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All Journal Maspari Journal BERKALA SAINSTEK Jurnal Teknik Sipil dan Perencanaan Jurnal Teknik Pengairan: Journal of Water Resources Engineering Rekayasa Sipil REKAYASA Jurnal Rekayasa Sipil dan Lingkungan Journal of Applied Geospatial Information Teras Jurnal U Karst Jurnal Rekayasa Sipil Jurnal Riset Rekayasa Sipil Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Jurnal Teknika Journal of the Civil Engineering Forum Warta LPM Jurnal Riset Teknik Sipil dan Sains
Retno Utami Agung Wiyono
Jurusan Teknik Sipil, Fakultas Teknik, Universitas Jember
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Immunology & microbiology Mathematics Physics Social Sciences Transportation

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Tsunami Disaster Risk Assessment Using a Geographic Information System for Puger Sub-District, Jember Regency Suparno Suparno; Retno Utami Agung Wiyono; Entin Hidayah; Wei Koon Lee
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 1 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.01.2

Abstract

The southern region of East Java is located on the Indo-Australian plate. The shifting of these plates allows for earthquakes that trigger tsunamis to occur. The earthquake leads to the impact of a tsunami in several areas, one of which is Puger Sub-District, Jember Regency. The main economic activity of the Puger Sub-District is the fishery; hence significant local coastal communities are vulnerable to tsunami threats. This study aims to map the tsunami risk using a Geographic Information System. The tsunami hazard map used the analysis of the tsunami inundation map from the BMKG. Vulnerability and capacity maps were prepared based on BNPB Chief Regulations. Vulnerability is evaluated based on social, physical, environmental, and economic data. Capacity considers components of the institution, early warning and risk analysis or evaluation, disaster awareness education, reduction of basic risk, and preparedness. The hazard, vulnerability, and capacity maps are classified into five classes. The tsunami risk map is then derived by overlaying the three input maps. Results showed that the villages with very high risk are Puger Kulon and Mojosari at the coastal front areas, covering an area of 13.01% of the total regional area of the Puger Sub-District.
Risk Mapping of Tsunami Ambulu Sub-District, Jember Regency Adden Ramadhan Syarif Ardi; Gusfan Halik; Retno Utami Agung wiyono
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 1 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.01.8

Abstract

Tsunami risk level mapping was carried out in Ambulu Sub-District, Jember Regency, to determine the tsunami risk level in the area. Tsunami risk mapping was carried out by including several components such as vulnerability, which consists of several assessment aspects by the Chief of the National Disaster Management Agency Regulation of the Year 2012, and capacity, which is weighted according to the Chief of the National Disaster Management Agency Regulation of the Year 2012. The hazard component was generated from the bathtub method. The tsunami risk level was obtained after overlaying using a GIS application (Geographic Information System). A very high level of risk is found to apply for Sumberejo Village, with an area of 286 Ha, and Sabrang Village, with an area of 288 Ha. Villages at very high risk are directly adjacent to the coast and have high vulnerability and low disaster management capacity. The other villages, such as Karanganyar Village, Ambulu Village, Tegalsari Village, Andongsari Village, and Pontang Village, do not have a very high tsunami risk because they are far from the coastline and have low vulnerability and high disaster response capacity.
Program Pemasangan Sistem Pemanenan Air Hujan di Masjid Al-Ikhlas Puri Bunga Nirwana Jember Retno Utami Agung Wiyono; Abdur Rohman; Meta Fitri Rizkiana; Joseph Dwi Kurniawan Manno
Warta LPM WARTA LPM, Vol. 25, No. 3, Juli 2022
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1850.866 KB) | DOI: 10.23917/warta.v25i3.1024

