and a 0.1 degree spatial resolution. The highest annual rainfall is found at the Timika observation station with a value of 5191 mm per year. While the lowest rainfall is indicated by Jayapura Station with 1852 mm. The value of rainfall in Papua ranges from 3,300 mm to 10,600 mm per year. Meterological parameters a, b, and c have a same pattern that has a different range of values, namely parameter a ranges from 2.24 - 4.21, parameter b ranges from (-5.23) - (-3.21), and parameter c ranges from 0.17 - 0.28.