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All Journal MEDIA KOMUNIKASI TEKNIK SIPIL Jurnal Ilmu Dasar BERKALA SAINSTEK Jurnal Teknik Sipil Jurnal Teknik Sipil dan Perencanaan Jurnal Teknik Pengairan: Journal of Water Resources Engineering Rekayasa Sipil Semesta Teknika Jurnal Rekayasa Sipil dan Lingkungan Journal of Applied Geospatial Information Teras Jurnal U Karst Jurnal Rekayasa Sipil Jurnal Riset Rekayasa Sipil Jurnal Teknika Journal of the Civil Engineering Forum Jurnal Teknik Sumber Daya Air PEKAT : Jurnal Pengabdian Kepada Masyarakat Geosfera Indonesia
Gusfan Halik
Master Program In Civil Engineering, Department Of Civil Engineering, Faculty Of Engineering, University Of Jember, Jl. Kalimantan No. 37 Jember, 68121, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Mathematics Physics Public Health Social Sciences Transportation Other

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Flash Flood Susceptibility Mapping at Andungbiru Watershed, East Java Using AHP-Information Weighted Method Devi Ratna Handini; Entin Hidayah; Gusfan Halik
Geosfera Indonesia Vol. 6 No. 2 (2021): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v6i2.24173

Abstract

Flash floods are among the most frequent natural disasters caused by heavy rain associated with a severe thunderstorm, which leads to social and economic losses in infrastructure and agriculture. Therefore, this research aims to map flash flood potential susceptibility (FFPS) in the Pekalen watershed, using Geographic Information System (GIS) technology and statistical analysis to reduce the risk of flooding. The opinion and experience of an expert on the weight assessment method were carried out using the Analytical Hierarchy Process (AHP). Furthermore, the probability statistical methods and GIS were used in flash flood areas in the Pekalen watershed in Andungbiru, Probolinggo village. This study was carried out using geomorphological factors, namely elevation, slope, stream power index, and topographic wetness index, with a resolution of 30 m. Thematic map scale of the land use, river density, distance to the river, rainfall, and geology is in the ratio of is in a ratio of 1:25.000. Imagery processing was carried out using Landsat 8 30 m x 30 m resolution imagery, such as the Normalized Difference Vegetation Index. The result showed that the model map of FFPS obtained low 8%, low 23%, moderate 27%, moderate to high 26%, high 13%, and very high 2% index values. The next stage of modeling analysis led to validation using statistic receiver operating Characteristic Curve (ROC) of area Under Curve (AUC) with a value of 90.15. In conclusion, the factors that significantly trigger flash floods are distance to the river, land use, and slope. Keywords: AHP-weighted; information content; FFSP; GIS; Geomorphology Copyright (c) 2021 Geosfera Indonesia and Department of Geography Education, University of Jember This work is licensed under a Creative Commons Attribution-Share A like 4.0 International License
Rain Station Network Analysis in the Sampean Watershed: Comparison of Variations in Data Aggregation Entin Hidayah; Gusfan Halik; Minarni Nur Trilita
Geosfera Indonesia Vol. 7 No. 1 (2022): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v7i1.29160

Abstract

The lack of rainfall-runoff accuracy is important for some applications. The choice of data aggregation that affects the estimation results is important at the level of accuracy. Some commonly used aggregations are daily, ten days, and monthly rainfall. This study aimed to compare the results of the estimation of the effect of data aggregation and to analyze the density of the rain gauge network in the Sampean watershed. The evaluation of the rain station network is carried out through the Kagan calculation. Rainfall data are from the rainfall data records for 20 years at 33 rain gauge stations. Measurement of the performance of aggregation variations using the relationship between the correlation value of rainfall with the distance between station locations. Station network positioning is assessed from alignment errors and interpolation errors. The results showed differences in the correlation and estimation values ​​in the variation of data aggregation.The greater interval can increase the effectiveness of deployment with minimum error. Based on Kagan's analysis, there is an uneven distribution of gauge stations in the Sampean watershed eventhough the average and interpolation error in the monthly rainfall is less than 5%. It is this inequality that causes gauge stations to be inefficient. Keywords : Rain gauge network; correlation; Kagan; data aggregation Copyright (c) 2022 Geosfera Indonesia and Department of Geography Education, University of Jember This work is licensed under a Creative Commons Attribution-Share A like 4.0 International License
Exploring Hydraulic Behavior of Weir Using HEC-RAS at Semangir River Jember Regency Retnaningtias, Sefti Aryani; Hidayah, Entin; Halik, Gusfan
Journal of the Civil Engineering Forum Vol. 11 No. 2 (May 2025)
Publisher : Department of Civil and Environmental Engineering, Faculty of Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jcef.14395

