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All Journal Aceh International Journal of Science and Technology Rona Teknik Pertanian
Susi Chairani
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Engineering

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Runoff Prediction Using an Aggregation Hydrology Model on Seulimum River Sub Watershed, Aceh Province, Indonesia Susi Chairani; T. Ferijal; Ulva Heryanty
Aceh International Journal of Science and Technology Vol 3, No 3 (2014): December 2014
Publisher : Graduate Program of Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (569.463 KB) | DOI: 10.13170/aijst.3.3.1998

Abstract

The objective of the present study was to predict the runoff in Seulimeum River sub watershed by utilizing an aggregation hydrology model. The method in this research consisted of field observation, collecting data and map, testing model, and analyzing data. Some parameters were used as the inputs on the model, such as: maximum storage, actual groundwater storage, soil moisture, and the constant of soil moisture k(t). The aggregation hydrology model was tested using 3 (three) statistical parameters, such as; determination coefficient (R2), biased percentage (PBIAS), and Nash-Sutcliffe coefficient (ENS). The result showed that the minimum runoff occured in 1998 was 70.22 mm and the maximum runoff occurred in 1987 was 759.12 mm. The model testing showed that the aggregation hydrology model had a good performance in predicting the discharge of Krueng Seulimemum Sub Watershed; the R2, P biased, and ENS resulted 0.92, -5.21%, and 0.90, respectively
Analisis Evapotranspirasi dengan Menggunakan Metode Thornthwaite, Blaney Criddle, Hargreaves, dan Radiasi Juanda Wirawan; M Idkham; Susi Chairani
Rona Teknik Pertanian Vol 6, No 2 (2013): Volume 6, No. 2, Oktober 2013
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v6i2.20429

Abstract

Abstrak. Penelitian ini bertujuan untuk menganalisis evapotranspirasi dengan menggunakan beberapa metode yaitu metode Thornthwaite, Blaney Criddle, Hargreaves, dan Radiasi. Data klimatologi diambil dari dua stasiun yang berbeda, yaitu BMKG Blang Bintang dan Stasiun Klimatologi Indrapuri, Kab. Aceh Besar. Dari hasil penelitian diperoleh bahwa evapotranspirasi potensial (Eto) menunjukkan Eto yang terdapat pada BMKG Blang Bintang lebih tinggi dari pada Stasiun Klimatologi Indrapuri. Perbedaan hasil perhitungan Eto yang terjadi pada setiap metode dipengaruhi oleh data-data iklim yang dipakai. Nilai evapotranspirasi potensial (Eto)yang tertinggi diperoleh dengan menggunakan metode Thornthwaite dan yang terendah dengan menggunakan metode Radiasi. Suhu, curah hujan, radiasi matahari, kecepatan angin, kelembaban udara, tekanan udara, dan lama penyinaran matahari adalah faktor-faktor yang sangat mempengaruhi proses evapotranspirasi potensial. Beberapa metode yang aplikatif untuk menghitung evapotranspirasi.Abstract. The aim of this research is to analyze the evaporation using several methods, such as: Thornthwaite, Blaney Criddle, Hargreaves, and Radiation. Climatology data were taken from two climatological stations: Board of Meteorological, Climatology, and Geophysics of Blang Bintang and Climatology Station of Indrapuri in Aceh Besar District. The results showed that potential evapotranspiration (Eto) in Blang Bintang was higher than the potential evapotranspiration in Indrapuri. The differences of potential evapotranspiration occurred due to different methods used in the calculation. The highest potential evapotranspiration (Eto) obtained using Thornthwaite method and the lowest potential evapotranspiration (Eto) obtained using Radiation method. Temperature, precipitation, solar radiation, wind speed, moisture, air pressure, and the length of solar radiation were the factors that influenced the process of potential evapotranspiration (Eto). Several applicable methods in calculating the potential evapotranspiration (Eto) in Blang Bintang  and Indrapuri were Blaney Criddle, Hargreaves and Radiation methods.
Co-Authors Juanda Wirawan M Idkham T. Ferijal Ulva Heryanty