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Fauzi, Manyuk
Universitas Riau
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Journal : JURNAL SAINTIS

 1 
Rasionalisasi Kerapatan Stasiun Hujan Wilayah Sungai Rokan Berdasarkan Data Hujan Harian dan Variasi Tingkat Kesalahan: Rationalization of Rain Station Density in the Rokan River Basin Territory Based on Daily Rain Data and Variation of Error Levels Dehas Abdaa; Manyuk Fauzi; Ari Sandhyavitri
JURNAL SAINTIS Vol. 21 No. 02 (2021)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2021.vol21(02).6839

Abstract

[ID] Sebaran lokasi dan jumlah stasiun hujan ideal akan merepresentasikan kejadian hujan untuk menunjang akurasi informasi analisis di suatu wilayah. Kerapatan stasiun hujan eksisting dikaji berdasarkan metode standar World Meteorogical Organization sedangkan analisis rasionalisasi jumlah dan sebaran stasiun hujan berdasarkan data hujan harian dan variasi tingkat kesalahan menggunakan Metode Kagan-Rodda. Metode Kagan-Rodda telah digunakan di beberapa wilayah penelitian dengan beragam kategori fisiografi dan lingkup terbatas pada daerah aliran sungai. Sehingga dirasa perlu melakukan pengembangan cakupan penelitian untuk wilayah yang lebih luas yaitu Wilayah Sungai. Lokasi penelitian adalah Wilayah Sungai Rokan dengan fisiografi dataran tropis mediteran dan sedang seluas 22.455,28 km². Stasiun hujan eksisting berjumlah 13 stasiun hujan dan 1 stasiun tidak lolos Uji F, koefisien luasan Thiessen eksisting tidak merata sebesar 165,03 km2-3.758,12 km2 (0,007-0,17), dan korelasi hujan harian sebesar 0,03-0,37. Evaluasi analisis WMO menghasilkan 7 stasiun hujan yang memenuhi standar untuk luas daerah pengaruh sebesar 1.000–2.500 km2/stasiun. Perhitungan metode Kagan-Rodda dilakukan 2 skenario kesalahan perataan, skenario I dengan kesalahan perataan (Z1) sebesar 4,93% menghasilkan 37 stasiun hujan, luasan pengaruh Thiessen 273,89 km2–1197,80 km2 (0,01-0,05), nilai r(0) sebesar 0,20, jarak antar stasiun hujan sejauh 26,36 km, dan 2 stasiun memenuhi standar WMO. Sedangkan skenario II dengan Z1 sebesar 9,72% menghasilkan 10 stasiun hujan, dimana mempertahankan 2 stasiun, memindahkan 8 stasiun dan menutup 3 stasiun diperoleh luasan pengaruh Thiessen 1.691,71 km2–2.488,21 km2 (0,08-0,11), jarak antar stasiun hujan sejauh 50,70 km, dan seluruh stasiun memenuhi standar WMO. Rasionalisasi metode Kagan-Rodda skenario II relatif mewakili luas pengaruh wilayah dibandingkan skenario I. [EN] The distribution of locations and the number of ideal rain stations will represent rain events to support the accuracy of analytical information in an area. The density of existing rain stations was assessed based on the standard method of the World Meteorological Organization, while the rationalization analysis of the number and distribution of rain stations based on daily rainfall data and variations in error rates used the Kagan-Rodda method. The Kagan-Rodda method has been used in several research areas with various physiographic categories and limited scope in watersheds. So it is necessary to develop the scope of research for a wider area, namely the River Basin. The research location is the Rokan River Basin with physiography of the Mediterranean and medium tropical plains covering an area of ​​22,455.28 km². The existing rain stations are 13 rain stations and 1 station does not pass the F test, the coefficient of the existing Thiessen area is uneven at 165.03 km2-3,758.12 km2 (0.007-0.17), and the daily rainfall correlation is 0.03-0, 37. WMO analysis evaluation resulted in 7 rain stations that met the standard for the area of ​​influence of 1,000–2,500 km2/station. The calculation of the Kagan-Rodda method is carried out in 2 scenarios of smoothing error, scenario I with an