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All Journal Maspari Journal IPTEK The Journal for Technology and Science BERKALA SAINSTEK KERN Jurnal Teknik Pengairan: Journal of Water Resources Engineering Rekayasa Sipil Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Forum Geografi Jurnal Teknik Sipil Jurnal Rekayasa Sipil dan Lingkungan Teras Jurnal U Karst Jurnal Aplikasi Teknik Sipil Jurnal Rekayasa Sipil Journal of the Civil Engineering Forum PEKAT : Jurnal Pengabdian Kepada Masyarakat Geosfera Indonesia
Entin Hidayah
Department Of Civil Engineering, Faculty Of Engineering, University Of Jember, Kalimantan St. Number 37, Jember, East Java, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Immunology & microbiology Mathematics Physics Public Health Social Sciences Transportation Other

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Uji Keandalan Penguraian Data Hujan Penguraian (Disagregasi) Untuk Pemodelan Hidrograf Banjir Di Das Kelapa Sawit Hidayah, Entin
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol 3, No 2 (2012)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (233.842 KB)

Abstract

Abstract: This study explores accuracy of short term rainfall disaggregation model by modeling rainfall runoff. Storm hydrographs show rapid responses to rainfall with a short time to peak. The spatial rainfall disaggregation process used multivariate daily rainfall (MuDRain) model on 4 manual rainfall rain gauges (MRR) and 3 automatic rainfall rain gauges (ARR) used as reference the hydrographs were satisfactorily modeled using the Hydrologic Engineering Centre–Hydrologic Modeling System (HEC-HMS). Parameter calibrations were done on case 1 that rainfall runoff modeling used the rainfall data from 7 rain gauges (MRR and ARR). Model validation (case 2) used the rainfall data from 3 rain gauges (ARR). The efficiency indexes of (case 1) and (case 2) are 0.97 and 0.74, respectively. Based on these preliminary findings, it could be suggested that rainfall disaggregation would be able to serve reasonably well in regulating basic hydrological functions.Key words: rainfall, runoff, disaggregation, MuDRain
KARAKTERISTIK ALIRAN ANAK SUNGAI KETANDAN, DAS BEDADUNG Hidayah, Entin; Yunarni, Wiwik; Ratnaningsih, Anik
Kern : Jurnal Ilmiah Teknik Sipil Vol 3, No 2 (2013): Jurnal Ilmiah Teknik Sipil KERN
Publisher : Kern : Jurnal Ilmiah Teknik Sipil

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Abstract

Rezim  aliran sangat penting dalam mempertahankan integritas sistem ekologi sungai. Kajian ini bertujuan untuk mengkarakterisasi antara debit dan rejim hidrolika pada anak sungai Ketandan memberikan kontribusi pemahaman hidrolik saluran. Pendekatan yang digunakan dalam kajian ini adalah (1) menentukan parameter kekasaran manning sebagai kontrol terhadap debit hasil pengukuran, (2)  melakukan simulasi debit sebagai input pada sungai Ketandan untuk meninjau kondisi  rejim aliran yang terjadi. Proses perhitungan ini menggunakan alat bantu HEC-RAS dengan asumsi alirannya steady. Hasil kajian menunjukan bahwa nilai kekasaran manning yang sesuai sebesar 0,045. Kondisi aliran kritis terjadi di kemiringan saluran yang curam untuk debit banjir yang kecil,selain itu terjadi di hulu dan hilir bendung. Banjir terjadi pada penampang melintang sungai mulai dengan debit banjir rencana periode ulang  2 tahunan.Kata Kunci : rejim hidrologi, rejim aliran, karakteristik, sungai.
Preliminary Assessment of Morphometric and Hydrological Properties of Six Watersheds in the Eastern Part of East Java Indarto, Indarto; Hidayah, Entin
Forum Geografi Vol 33, No 1 (2019): July 2019
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v33i1.7858

