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HERI SULISTYONO
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ANALISIS KARAKTERISTIK KEDALAMAN HUJAN DAN IKLIM DI PULAU LOMBOK I WAYAN YASA; YUSRON SAADI; HERI SULISTYONO; ERY SETIAWAN; HARTANA HARTANA; I DEWA GEDE JAYA NEGARA
GANEC SWARA Vol 15, No 2 (2021): September 2021
Publisher : Universitas Mahasaraswati K. Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35327/gara.v15i2.219

Abstract

Climate and rain parameters are important factors that affect the availability of water resources on the earth's surface. The phenomenon of climate change that occurs today has an impact on the depth and distribution of rain and climatological parameters. The existence of rain and climate on Lombok Island changes very significantly every year. These changes affect various sectors, especially the irrigation sector. Thus, various adjustments must be made, such as adjusting the time of planting, cropping patterns and the types of plants being cultivated. In this case, knowledge about the characteristics of rain and climate that occurs on the island of Lombok is very important to know the pattern and magnitude of the incident as well as the time of the incident. This study was conducted to determine the condition of each climate variable in the Lombok island region by calculating the monthly average for 25 years. The smoothing uses the Theissen polygon method by utilizing 19 scattered rain station data and 4 climatological stations. Based on the analysis carried out, the results showed that the average monthly temperature ranged from 26.17-27.09°C, humidity 87.70-89.83%, sunlight 39.79-69.44%, and wind speed 53 ,73-110,21knot. The highest rainfall occurred in January of 235.33 mm, while the lowest occurred in August of 18.12 mm.
PENENTUAN KOEFISIEN RESESI UNTUK PERAMALAN DEBIT SETENGAH BULANAN SUNGAI JANGKOK: The Determination of Recession Coefficient for a Half Monthly Jangkok River Flow Forecasting Humairo Saidah; Muh Bagus Budianto; Lilik Hanifah; Heri Sulistyono; Agustono Setiawan
Spektrum Sipil Vol 5 No 1 (2018): SPEKTRUM SIPIL
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Mataram

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Abstract

Perkiraan debit sungai pada dua minggu atau sepuluh hari yang akan datang adalah hal krusial yang harus diketahui sebelum Panitia Irigasi melakukan pembagian air. Teknik perkiraan yang tepat akan mendukung Rencana Alokasi Air Global (RAAG) yang andal, efisien dan memenuhi rasa keadilan bagi masyarakat. Metode resesi dipilih untuk diaplikasikan karena debit yang akan datang ditentukan dengan cara mengenali karakteristik aliran saat aliran rendah yang dianggap lebih sesuai dan masuk akal, khususnya dalam memprediksikan debit pada saat aliran rendah. Hasil studi menyimpulkan bahwa penentuan nilai faktor resesi (faktor k) menjadi penentu keberhasilan kinerja metode ini. Faktor k akan memberi kinerja lebih baik jika diperoleh dari data debit saat musim kemarau saja, yaitu sekitar awal Juni hingga akhir September. Faktor k yang diperoleh untuk Sungai Jangkok adalah sebesar 0.0459, sehingga persamaan untuk peramalan debit pada Sungai Jangkok adalah Qt = Q0 e-0.0459 t. Kinerja nilai faktor k ini dalam memprediksi debit 10 harian (dasarian) mendatang adalah cukup baik dengan mean errors -0.46 m3/det, RMSE 0.26 m3/det dan koefisien korelasi sebesar 0.67.
Co-Authors Agustono Setiawan ERY SETIAWAN HARTANA HARTANA Humairo Saidah I Dewa Gede Jaya Negara I Wayan Yasa Lilik Hanifah Muh Bagus Budianto Yusron Saadi