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All Journal Jurnal Teknik Pengairan: Journal of Water Resources Engineering Journal of Science and Science Education (JoSSEd)
I Wayan Yasa
University of Mataram
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Neuroscience Physics

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Assessment of Duration and Frequency of Drought by Percent Normal Precipitation Index (PNPI) for Lombok Island Humairo Saidah; Muh. Bagus Budianto; I Wayan Yasa; Syamsul Hidayat; I Dewa Gede Jaya Negara; Heri Sulistiyono
Journal of Science and Science Education Vol. 3 No. 1 (2022): April
Publisher : Pascasarjana, Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (939.311 KB) | DOI: 10.29303/jossed.v3i1.1452

Abstract

Meteorological drought is a climatic condition categorized by a scarcity of rainfall. Understanding the drought characteristics is a significant step appointed uncertain climate conditions due to current global climate change. This study aims to assess the duration and frequency of drought using the Normal Precipitation Index (PNPI) method to identify drought characteristics in the study area. The PNPI revealed a spatial variation in percent value monthly rainfall to average rainfall across the island of Lombok that prolonged and severe droughts have occurred in entire study areas with varying duration and frequency. PNPI method in analyzing drought events in the island of Lombok showed that Sopak is the driest area and Sekotong is the wettest one
Evaluasi Rasionalisasi Stasiun Hujan Metode Kagan Rodda dengan Mempertimbangkan Kriteria Penentuan Lokasi Pembangunan Stasiun Hujan Reza Renaldhy; I Wayan Yasa; Ery Setiawan
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 12 No. 1 (2021)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2021.012.01.05

Abstract

This study aims to evaluate the rain station rationalization method using Kagan. In its application, the Kagan method can give results in the form of the number of stations and the location of the placement of the rain station network in an area. However, in its application in the field, the recommendation in the form of placement points does not meet the location criteria for the construction of a rain station. The results of the evaluation carried out at WS Sumbawa show that there are 116 rain stations that need to be added, but after being evaluated using Google Earth to see the suitability of the location against the criteria for the location of the rain station construction, only 36 points meet the criteria. To optimize this method, the recommendation points that do not meet the requirements are moved to the nearest water structure location such as a dam, embung or weir, so that 19 points are moved to the nearest water structure and 61 points are not recommended for the construction of a rain station. These results prove that the recommended number and placement points from the rationalization analysis of the Kagan method cannot be directly applied in the field, the recommendations given must be re-evaluated by taking into account the principles in determining the location of rain post construction.
Co-Authors Ery Setiawan Heri Sulistiyono Hidayat, Syamsul Humairo Saidah I Dewa Gede Jaya Negara Muh. Bagus Budianto Reza Renaldhy