Abstract

A hydrological process on the watersheds is driven by rainfall as the input. Physical properties  also affect the magnitude response of the watershed to produce run-off. This paper presents the identification, assessment and visualisation of morphometric and hydrological properties of the watersheds.  Six watersheds in the eastern part of East Java were used for the analysis.  Physical characteristics obtained by cropping the GIS layer with a watershed. Topographic and morphometric properties of the watersheds derived from the ASTER G-DEM2. Furthermore, hydrological properties are derived statistically by analysing available rainfall and discharge data. Hydrological data (rainfall and discharge) are available from 1996 ? 2014.  Finally, simple statistical analysis by plotting obtained values are used to interpret the relation between morphometric and hydrological properties of the watersheds. The results show the quantitative number (unit) to describe the morphometric and hydrological properties of the six watersheds that can be used for watershed classification.
Evaluating Error of Temporal Disaggregation from Daily into Hourly Rainfall using Heytos Model at Sampean Catchments Area Hidayah, Entin; Anwar, Nadjadji; Edijatno, Edijatno; Iriawan, Nur
IPTEK The Journal for Technology and Science Vol 21, No 1 (2010)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v21i1.25

Abstract

Developing a rainfall-runoff model sufficient to flood prediction hourly rainfall data. Lack of automatic rain gauge for high resolution rainfall in catchment area can be an obstacle for the modeling. Otherwise, the manual rain gauges may spread on all of catchments areas, providing daily rainfall. Daily rainfall disaggregation to hourly rainfall is an innovation to get higher temporal resolution of the rainfall. This paper attempts to evaluate the implementation of rainfall disaggregation model in Sampean Catchments Area using Heytos. The proposed parameter optimation use Moment Performance model that tested by calibrating it with available hourly data. The results of model indicated that only data within five months had good performance. The estimation result showed that relative error total of January, February, August, November, and December was less than one. In case of March, April, May, June, July, September, and October the model could not result respectively to generate model.
PERBANDINGAN SISTEM RAINWATER HARVESTING DI KOTA DAN DESA SEBAGAI ALTERNATIF MENGATASI KEKERINGAN (STUDI KASUS DESA KRAJAN TIMUR DAN DESA PANDUMAN, KAB. JEMBER) Retno Utami Agung Wiyono; Entin Hidayah; Fahir Hassan; Fista Pebriyanti; Alfiati Ningsih
TERAS JURNAL Vol 11, No 1 (2021): Maret 2021
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v11i1.420