Abstract

Flooding significantly impacts communities living along riverbanks, causing severe damage to infrastructure and properties. The flood event on January 9, 2022, in Bumi Mangli Permai and Mangli Residence Housing, heavily damaged access roads. Effective flood control is essential to mitigate these risks, and one viable solution is the implementation of long storage systems, particularly motion weirs. This study explores the hydraulic behavior of the Semangir River in Jember Regency using the HEC-RAS program to model both fixed and motion weirs. Utilizing the SUH Nakayasu method, peak discharges for 25-year, 50-year, and 100-year return periods were estimated. The analysis revealed that the existing weir's design is inadequate for the 50-year return period. However, simulations indicate that a motion weir with gate dimensions of 1.5 m x 1.75 m offers improved hydraulic conditions, reducing water surface elevation and flow velocity compared to both the existing and initially planned weirs. These findings support the adoption of motion weirs as an effective flood control strategy for the Semangir River.
Model Prediksi Ketersediaan Air Menggunakan Data Sirkulasi Atmosfer Halik, Gusfan; Wahyuni, Sri; Yunarni, Wiwik; Bukhori, Saiful
Jurnal Teknik Sumber Daya Air Vol. 3 No. 2 (Desember 2023)
Publisher : Himpunan Ahli Teknik Hidraulik Indonesia (HATHI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56860/jtsda.v3i2.49

Abstract

Perubahahan iklim global telah memberikan pengaruh terhadap perubahan pola curah hujan sehingga berdampak pada ketersediaan air. Disamping itu, kondisi fenomena iklim lokal seperti ENSO juga memberikan pengaruh terhadap perubahan pola hujan dan ketersediaan air. Saat ini, prediksi hujan dan ketersediaan air sangat sulit dilakukan karena terjadinya perubahan iklim dan adanya ketidakpastian fenomena iklim lokal. Penelitian ini bertujuan untuk memodelkan ketersediaan air di DAS Sampean Baru Kabupaten Bondowoso menggunakan data sirkulasi atmosfer secara langsung. Model prediksi ketersediaan air diusulkan menggunakan model hybrid berbasis kecerdasan buatan, yaitu : Wavelet Neural Networks (WNN). Model WNN menggabungkan fitur ekstraksi dengan transformasi wavelet dan fungsi transfer non linier Artificial Neural Networks. Hasil penelitian menunjukkan bahwa pola ketersediaan air antara luaran WNN dengan pola ketersediaan air observasi mempunyai kesesuaian pola yang sama.  Namun demikian, luaran WNN belum mampu memprediksi debit aliran tinggi atau debit puncak dengan baik. Oleh karena itu, model WNN ini hanya direkomendasikan untuk memprediksi debit operasional atau debit andalan bulanan. Berdasarkan hasil penelitian ini, model prediksi ketersediaan air dengan WNN dapat dimanfaatkan oleh instansi terkait/stakeholder sebagai alternatif dasar pertimbangan dalam merancang strategi alokasi air.
Assesmen Kelangkaan Air di DAS Semajid Kabupaten Pamekasan Priyanto, Agil; Halik, Gusfan; Wiyono, Retno Utami Agung
Jurnal Teknika Vol 17 No 2 (2025): SEPTEMBER
Publisher : Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/jt.v17i2.1375

