Hubungan Antara Luas Daerah Tangkapan Terhadap Angka Koreksi Hidrograf Satuan Sintetik Gama 1 : The Relationship Between Catchment Area Size And The Gamma 1 Synthetic Unit Hydrograph Correction Factor

Titiek Widyasari; Nizar Achmad; Tania Edna Bhakty; Felicita Erma Gista

Authors

Titiek Widyasari Universitas Janabadra Yogyakarta
Nizar Achmad Universitas Janabadra
Tania Edna Bhakty Universitas Janabadra
Felicita Erma Gista Universitas Janabadra

Keywords:

banjir rancangan, hidrograf satuan sintetik, HSS Gama 1, hidrograf satuan

Abstract

The principle of the unit hydrograph (HS) method is the direct runoff hydrograph due to effective rainfall, which remains at 1 mm/hour and is uniform across the entire catchment or river basin area, thus requiring verification for the use of the HS method and examining the relationship between catchment area and correction factor. This research uses the HSS Gama 1. The parameters investigated for HSS Gamma 1 are parameters in four catchment areas in Yogyakarta, namely DAS Progo, Sub-DAS Winongo, Sub-DAS Code, and Sub-DAS Ngrancah. The results of this study indicate that the larger the catchment area, the smaller the thickness of rainfall on HSS Gama 1. If the thickness of rainfall is less than 1 mm/hour, then hydrograph the HSS Gama 1 of correction below hydrograph the HSS Gama 1 of initial. There is a correlation between the catchment area and the correction factor, meaning that the larger the catchment area, the greater the correction factor in the HSS Gama 1 method with the logarithmic regression method and a correlation coefficient of 0.9958.

Downloads

Download data is not yet available.

References

Alhakim, E.E., Wicaksono, A.B. and Iswanto, E.R., 2019. Perbandingan Hidrograf Satuan Sub-DAS Cisadane untuk Analisis Banjir Tapak RDNK Serpong. Jurnal Pengembangan Energi Nuklir , [online] 21(2). Available at: <http://jurnal.batan.go.id/index.php/jpen/article/view/5671>.

Enung, E., 2016. Perancangan Program Aplikasi Hidrograf Satuan Sintetis (HSS) dengan Metode Gama 1, Nakayasu, dan HSS ITB 1. Potensi: Jurnal Sipil Politeknik , [online] 18(1), pp.8–20. Available at: <https://jurnal.polban.ac.id/potensi/article/view/520>.

Ginting, S. and Utaminingsih, W., 2020. Pengembangan Model Hidrograf Satuan Sintetis (HSS) DPMA-IOH dan Penerapannya pada Daerah Aliran Sungai. Jurnal Teknik Sipil, Vol 27, Iss 1, Pp 79-94 (2020). [online] https://doi.org/10.5614/jts.2020.27.1.9.

Gustoro, D., Sujono, J. and Karlina, K., 2022. Perbandingan Pola Distribusi Hujan Terukur dan Hujan Satelit PERSIANN di DAS Progo. Jurnal Teknik Pengairan: Journal of Water Resources Engineering; Vol. 13 No. 1 (2022); 23-35 ; 2477-6068 ; 2086-1761 ; 10.21776/ub.pengairan.2022.013.01. [online] Available at: <https://jurnalpengairan.ub.ac.id/index.php/jtp/article/view/601>.

Harahap, R., Jeumpa, K. and Mulyana, R., 2023. Evaluasi Banjir Rancangan DAS Deli dengan Metode HSS Gama 1 dan HSS SCS. In: Prosiding Seminar Nasional Teknik UISU (SEMNASTEK). [online] Medan: SEMNASTEK UISU. pp.121–124. Available at: <https://jurnal.uisu.ac.id/index.php/semnastek/article/view/7260>.

Harto, S., 2000. Hidrologi (Teori - Masalah - Penyelesaian). 1st ed. Yogyakarta: Nafiri Offset.