Abstract

Abstrak Air adalah sumber daya yang terus dibutuhkan manusia. Dengan menggunakan sistem Rainwater Harvesting RWH), air hujan dapat dimanfaatkan untuk memenuhi kebutuhan domestik. Penelitian ini tidak hanya membahas potensi air yang dapat dimanfaatkan dari sistem RWH yang ada pada satu lokasi saja, akan tetapi mempertimbangkan dua lokasi yang merupakan lokasi yang lebih padat penduduk dan dikategorikan sebagai wilayah kota (Desa Krajan Timur, Sumbersari) dan lokasi yang lebih jarang penduduknya dan dikategorikan sebagai wilayah desa (Desa Panduman, Jelbuk). Dalam penelitian ini digunakan beberapa data yaitu peta lokasi, data curah hujan, dan data kebutuhan air penduduk. Untuk mengetahui kebutuhan air dan sumber air yang digunakan penduduk sehari-hari, dilakukan survey kepada masyarakat yaitu 20 rumah di wilayah kota dan 20 rumah di wilayah desa. Perhitungan potensi air dari sistem RWH dilakukan dengan metode F. J. Mock menggunakan debit andalan 50%. Dari studi ini diperoleh hasil bahwa pada 20 rumah di wilayah kota, sistem RWH berpotensi menghasilkan air sejumlah 3,168 liter/bulan sampai 31,825 liter/bulan. Adapun pada 20 rumah di wilayah desa, potensi air dari sistem RWH pada setiap rumah berkisar antara 15,090 liter/bulan sampai 33,952 liter/bulan. Potensi air tersebut dapat memenuhi seluruh kebutuhan air pada 20 rumah di desa dan 17 rumah di kota, serta dapat memenuhi 44% sampai 72% kebutuhan air pada 3 rumah di wilayah kota. Kata kunci: Rainwater harvesting, kebutuhan air, kesetimbangan air, kota, desa  Abstract Water has always become a vital resource that is needed by a human being. Rainwater may play an essential role as a domestic water supply by rainwater harvesting system. This study compares potential rainwater harvested at two locations considered an urban area with higher population density and a rural area with lower population density. The studied urban area and rural area are Desa Krajan Timur, Sumbersari and Desa Panduman, Jelbuk, respectively. Several data utilized in this study are location maps, precipitation data, and water needs data. Surveys are conducted by interviewing twenty residences in each urban and rural area to obtain water needs and water sources data. Water harvested potential was calculated using F J Mock method. The study results showed that rainwater harvesting system in 20 houses in the urban area could produce 3,168 liters/month until 31,825 liters/month of water. While the rainwater harvesting system in 20 houses in the rural area could produce 15,090 liters/month until 33,952 liters/month of water. The harvested water could fulfill all water needs in 20 houses in the rural area, 17 houses in the urban area, and 44% until 72% of water needs in 3 houses in the urban area. Keywords: Rainwater harvesting, water needs, water balance, urban area, rural area
ANALISIS PERILAKU EFEK RETROFIT KOLOM BETON BERKOMPOSISI STEEL FIBER (ENGINEERED CEMENTITIOUS COMPOSITE / ECC) AKIBAT BEBAN AKSIAL DENGAN MENGGUNAKAN SOFTWARE BERBASIS FINITE ELEMENT ANALYSIS Bagas Rahmandita Subchan; Gati Annisa Hayu; Entin Hidayah
Rekayasa Sipil Vol 13, No 3 (2019)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2019.013.03.8

Abstract

This study presents a simulation analysis of the non-linear behavior of retrofit concrete material due to uniaxial loads modeled in the form of cylinders measuring 150 mm in diameter and 200 mm in depth using the ABAQUS. Analysis of this auxiliary program includes cases of normal concrete retrofit, concrete with retrofit concrete with a composition of 1% steel fiber, and concrete with retrofit concrete composed of 2% steel fiber. From the results of the study conducted, it was shown that in modeling the properties of concrete damaged plasticity in ABAQUS, the use of accurate compressive behavior equations for concrete cases with normal concrete retrofit was core concrete and retrofit concrete using the Alfarah, et al equation. For the case of concrete with steel fiber composition retrofit, core concrete uses the Alfarah equation, and retrofit concrete uses Zhou Jiajia, et al. Whereas to model the tensile behavior accurately in the case of concrete with normal concrete retrofit using the Alfarah, et al equation. And the case of concrete with retrofit steel fiber compositions using the CEB-FIB equation and the Ali & Nehdi equation. The results of ABAQUS analysis of force vs. displacement show a graphical pattern close to the similarity of retrofit concrete column experimental results ECC1 error force ratio and displacement 14.86% and -10.60%, and ECC2 14.82% and 8.01). Based on the stress analysis shows that there is a gradual increase in core concrete where the peak of stress is found in the core area of the concrete core and in the retrofit area is divided into two regions, namely stressing on the center and pulling on a small part of upper and lower column retrofit.
ANALISIS SAMBUNGAN BAUT BALOK KOLOM RANGKA BAJA STRUKTURAL DENGAN PROFIL IWF MENGGUNAKAN PROGRAM BANTU ELEMEN HINGGA Machmud Budi Sulistiyo; Gati Annisa Hayu; Entin Hidayah
Rekayasa Sipil Vol 13, No 3 (2019)
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rekayasasipil.2019.013.03.7

