HUJAN RENCANABERDASARKAN ANALISIS FREKUENSI REGIONAL DENGAN METODE TL-MOMENT

Segel Hendrycus Ginting

Abstract


Hujan rencana dengan menggunakan analisis frekuensi regional memberikan keuntungan pada sekelompok data yang memiliki jumlah data terbatas. Data minimal yang digunakan dalam menghitung besarnya hujan rencana memiliki tingkat kesalahan yang sangat besar untuk hujan rencana pada periode yang sangat tinggi. Oleh karena itu, maka digunakan analisis frekuensi regional berdasarkan pendekatan TL-momen. Jenis distribusi yang digunakan terdiri dari tiga yaitu Generalized Extreme Value (GEV), Generalized Pareto (GPA) dan Generalized Logistic (GLO). Dari ketiga jenis distribusi yang digunakan hanya Generalized Extreme Value (GEV) dan Generalized Logistic (GLO) yang mendekati nilai rata-rata regionalnya berdasarkan TL-Moment Ratio sementara berdasarkan hasil pengujian Z distribusi menunjukkan Generalized Extreme Value (GEV) memberikan hasil yang terbaik. Dengan demikian, maka hujan rencana yang dihitung berdasarkan analisis frekuensi regional di DAS Jakarta menggunakan Generalized Extreme Value (GEV) telah dapat ditentukan.


Keywords


Hujan Rencana, Jakarta, Analisis frekuensi regional, TL-momen

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DOI: https://doi.org/10.32679/jsda.v12i1.290

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