alignment error (Z1) of 4.93% resulting in 37 rain stations, the area of ​​influence of Thiessen is 273.89 km2–1197.80 km2 (0.01-0.05) , the value of r(0) is 0.20, the distance between rain stations is 26.36 km, and 2 stations meet the WMO standard. While scenario II with Z1 of 9.72% produces 10 rain stations, which maintains 2 stations, moves 8 stations and closes 3 stations, the Thiessen influence area is 1,691.71 km2–2,488.21 km2 (0.08-0.11), the distance between rain stations is 50.70 km, and all stations meet WMO standards. The rationalization of the Kagan-Rodda method in scenario II is relatively representative of the area of ​​influence compared to scenario I.
Co-Authors Aisah kurnia utami Alfian Alfian Alfian Alfian Alfianis Alfianis Aminaton Marto Aminuyati Andy Hendri, MT, Andy Anggraini Lenry Rahman Annisa Destiany Aqilla Aqilla Aqilla, Aqilla Aras Mulyadi Arbaini Ardi Wahyudi Ardiminsyah Ardiminsyah Ari Sandhyavitri Ari Sandhyavitri Ary Sandhyavitri Asda Usradinda Astari, Kemala Fitri Aswal Fitra Yadi Bambang Siswanto Bambang Sudjatmoko Bambang Sujatmoko Binhar, Mathrab Bochari - Bunga Rabby Zalfi Bunga Rafikah Zaki Cahyono, Sandi Citra Perdana Cuprtino Tamba Darmawan, Igeny Dwiana Deddy Prasetyo Utomo Dehas Abdaa Dent Siloana Dickky Yusman Dwi Puspo Handoyo Dwi Puspo Handoyo, Dwi Puspo Edwar AR Effendi Sianipar Ega Riana Tovani Eki Efrizal, Eki Ela Fitriana Ela Fitriana Elsa Rina S Ermiyati Ermiyati Ermiyati Ermiyati Ermiyati, Ermiyati Erza Ismi Lariza Fachrunnisa Fakhri Fakhri Fakhri, Fakhri Fardian, Herry Farizki Afdalindra Ihsan Fatiha Nadia Fatiha Nadia, Fatiha Fauzan Mahdinal Ferry Fatnanta Fitri Landari Fitri Yuniar Handayani Ghiffa Syauqiyya Harahap Habrio Ilva YR Hafid Muhaimin Hasward Harahap, Ghiffa Syauqiyya Hardiman Hardiman Haryo Dipa Hasward, Hafid Muhaimin Hendra Muchlis Hendra Muchlis Herry Fardian Husaini, Rizki Ramadhan Husnah Husnah Imam Suprayogi Indra Kuswoyo Insan Ikhsan Isnandi, Ari Jusatria Keisuke Murakami Khairul Rizal Kiky Yahdita Lita Darmayanti Lovina, Fitri Luluk Masfufa M Ramadani M. Rizki E. Janrosl Maijoni, Tri Mailino, Vemby Malik Habibillah Mardan Fajri Mardani Sebayang Marganda Simamora Mariani Damanik Marisya Wahyuna Marta Yudha Ozman Mashuri Mathrab Binhar Matrab Binhar Mega Putri Komalasari Mifta Khairiah Mintio, Reygi Raica Mohd Syarwan Mualifudin, Achmad Muhammad Ikhsan Muhammad Shalahuddin Muhammad Wildan Pahlevi Muhammad Yusa Muhardi Nafisah Nafisah Nahar Afrizal Nessa Riana Putri, Nessa Riana Niko Erdi Putra Novan, Andre Nurdin Nurdin Nurdin Nurdin Nurhasanah Junia Nurhasanah Nurhasanah Raeni Evanta Br. Tarigan Rafit Mahendra Rahayu, Indah Tri Rahman Wahidin Miatullah Ramadhani Harahap Randhi Saily Rellyadi Saputra Laset Resty Agesti Handayani Resty Agesti Handayani Revi Lasmita Rianty Sihaloho Riau Satrya Alamsyah Ricca, Randi Rangkuti Putra Rico Ardiansyah Amri Rifardi Rinaldi Rinaldi Rinaldi Rinaldi Ririn Rindayani Rizal, Khairul Rizki Rianda Putra Rizky Eka Putra Rizky Eka Putra, Rizky Eka Rosmiati Ahmad Rumambi, Ridho S Siswanto S.Pd. M Kes I Ketut Sudiana . Sadewa Sabihi Safari Tri Septanto Salvi Novita Sandi Cahyono Sharie, Barcha Yolandha Sigit Sitikno, Sigit SIGIT SUTOKNO Siswanto - Siswanto, Siswanto Soewignjo Agus Nugroho Soewignjo Agus Nugroho Sovia Revina Sudarmanto Sudarmanto Sudjatmoko, Bambang Suprasman Suprasman Sutikno, Sigit SUTOKNO, SIGIT Swary Aristi Syarifah Sophia Vinka Zafani Tampubolon, Hotmauli Thessalonika Thessalonika Thessalonika, Thessalonika Tiurma Monalisa Siahaan Tri Maijoni Trimaijon Trimaijon Trimaijon, Trimaijon Verawati Wahyuna, Marisya Wibowo Suarno Putra Widya Safitri Wiliya, Wiliya Yenita Morena Yohanna Lilis H Yulasni Astri Yuli Hendra Yundari, Yundari Zaky Ilhami Zulkarnain Zulkarnain Zulkarnain Zulkarnain ZULKIFLI ZULKIFLI