Abstract

Commonly joints problems (especially high strength bolt) were stiffness, ductility, and construction costs. This research was conducted with purpose to analyzed inner force and behavior that could be occurred on high strength bolted joints in steel frame using IWF profiles, such as stress, and reaction force-displacement. This study was divided into 2 step, first step was modeling on finite element software, and second step was analyzing the results and comparing it with the results from experimental study as validation base. In bolted joints model showed the best value on third trial with displacement value of 98,97 mm and reaction force of 41,57 KN. With validation to experimental results each one were 93,45% and 94,05%. Accuracy of hysteretic loop curve area was 98,46%.
STUDI PERAMALAN PASANG SURUT DI PESISIR PANTAI PANCER KECAMATAN PUGER, KABUPATEN JEMBER Nur Alif Ryanto; Retno Utami Agung Wiyono; Entin Hidayah
Maspari Journal : Marine Science Research Vol 14, No 1 (2022)
Publisher : UNIVERSITAS SRIWIJAYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/maspari.v14i1.13653

Abstract

Salah satu data yang dibutuhkan untuk perencanaan pengembangan fasilitas pendukung bangunan pantai yaitu data ramalan pasang surut dan informasi karakteristik kondisi pasang surut yang berguna untuk perencanaan pengelolaan kekayaan laut yang mendukung aktivitas masyarakat pesisir. Data pasang surut dalam perencanaan pengembangan bangunan pantai digunakan sebagai acuan penentuan elevasi tinggi lantai bangunan yang direncanakan agar tidak mempengaruhi bangunan pantai. Penelitian ini bertujuan untuk mendapatkan karakteristik tipe pasang surut menggunakan metode Admiralty, membaca kesesuaian data pasang surut dengan mencari nilai RMSE antara data observasi lapangan dengan peramalan menggunakan program NAO Tide dan Badan Informasi Geospasial (BIG) serta meramalkan pasang surut menggunakan program NAO Tide untuk mengetahui kedudukan elevasi muka air laut selama 3 tahun ke depan di Pesisir Pantai Pancer, Kecamatan Puger, Kabupaten Jember. Data yang digunakan dalam penelitian ini adalah data koordinat lokasi penelitian dan data pengamatan pasang surut di lapangan selama 15 hari pada tanggal 03 Oktober - 17 Oktober 2019.  Hasil penelitian menggunakan metode Admiralty menunjukkan karakteristik kondisi tipe pasang surut di Pesisir Pantai Pancer, Kecamatan Puger, Kabupaten Jember merupakan tipe pasang surut campuran condong harian ganda dengan nilai Formzahl 0,3 serta fluktuasi pasang surut MSL sebesar 143 cm, HHWL sebesar 278 cm dan LLWL sebesar 9 cm. Peramalan pasang surut menggunakan NAO Tide memperoleh nilai RMSE sebesar 11,55% sedangkan peramalan menggunakan BIG memperoleh nilai RMSE sebesar 12,64%. Berdasarkan peramalan pasang surut selama 3 tahun (November 2019 – Desember 2022) menggunakan program NAO Tide menunjukkan nilai HHWL tertinggi sebesar 305 cm pada bulan Februari 2021 dan LLWL terendah sebesar 4 cm pada bulan April 2020. Sedangkan hasil peramalan BIG menunjukkan nilai HHWL tertinggi sebesar 304 cm pada bulan November 2020 dan LLWL terendah sebesar 6 cm pada bulan Juli dan Agustus 2020.
Preliminary Assessment of Morphometric and Hydrological Properties of Six Watersheds in the Eastern Part of East Java Indarto Indarto; Entin Hidayah
Forum Geografi Vol 33, No 1 (2019): July 2019
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v33i1.7858