Abstract

Air termasuk sumber daya alam yang dapat diperbaharui. Akan tetapi pada kenyataannya, krisis air terus-menerus terjadi sehingga air sumur yang merupakan air tanah harus dihemat penggunaannya. Sebelum program pengabdian ini dilakukan, air sumur merupakan satu-satunya sumber air yang digunakan para jemaah di Masjid Al-Ikhlas, Puri Bunga Nirwana, Jember. Dengan adanya pandemi Covid-19, maka kebutuhan air di masjid semakin meningkat karena jemaah masjid dianjurkan untuk lebih sering mencuci tangan. Di sisi lain, curah hujan di kawasan masjid ini pada musim hujan cukup tinggi. Karena itu, diperlukan upaya untuk memenuhi kebutuhan air jemaah dengan memanfaatkan air hujan untuk mengurangi konsumsi air sumur. Tujuan program pengabdian ini adalah memasang Sistem Pemanenan Air Hujan (PAH) di Masjid Al-Ikhlas untuk menghemat penggunaan air sumur. Sistem PAH memanfaatkan sisi atap sebelah Timur dan Utara masjid untuk menampung air hujan. Air hujan yang ditampung di talang kemudian disalurkan ke pipa yang dihubungkan ke tandon pertama. Dari tandon pertama, air masuk ke dalam filter yang kemudian dihubungkan ke tandon kedua tempat penyimpanan air yang sudah bersih. Setelah itu, air disalurkan melalui pompa untuk masuk ke tandon utama masjid yang digunakan untuk mensuplai kebutuhan air masjid. Hasil dari program pengabdian ini adalah bahwa sistem PAH betul-betul mengurangi konsumsi air sumur. Pada waktu-waktu tertentu, air dari sistem PAH dapat memenuhi kebutuhan air secara penuh sehingga air sumur tidak perlu digunakan. Dapat disimpulkan bahwa PAH sangat bermanfaat untuk mensuplai air di masjid sekaligus mengurangi konsumsi air sumur terutama saat musim penghujan. Setelah dipasang sekitar 6 bulan, perlu dilakukan perawatan terhadap sistem PAH di antaranya memperkuat sistem penyangga pada pipa, mengganti filter air. Selain itu, diharapkan dapat dibuat otomatisasi sistem sehingga penarikan air dari tandon PAH ke tandon utama masjid tidak perlu dilakukan secara manual.
Penentuan Desain Optimum Penstock untuk Pembangkit Listrik Tenaga Mikrohidro di Sungai Poreng, Jember Aldio Dhiva Pratama; Entin Hidayah; Retno Utami Agung Wiyono
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 12 No. 1 (2021)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2021.012.01.07

Abstract

Pipa pesat merupakan saluran penghubung antara bak penenangdengan turbin pada rumah pembangkit. Meminimalisir kehilanganenergi pada pipa pesat sangat penting untuk mengoptimalkanbangkitan energi listrik. Tujuan penelitian ini adalah melakukanoptimasi diameter dan tebal pipa pesat untuk mencari hasil yangpaling efisien, yang dikaji dari aspek hidrolika dan biayanya.Metode pemilihan pipa pesat yang optimal dapat ditentukanberdasarkan hubungan secara empiris, antara berbagai formula daridiameter dan tebal pipa pesat yang dinilai terhadap energi yangdihasilkan serta harga pipa pesat itu sendiri. Hasil penelitianmenunjukkan bahwa besar diameter berbanding lurus dengan besarenergi yang dihasilkan dan harga pipa pesat. Berdasarkanperbandingan, didapatkan diameter optimum pipa pesat sebesar0,45 meter dengan tebal 0,0018 meter yang dihitung menggunakanformula dari Moffat, serta daya bangkitan sebesar 52,16 kW danenergi sebesar 456.914,33 kWh per tahunnya dengan harga pipaIDR 3.610.900 per meter pipa pesat.Penstock is the connecting channel between the forebay and theturbine in the power house. Minimizing the energy loss in thepenstock is very important to optimize the generation of electricalenergy. The purpose of this research is to optimize the diameterand thickness of penstock to find the most efficient results, whichare examined from the aspects of hydraulics and costs. The optimalmethod of penstock selection can be determined based on theempirical relationship between the various formulas of the diameterand thickness of the penstock as assessed by the energy producedand the price of the penstock itself. The results showed that thediameter was directly proportional to the amount of energyproduced and penstock price. Based on the comparison, theoptimum diameter of the penstock is 0,45 meters with a thicknessof 0,0018 meters which is calculated using the formula fromMoffat, as well as a generation power of 52,16 kW and energy of456.914,33 kWh yearly with the price of IDR 3.610.900 per meterpenstock pipe.
Tsunami – Tides Interaction of the South Coast of Jember Using Delft3D-Flow Narulita, Norma Aulia; Wiyono, Retno Utami Agung; Halik, Gusfan; Pratama, Munawir
Jurnal Teknik Pengairan: Journal of Water Resources Engineering Vol. 14 No. 2 (2023)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.pengairan.2023.014.02.5