Abstract

Penelitian ini bertujuan melakukan asesmen kelangkaan air menggunakan indek kelangkaan air Water Scarcity Indek (WSI) dan kelangkaan air irigasi faktor K.  Penelitian ini mengintegrasikan indeks kelangkaan air (WSI), kekeringan irigasi faktor K dengan indek keparahan kekeringan meteorologis standardized precipitation index (SPI), sehingga diperoleh tren kelangkaan air sebagai dasar penetuan strategi mitigasi. Dalam penelitian ini menggunakan data 6 pos hujan, data debit AWLR sungai Semajid, data debit intake bendung Samiran dan data penduduk tahun 1994-2023. Hasil penelitian menunjukkan bahwa indek kekeringan SPI-6 paling mendekati kondisi lapangan dengan nilai SPI terendah -3,55 pada Juni 2018. Hasil penilaian kelangkaan air metode WSI dan faktor K menunjukkan nilai indek yang bervariasai dari sangat kering sampai dengan kering ekstrim.  Indek kelangkaan air WSI dan faktor K menunjukan pola terbalik, nilai WSI lebih dari 0,4 terjadi pada bulan Juni sampai November dan nilai faktor K kurang dari 0,5 terjadi pada bulan Juni sampai November. Hal ini menunjukan terjadi kelangkaan air pada bulan-bulan tersebut. Nilai Indek SPI, WSI dan kelangkaan air faktor K menunjukan kekeringan ekstrim terjadi pada tahun 1996, 1997, 2002, 2015, 2018 dan 2019. Strategi mitigasi diperlukan dengan memanfaatkan teknologi low impact development.
THE PLANNING OF ARTIFICIAL RECHARGED WELLS AT PURI BUNGA NIRWANA, BUKIT PERMAI, AND GUNUNG BATU HOUSINGS AT JEMBER: Perencanaan Sumur Resapan di Kawasan Perumahan Puri Bunga Nirwana, Perumahan Bukit Permai, dan Perumahan Gunung Batu Wahyuni, Sri; Halik, Gusfan; Wulandari, Wahyu Sri
Jurnal Rekayasa Sipil dan Lingkungan Vol. 2 No. 02 (2018): JURNAL REKAYASA SIPIL DAN LINGKUNGAN
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (785.489 KB) | DOI: 10.19184/jrsl.v2i02.6896

Abstract

Puri Bunga Nirwana, Bukit Permai, and Gunung Batu Housings are some of the housings that exist in Sumbersari subdistrict. These housings are the third former residential land that was initially able to rainwater seeped into the land of the free but is now covered by housing buildings. The effect of this case is the water cannot go into the land directly but the weather even in times of flooding rains. Therefore, to overcome this problem, it is necessary to do a study and planning of artificially recharged wells in the area. From the result of research with the basic circle and square pad at Puri Bunga Nirwana Housings for the types of houses with an area of 72 m2, 84 m2, and 105 m2 were made artificial recharged wells with a diameter of 1 m and a depth of 2 m. While at Bukit Permai and Gunung Batu Housings for the types of houses with an area of 75 m2, 90 m2, 101 m2, and 202 m2 were made artificial recharged wells with a diameter of 1 m and a depth of 2 m. And the useful cross-section used on each housing is the square cross-section. Perumahan Puri Bunga Nirwana, Perumahan Bukit Permai dan Perumahan Gunung Batu merupakan beberapa perumahan yang ada di Kecamatan Sumbersari. Ketiga perumahan ini dahulunya merupakan lahan yang awalnya mampu meresap air hujan ke dalam tanah secara bebas akan tetapi kini tertutup oleh bangunan-bangunan perumahan. Hal ini menyebabkan air tidak dapat langsung masuk ke dalam tanah tetapi menggenang bahkan banjir di saat hujan turun. Oleh karena itu, untuk mengatasi permasalahan ini perlu dilakukan perencanaan sumur resapan di daerah tersebut. Dari hasil penelitian dengan penampang lingkaran dan penampang persegi pada Perumahan Puri Bunga Nirwana untuk tipe rumah dengan luas 72 m2, 84 m2, dan 105 m2 dibuat sumur resapan dengan diameter 1,0 m dan kedalaman 2,0 m. Pada Perumahan Bukit Permai dan Perumahan Gunung Batu untuk tipe rumah dengan luas 75 m2, 90 m2, 101 m2 dan 202 m2 dibuat sumur resapan dengan diameter 1,0 m dan kedalaman 2,0 m.dari hasil perhitungan diketahui bahwa penampang yang efektif digunakan pada masing-masing perumahan adalah penampang persegi.
PEAK DISCHARGE ESTIMATION OF WELANG WATERSHED IN PASURUAN REGENCY: Estimasi Debit Puncak DAS Welang Di Kabupaten Pasuruan Febriyanto, Andreyan; Hidayah, Entin; Halik, Gusfan
Jurnal Rekayasa Sipil dan Lingkungan Vol. 2 No. 02 (2018): JURNAL REKAYASA SIPIL DAN LINGKUNGAN
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (698.322 KB) | DOI: 10.19184/jrsl.v2i02.6906