Abstract

A hydrological process on the watersheds is driven by rainfall as the input. Physical properties  also affect the magnitude response of the watershed to produce run-off. This paper presents the identification, assessment and visualisation of morphometric and hydrological properties of the watersheds.  Six watersheds in the eastern part of East Java were used for the analysis.  Physical characteristics obtained by cropping the GIS layer with a watershed. Topographic and morphometric properties of the watersheds derived from the ASTER G-DEM2. Furthermore, hydrological properties are derived statistically by analysing available rainfall and discharge data. Hydrological data (rainfall and discharge) are available from 1996 – 2014.  Finally, simple statistical analysis by plotting obtained values are used to interpret the relation between morphometric and hydrological properties of the watersheds. The results show the quantitative number (unit) to describe the morphometric and hydrological properties of the six watersheds that can be used for watershed classification.
Generating Hourly Rainfall Model using Bayesian Time Series Model (A Case Study at Sentral Station, Bondowoso) Entin Hidayah; Nur Iriawan; Nadjadji Anwar; Edijatno Edijatno
IPTEK The Journal for Technology and Science Vol 22, No 1 (2011)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v22i1.57

Abstract

Disaggregation of hourly rainfall data is very important to fulfil the input of continual rainfall-runoff model, when the availability of automatic rainfall records are limited. Continual rainfall-runoff modeling requires rainfall data in form of series of hourly. Such specification can be obtained by temporal disaggregation in single site. The paper attempts to generate single-site rainfall model based upon time series (AR1) model by adjusting and establishing dummy procedure. Estimated with Bayesian Markov Chain Monte Carlo (MCMC) the objective variable is hourly rainfall depth. Performance of model has been evaluated by comparison of history data and model prediction. The result shows that the model has a good performance for dry interval periods. The performance of the model good represented by smaller number of MAE by 0.21 respectively.
Co-Authors Adam Rifqi Ammarulsyah Afriq Fadian Syahya Ageng Dwi Wicaksono Ahmad Rizza Lufafi Akhmad Hasanuddin Aldio Dhiva Pratama Alfiati Ningsih Anik Ratnaningsih Arbi Tri Kuswardhana Art Palupi Pranoto Putri Bachtiar Ilham Maulana Bagas Rahmandita Subchan Devi Ratna Handini Dian Wahyu Khaulan Didik Efendi Edijatno Edijatno Edijatno Edijatno Elida Novita Erwan Bagus Setiawan Fahir Hassan Febriyanto, Andreyan Fildzah, Cantika Almas Fista Pebriyanti Gati Annisa Hayu Gatrawan Muchammad Albirru Gusfan Halik Gusfan Halik Gusfan Halik Hajar Crisia Cahyani Icha Derka Indarto Indarto Indarto Indarto Indarto Indarto Indarto Indarto Indra Nurtjahjaningtyas Joice Prasasty September Machmud Budi Sulistiyo Mohamad Andhika Rafif Mokhammad Farid Ma'ruf Mokhammad Farid Ma'ruf Muhamad Zulvi Alhamda Muhammad Arifin Nadjadji Anwar Nadjadji Anwar Nunung Nuring Hayati Nur Alif Ryanto Nur Defitri Herlinda Nur Iriawan Nur Iriawan Prabowo Prabowo Prawira, Akbar Bagus Prihantono, Gunawan Eko Putu Adetya Pariartha Retnaningtias, Sefti Aryani Retno Utami Agung Wahyono Retno Utami Agung Wiyono Rivaldi Dwiky Agustian Rusyidina Tamimi, Rusyidina Sabda Alam Akbar Saifurridzal, Saifurridzal Setyawan, Roeby Sonia Oktariyanti Sri Wahyuni Sri Wahyuningsih Suparno Suparno Syahya, Afriq Fadian Taqiudin Haq Tedy Pranadiarso Usaamah Hadi Wei Koon Lee Wicaksono, Ega Fajar Wiwik Yunarni Wiwik Yunarni Widiarti Yunarni, Wiwik Zulkifli Yusop