Abstract

The tsunami of June 3, 1994, which originated from a shift in the Indo-Australia plate, resulted in hundreds of casualties and material damage on the south coast of Jember. This study aims to understand the tidal impact of a tsunami in terms of arrival time and wave height. Several simulations of the interaction of tidal waves with tsunami waves were carried out through numerical modeling using Delft3D with modified wave characteristics from the Banyuwangi tsunami on June 3, 1994, as well as using bathymetry data from BATNAS and BIG tide data. The results of the analysis show that tidal waves can be a factor affecting the height of the tsunami waves. The increase in the amplitude of the tsunami waves was considered very local from the three observation points. This is shown at the observation locations of Puger Beach and Watu Ulo Beach, where the maximum wave amplitude occurs when the tsunami occurs independently of 7.102 m and 5.56 m, while at the Tanjung Pelindu observation location, the highest amplitude occurs when the tsunami meets the tides during low tide phase, which is 3.68 m. This research is expected to provide a basic understanding of the dynamic impact of the tidal wave when a tsunami occurs.
Mapping the Lava Flood Hazard Using the Flood Discharge Approach and 2D Hydrodynamic Modeling at the Rejali River, Mount Semeru Prawira, Akbar Bagus; Hidayah, Entin; Wiyono, Retno Utami Agung
Journal of the Civil Engineering Forum Vol. 10 No. 2 (May 2024)
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.8463

Abstract

In December 2021, Mount Semeru experienced an eruption accompanied by extreme rainfall, which resulted in lava floods, known as lahars or debris flows. The lava flood destroyed infrastructure, resulting in loss of life. Various rivers surrounding Mount Semeru, including the Rejali River, experienced the effects of this phenomenon. To address this, a study is needed to analyze the occurrence and frequency of lava floods over specific time intervals through the creation of a hazard map. This study aims to map the hazard of lava floods for various return periods using a coupled HEC-HMS and HEC-RAS software alongside a lava flood discharge approach. The HEC-HMS software is used to simulate hydrological processes, to obtain the lava flood discharge, while the HEC-RAS is used to model a two-dimensional (2D) lava flood hazard map. The input parameters of the modeling in this study are rainfall intensity, soil type, land cover, river distance, slope, and elevation. The results show that the flood area covers 9.55% of the total study area by 2 year return period (Q2), 11.80% by Q10, 14.10% by Q50, and 15.72% by Q200 with an overall validation Root Mean Square Error (RMSE) of 0.16. These changes are determined by the discharge volume from each return phase and the river's shallow depth, which causes overflow beyond the river's ability to accommodate the flow. Thus, this study suggests that the models successfully generated a reliable model for mapping the risk of lava floods on the Rejali River. These findings can help the government reduce disaster losses through adequate adaptation and mitigation initiatives.
Study of Rainfall and Water Discharge Spatial Variability Using Exploratory Spatial Data Analysis Method in Bondowoso Regency Faillasuf, Vide Mirza; Halik, Gusfan; Wiyono, Retno Utami Agung
BERKALA SAINSTEK Vol 9 No 1 (2021)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v9i1.16179

Abstract

The difference in rainfall intensity affects the hydrological cycle as a process that greatly determines the amount of water discharge. Thus, in water resources management, it is important to determine the distribution pattern of rainfall and discharge. By studying the characteristics of rainfall distribution patterns and water discharge, the potential of water resources can be illustrated well. This study uses the Exploratory Spatial Data Analysis method to examine spatial variability of rainfall intensity and water discharge in Bondowoso Regency. Rainfall and discharge data are collected from 35 rain stations and 227 weirs in 2008 until 2018. This study produces monthly average rainfall distribution values between 190 mm / month with monthly average discharge between 7300lt/sec/month. Meanwhile, the obtained average annual rainfall distribution values are between 2300 mm/year with annual average discharge values between 105000 lt/sec/month. The spatial distribution map using IDW method produces information on the potential of water resources as follow: the higher the height of a place, the higher the average monthly rainfall, while the lower the height of a place, the higher the average monthly discharge. As for the obtained correlation value between rainfall and discharge is R² = 0.665.
The Assessment of Climate Change Impact on Meteorological Draught Susceptability on Sampean Watershed Ratih, Masita; Halik, Gusfan; Wiyono, Retno Utami Agung
BERKALA SAINSTEK Vol 9 No 4 (2021)
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/bst.v9i4.25065