Abstract

Peak runoff has an important role in flood control.In flood control, the data of peak runoff is needed to anticipate the flood and rain fall modeling estimation is required with the help of HEC-HMS Software. From modeling result on February 3, 2007 researcher got calibration value of simulation of peak discharge 17,9 and peak discharge observation is 16,7 with a value of effectiveness (Nash) of 0.873. Model validation test on 9,10 February and 7 March 2007 resulted in value (Nash) of 0.826, 0.742 and 0.656. Debit puncak mempunyai peranan penting dalam pengendalian banjir. Dalam pengendalian banjir, data dari limpasan hujan dibutuhkan untuk mengantisipasi banjir dan pemodelan estimasi curah hujan dibutuhkan dengan adanya bantuan dari Software HEC-HMS. Hasil pemodelan pada tanggal 3 Februari 2007 didapat nilai kalibrasi simulasi debit puncak sebesar 17,9 m³/s dan observasi debit puncak sebesar 16,7 m³/s dengan nilai efektifitas (Nash) sebesar 0,873. Uji validasi model pada tanggal 9,10 Februari dan 7 Maret 2007 menghasilkan nilai (Nash) sebesar 0,826, 0,742 dan 0,656.
Geolistrik Konfigurasi Wenner Untuk Pendugaan Air Tanah di Perumahan Grand Puri Bunga Nirwana Jember Kusworowati, Eri; Halik, Gusfan; Widiarti, Wiwik Yunarni
Teras Jurnal : Jurnal Teknik Sipil Vol. 10 No. 1 (2020): Volume 10 Nomor 1
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (919.084 KB) | DOI: 10.29103/tj.v10i1.245

Abstract

Abstrak Air merupakan kebutuhan pokok bagi manusia. Air tanah salah satu alternatif sebagai sumber air bersih. Penelitian ini bertujuan untuk menyelidiki potensi air tanah di Perumahan Grand Puri Bunga Nirwana, Jember. Penelitian menggunakan metode geolistrik dengan konfigurasi wenner. Panjang lintasan akuisisi data 410 meter. Jarak spasi antar elektroda (a) yang digunakan yaitu 5 m, 10 m dan 15 m. Pengulangan data (n) dilakukan sebanyak 6 kali pada masing-masing jarak spasi antar elektroda. Inversi model menggunakan software Res2Dinv. Hasil inversi berupa citra penampang lapisan bawah tanah. Nilai resistivitas yang diperoleh 0,55-371 „¦m. Potensi air tanah berada di kedalaman 38-51,8 m. Akuisisi data terletak pada koordinat 8º10,2940 S dan 113º447,20 E. Lapisan akuifer tergolong akuifer produktif sedang. Debit akuifer diprediksi kurang dari 5 liter/detik. Kata kunci: geolistrik, wenner, resistivitas, akuifer Abstract Water is a primary human need. Groundwater is an alternative source of fresh water. This research aims to investigate the potential of groundwater at the Grand Puri Bunga Nirwana Housing, Jember. The study used the geoelectric method with a Wenner configuration. The acquisition data length is 410 meters. The distance between the electrodes used 5 m, 10 m and 15 m. Repeating data 6 times at each spacing between electrodes. Inversion of the model using Res2Dinv software. The inversion results in the form of a cross-sectional image of the underground layer. The resistivity value obtained 0.55-371 Ωm. The depthof groundwater potential is 38-51.8 m. Coordinates of data acquisition are 8º10.29'40 'S and 113º44'7.20' 'E. Aquifer layers are classified as medium productive aquifers. The predicted discharge of aquifer is less than 5 liters/second. Keywords: geoelectric, wenner, resistivity, aquifer
ANALISIS KEKERINGAN METEOROLOGI MENGGUNAKAN METODE STANDARDIZED PRECIPTATION INDEX (SPI) DI DAS BEDADUNG KABUPATEN JEMBER Malini, Citra; Halik, Gusfan; Agung Wiyono, Retno Utami
Teras Jurnal : Jurnal Teknik Sipil Vol. 11 No. 2 (2021): Volume 11 Nomor 2, September 2021
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v11i2.483

