Proceedings of the 5th International Conference on Law, Social Sciences and Education, ICLSSE 2023, 1st June 2023, Singaraja, Bali, Indonesia

Research Article

GIS Application for Mapping Monthly Rainfall for the Period 1995-2004 Using the Isohyet Method (Case Study: Buleleng Regency)

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  • @INPROCEEDINGS{10.4108/eai.1-6-2023.2341416,
        author={Made  Dwipayana and I Gede Putu Eka  Suryana},
        title={GIS Application for Mapping Monthly Rainfall for the Period 1995-2004 Using the Isohyet Method (Case Study: Buleleng Regency) },
        proceedings={Proceedings of the 5th International Conference on Law, Social Sciences and Education, ICLSSE 2023, 1st June 2023, Singaraja, Bali, Indonesia},
        publisher={EAI},
        proceedings_a={ICLSSE},
        year={2023},
        month={12},
        keywords={rainfall isohyet buleleng regency},
        doi={10.4108/eai.1-6-2023.2341416}
    }
    
  • Made Dwipayana
    I Gede Putu Eka Suryana
    Year: 2023
    GIS Application for Mapping Monthly Rainfall for the Period 1995-2004 Using the Isohyet Method (Case Study: Buleleng Regency)
    ICLSSE
    EAI
    DOI: 10.4108/eai.1-6-2023.2341416
Made Dwipayana1,*, I Gede Putu Eka Suryana1
  • 1: Universitas Pendidikan Ganesha
*Contact email: made@undiksha.ac.id

Abstract

Rain is one of the important meteorological elements in tropical areas such as Indonesia and especially Buleleng Regency which uses a lot of land, namely as agricultural land and plantation land. This is because rainfall greatly affects the level of water availability for agricultural and plantation irrigation. The observation method by utilizing rainfall measuring posts to obtain rain data cannot describe the level of rainfall in a certain area. So that the purpose of this study is the need for a special method to obtain information or a spatial picture of rainfall, so in this study what is felt to be very representative is the isohyet method to obtain an overview of the average monthly rainfall in an area as a whole. Using the isohyet method, the spatially average monthly rainfall in the period 1995-2004 has the highest rainfall spatially in December, January and February (DJF), where the highest rainfall is in February, which ranges from 203 mm to 697 mm and the highest area is in Gitgit District. Whereas spatially the lowest rainfall is in July, August and September (JAS), where in August it has quite extreme rainfall, ranging from 4.5 mm to 44 mm and the lowest area is in the District Gerokgak (Pejarakan Village) and Tejakula District. Based on the average monthly rainfall, it can be concluded that Buleleng Regency has an average monthly rainfall that is not evenly distributed because in one region and the other there is very high inequality.