Abstract

Drought disasters that occur in the Sampean watershed from time to time have increased, both the intensity of events and the area affected by drought. The general objective of this research is to develop an assessment method for the impact of climate chan ge on vulnerability to drought disasters based on atmospheric circulation data. The specific objectives of this study are to model rainfall predictions based on atmospheric circulation data, predict rainfall in various climate change scenarios (Intergovernm ental Panel on Climate Change, IPCC – AR5), and assess vulnerability to drought disasters using a meteorological approach. The Standardized Precipitation Index (SPI) is one way to analyze the drought index in an area which was developed previous researcher. The Standardized Precipitation Index (SPI) is designed to quantitatively determine the rainfall deficit with various time scales. The advantage of the Standardized Precipitation Index (SPI) is that it is enough to use monthly rainfall data to compare drou ght levels between regions even with different climate types. To facilitate the presentation of the data base on the identification of d rought susceptibility, we need a system that can assist in building, storing, managing and displaying geographically ref erenced information in the form of spatial mapping. This research facilitates monitoring of the area of drought-prone areas, predicts drought levels, prevents future drought disasters, and prepares plans for rebuilding drought-prone areas in the Sampean watershed.
Pengaruh Hutan Mangrove Terhadap Reduksi Gelombang di Pantai Bama Kabupaten Situbondo dengan Pemodelan Menggunakan Delft3D Imanda, Regita Ramadhani; Wiyono, Retno Utami Agung; Widiarti, Wiwik Yunarni
Rekayasa Vol 18, No 1: April 2025
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/rekayasa.v18i1.26555

Abstract

Mangrove forest in Bama Beach is one of the mangrove forests in Indonesia. Mangroves in the Bama Beach area have a function to protect various ecosystems around it from damage due to abrasion or sedimentation. Bama Beach, whose status is still in the Baluran National Park area and a tourist spot that has a beautiful charm, needs to be protected from wave damage so that wave reduction modeling research is carried out on the influence of mangrove forest width using Delft3D software. Modeling was carried out to obtain the value of energy reduction and wave height due to the presence of mangrove forests with different widths. The modeling results found that the highest significant wave height occurred on July 16, 2023 at 12:00 WIB. Mangrove forests with a thickness of 125 m can reduce wave height by 30.031% and wave energy by 48.263%. Mangrove forests with a thickness of 110 m can reduce up to 15.988% of wave height and 31.268% of wave energy. Mangroves with a thickness of 37 m can reduce up to 4.049% of wave height and 10.940% of wave energy.
Benefit-Cost Analysis of Bioretention for Suburban Drainage Load Reduction Induced by Surface Runoff Putri, Fidyasari Kusuma; Robbani, Hilma Wasilah; Pranantya, Vanadani; Widiarti, Wiwik Yunarni; Wiyono, Retno Utami Agung
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 10 No 2 (2025): SEPTEMBER
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v10i2.1558

Abstract

Suburban areas with predominantly residential land use and low soil infiltration rates are highly vulnerable to surface runoff and local flooding. This study examines the effectiveness and economic performance of bioretention systems as a runoff management solution in the Wonojati and Jenggawah areas, Jember Regency. Hydrological simulations were conducted using SWMM 5.2 software for two intervention scenarios, namely the application of bioretention in 10% and 20% of the subcatchment areas. The effectiveness of the system was evaluated based on runoff volume reduction, while the economic aspect was assessed using the Benefit-Cost Ratio (BCR) approach. The simulation results showed that the system reduced runoff by 13.6% in Plan 1 and 17.4% in Plan 2. However, BCR values of 0.014 and 0.022, respectively, indicate that the annual financial benefits are not sufficient to cover the system’s annualized costs. These findings highlight the need for alternative approaches that are more economically efficient. The use of decentralized LID systems such as rain barrels is considered more adaptive for dense residential areas and is recommended as a complementary solution to enhance the resilience of drainage systems in flood-prone suburban regions.
Co-Authors Abdur Rohman Adden Ramadhan Syarif Ardi Ageng Dwi Wicaksono Agil Priyanto Akbar, Sabda Alam Aldio Dhiva Pratama Cahyani, Hajar Crisia Entin Hidayah Fahir Hassan Faillasuf, Vide Mirza Faradella, Maulida Gusfan Halik Hajar Crisia Cahyani Hery Budi Sulaksono Hilma Wasilah Robbani Imanda, Regita Ramadhani Indra Nurtjahjaningtyas Joseph Dwi Kurniawan Manno Malini, Citra Meta Fitri Rizkiana Narulita, Norma Aulia Ningsih, Alfiati Nur Alif Ryanto Pebriyanti, Fista Prakoso, Tara Adi Pratama, Munawir Prawira, Akbar Bagus Prihartami, Sabrina Putra, Victorius Setiaji Putri, Fidyasari Kusuma Ratih, Masita Risqi Sofiana Saifurridzal Sofiana, Risqi Suparno Suparno Vanadani Pranantya Wei Koon Lee Windy Bana Alam Perkasa Wiwik Yunarni Widiarti