Abstract

Abstrak Bencana kekeringan di DAS Bedadung terindikasi dengan tidak terpenuhinya kebutuhan masyarakat akan pasokan air. Kekurangan air akibat defisit curah hujan menjadi indikator kekeringan meteorologi. Penelitian ini bertujuan untuk mendapatkan nilai indeks kekeringan di DAS Bedadung kabupaten Jember. Metode Standardized Precipitation Index (SPI) digunakan untuk mendapatkan tingkat kekeringan. Tingkat kekeringan meteorologi yang dihitung tergantung jumlah curah hujan yang terukur pada alat penakar di stasiun. Hasil penelitian ini menunjukkan bahwa indeks kekeringan ekstrim terjadi pada tahun 2018 dan 2019. Nilai indeks kekeringan (SPI-6) memiliki nilai tertinggi sebesar -2,69 di stasiun Ajung dan nilai     -1,13 di stasiun Kottok. Hasil pemetaan sebaran indeks kekeringan memiliki kesesuaian dengan kondisi kekeringan observasi. Hal ini ditunjukkan dari nilai validasi sebaran kekeringan antara SPI-6 dan data kekeringan observasi dengan tingkat keandalan sebesar 82%. Kata kunci: DAS Bedadung, bencana kekeringan, indeks kekeringan meteorologi, SPI   Abstract Drought disaster in the Bedadung watershed is indicated by the unfulfilled sociaty needs for water supply. Lack of water due to deficit in rainfall is an indicator of meteorological drought. This study aims to obtain the drought index value in the Bedadung watershed, Jember district. The Standardized Precipitation Index (SPI) method is used to obtain the drought saverity index. The meteorological drought index depends on the amount of rainfall observed on the rainfall gauge stations. The results of this study indicated that extreme drought index occurred in 2019. The drought index value (SPI-6) had the highest value of -2.69 at the Ajung station and a value of   -1.13 at the Kottok station. The results of the mapping of the distribution of the drought index are suitable with drought existing conditions. This is indicated by the validation value of the drought distribution between SPI-6 and the observed drought data with a reliability level of 82%. Keywords: Bedadung watershed, drought disaster, meteorological drought index, SPI
Tsunami Simulation in Paseban Beach Using Nesting Method on Delft3D Modeling Faradella, Maulida; Wiyono, Retno Utami Agung; Halik, Gusfan
Rekayasa Sipil Vol. 18 No. 1 (2024): Rekayasa Sipil Vol. 18 No. 1
Publisher : Department of Civil Engineering, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2024.018.01.8

Abstract

Paseban Beach is an area that has the potential for a tsunami hazard. In analyzing the tsunami hazard, accurate data and methods are essential. Therefore, this study aims to conduct a tsunami hazard analysis using the nesting method to obtain precise modeling results. This study utilizes the Delftdashboard and Delft3D-Flow programs. The modeling of the 1994 Banyuwangi tsunami results show that the validation stage has an accuracy of 7.94%, which means it is very accurate. The tsunami modeling using the 8.7 Mw megathrust earthquake showed the tsunami wave height in Paseban Beach reached 10,25 meters with 46 minutes arrival time. The length of the tsunami inundation was measured to be 2.96 km, with a run-up height of 2.98 meters.
Co-Authors Adden Ramadhan Syarif Ardi Agil Priyanto Ainunisa, Diah Angel Novita Tri lara Atica Cahyani, Hajar Crisia Dewi, Pratita Dian Wahyu Khaulan Dyah Ayu Intanasya Putri Entin Hidayah Faillasuf, Vide Mirza Faradella, Maulida Febriyanto, Andreyan Hajar Crisia Cahyani Handini, Devi Ratna Hery Budi Sulaksono Joice Prasasty September Kusworowati, Eri Malini, Citra Narulita, Norma Aulia Nurul Priyantari Prabowo Prabowo Prakoso, Tara Adi Pratama, Munawir Pratita Dewi Prihantono, Gunawan Eko Putra, Victorius Setiaji Putri, Dyah Ayu Intanasya Qatrinnada, Winona Fritzie Putri Radiah Ulil Absari Ratih, Masita Retnaningtias, Sefti Aryani Retno Utami Agung Wiyono Rizky Akbar Irhamullah Tunggal Saiful Bukhori Saifurridzal, Saifurridzal Silmi Kaaffah, Abdillah Tirta Sri Wahyuni Supeno Supeno Taqiudin Haq Tedy Pranadiarso Usaamah Hadi Windy Bana Alam Perkasa Wiwik Yunarni Wiwik Yunarni Widiarti Wulandari, Wahyu Sri Yuli Mariati Yunarni, Wiwik