Ikhsan, J. and Anjasmara, K.B., 2019. Kajian Infrastruktur dan Sempadan Sungai pada Wilayah Rawan Banjir Lahar di Sungai Progo Hilir. Jurnal Teknik Sipil UAJY, [online] 15(2), pp.74–85. Available at: <https://ojs.uajy.ac.id/index.php/jts/article/view/3715>.

Irawan, P., Komala Sari, N., Kurnia Hidayat, A. and Nursani, R., 2020. Bandingan HSS Snyder-Alexeyev, Nakayasu dan Gamma 1 pada Analisis Banjir Sub DAS Ciliung untuk Perencanaan Bangunan Air. Jurnal Siliwangi Seri Sains dan Teknologi Universitas Siliwangi Tasikmalaya Jawa Barat, 6(1), pp.1–11.

Kasim, T.W., 2019. Analisis Debit Banjir Sungai Melupo dengan Metode HSS Gama 1. RADIAL: Jurnal Peradaban Sains, Rekayasa dan Teknologi, [online] 7(2), pp.172–180. https://doi.org/https://doi.org/10.37971/radial.v7i2.192.

Marhendi, T. and Fathurohman, 2020. Analysis of Flood Discharges of Serayu River at Serayu Barrage using HSS Gama I and Nakayasu Models. IOP Conference Series: Materials Science and Engineering , [online] 771(1), pp.12–44. https://doi.org/10.1088/1757-899x/771/1/012044.

Natakusumah, D.K., Hatmoko, W. and Harlan, D., 2011. Prosedur Umum Perhitungan Hidrograf Satuan Sintetis dengan Cara ITB dan Beberapa Contoh Penerapannya. Jurnal Teknik Sipil, [online] 18(3), pp.251–291. https://doi.org/https://doi.org/10.5614/jts.2011.18.3.6.

Sasmito, S., Triatmodjo, B., Sujono, J. and Harto, B., 2015. Pengaruh Kondisi Awal Kelengasan Tanah Terhadap Dedit Puncak Hidrograf Satuan. Jurnal Teknik Sipil UAJY, [online] 13(3), pp.228–239. https://doi.org/https://dx.doi.org/10.24002/jts.v13i3.879.

Suryantara SP, I.P.T.G., 2013. Analisis Debit Banjir dengan Menggunakan Hidrograf Satuan Terukur pada Daerah Aliran Sungai Progo Bagian Hulu. Jurnal Ilmiah Teknik Sipil; Jurnal Ilmiah Teknik Sipil, [online] 17(2), pp.179–183. Available at: <https://ojs.unud.ac.id/index.php/jits/article/view/23898>.

Syamsuddin, A.P., Musa, R. and Ashad, H., 2022. Kajian Pengaruh Parameter Hidrograf Satuan Sintetik Berdasarkan Karakteristik Daerah Aliran Sungai. Jurnal Teknik Sipil MACCA, [online] 7(1), pp.50–56. Available at: <https://download.garuda.kemdikbud.go.id/article.php?article=3518403&val=28449&title=Kajian%20Pengaruh%20Parameter%20Hidrograf%20Satuan%20Sintetik%20Berdasarkan%20Karakteristik%20Daerah%20Aliran%20Sungai> [Accessed 20 February 2024].

Triatmodjo, B., 2014. Hidrologi Terapan. Yogyakarta: Beta Offset.

Widyasari, T., 2023. Hidrologi: Edisi Banjir Rancangan. [online] Eureka Media Aksara. Eureka Media Aksara. Available at: <https://repository.penerbiteureka.com/publications/565032/hidrologi-edisi-banjir-rancangan#cite> [Accessed 6 February 2024].

Widyasari, T. and Achmad, N., 2016. Maps Flood Forecast The Code River in Yogyakarta. In: Proccedings International Seminar on ''Water Resilience in a Changing World" The 5th HATHI International Seminar Denpasar Bali . [online] Bali: Himpunan Ahli Teknik Hidraulik Indonesia (HATHI) - Indonesian Association of Hydraulic Engineers. pp.236–245. Available at: <https://repositori.janabadra.ac.id/js/pdfjs/web/viewer.html?file=../../../repository//2016_HATHI-Juli-30032023-021.pdf> [Accessed 19 February 2024].