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All Journal International Journal of Advances in Applied Sciences Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Journal of Degraded and Mining Lands Management Jurnal Wilayah dan Lingkungan Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir Jurnal Informatika Kaputama (JIK) RISTEK : Jurnal Riset, Inovasi, dan Teknologi Kabupaten Batang Jurnal Geosains dan Remote Sensing (JGRS) APPLIED RESEARCH ON CIVIL ENGINEERING AND ENVIRONMENT (ARCEE) Journal of Applied Geology Karimah Tauhid Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir
Hendy Setiawan
Department Of Geological Engineering, Faculty Of Engineering, Universitas Gadjah Mada
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Evaluasi Pengelolaan Embung di Kabupaten Sleman, Daerah Istimewa Yogyakarta Wilopo, Wahyu; Setiawan, Hendy; Eka Putra, Doni Prakasa
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 17, No 3 (2020): November 2020
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (850.964 KB) | DOI: 10.14710/presipitasi.v17i3.205-214

Abstract

The Indonesian government has promoted reservoir (embung) development programs throughout Indonesia. This program is primarily designed at supporting agricultural irrigation, especially in the dry season. However, in its implementation, there are often many obstacles both in technical and management, causing the main purpose of the reservoir construction cannot be achieved optimally. Therefore, this study aims to evaluate the condition of the reservoir located in Sleman Regency, Yogyakarta Special Region, in terms of physical, institutional, and management constraints. The study was conducted through a direct survey of 9 reservoirs and interviews with managers and residents around the reservoir. The results showed that two reservoirs have small damage in the reservoir building, three reservoirs do not yet have managers, and three reservoirs have not functioned following the purpose of reservoirs development. The obstacle often found in managing reservoirs is the unclear structure for the management of the reservoir, and the existing management is not effectively working. Therefore, the regulation of using reservoir water is not available. It is necessary to have a management organization involving the community and village government where the reservoir is located and also community beneficiaries of agricultural irrigation to guarantee its function and sustainability.
The 22 February 2018 landslide mechanism in Pasir Panjang Village, Brebes Regency, Central Java, Indonesia Wahyu Wilopo; Adam Raka Ekasara; Hendy Setiawan; Dwikorita Karnawati
Journal of Applied Geology Vol 4, No 2 (2019)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2245.096 KB) | DOI: 10.22146/jag.53255

Abstract

On 22 February 2018 landslide occurred in Pasir Panjang Village, Salem District, Brebes Regency of Central Java Province, Indonesia. About 8 people were died, 4 people were injured and several infrastructures were damaged due to this landslide. This research is carried out to understand geological-geotechnical condition and to study the initiation mechanism of the landslide. Field investigation and UAV mapping are carried out to detect slip surface and define slope geometry. The rainfall-induced pore-water pressure is estimated by using the Slope Infiltration Distributed Equilibrium (SLIDE) model. Then, limit equilibrium method is used to estimate the safety factor of the slope, while the shear strength parameters are determined by applying back analysis approach that compared with data from laboratory tests. The results show that landslide occurred in permeable layer of silty sand overlaid above impermeable andesitic breccia. Results from back analysis indicate that the shear strength parameters and rainfall intensity are strongly influence the stability of slope against landslide.
Assessment of groundwater leakage source using hydrochemical data and isotopes in the Pandanduri dam tunnel, Lombok Island, Indonesia Heru Hendrayana; Doni Prakasa Eka Putra; Hendy Setiawan; I Gde Budi Indrawan; Wawan Budianta; Wahyu Wilopo
Journal of Degraded and Mining Lands Management Vol 10, No 1 (2022)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2022.101.3961

Abstract

Leakage or seepage in reservoirs and dams has the potential for structural instabilities persuaded by water leakage pathways and linked to economic consequences. An environmental isotopic and hydrochemical research was conducted to determine the source and origin of seepages on the tunnel of Pandanduri dam, Lombok Island, Indonesia. This study aimed to examine the source of the tunnel leak on the dam site and the origin or source of water at the point of leakage based on water chemistry data and stable isotopes. To identify the source of the leakage water in the tunnel dam, 33 samples of the leakage water, groundwater, reservoir water, river water, and rainfall water were taken for chemical and isotopic composition analysis. The field measured the reservoir level, spring discharges, and physicochemical parameters (EC, pH, TDS, TSS). The physicochemical parameters show that the leakages water is similar to reservoir water. The types of leakage water in the tunnel belong to alkaline water, predominantly sulfate-chloride. This type of water is deep groundwater with a higher sulfate and chloride concentration than surface water or shallow groundwater. Hydrochemical and isotope analysis showed that water origin at leakage points is dominated by groundwater.
Slope Stability Analysis Using Finite Element Method on Tepus-Jerukwudel Road Dian Rusmanawati; I Gde Budi Indrawan; Hendy Setiawan
Applied Research on Civil Engineering and Environment (ARCEE) Vol. 3 No. 03 (2022): Resilience in Construction
Publisher : POLITEKNIK NEGERI JAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/arcee.v3i03.4801

Abstract

Tepus-Jerukwudel Road construction is one of the South Coast Java Road sections located in Gunungkidul Regency, Special Region of Yogyakarta. One of the hills with the deepest excavation depth is at STA 14+350. The research location includes the Punung Formation which is dominated by reef limestones. The existing rock lithology is floatstone. The depth of the road excavation is more than 20 meters. The slope design is 3V:1H. This research aimed to analyze the slope stability of the Tepus-Jerukwudel Road and assess the safety factor of the slope design. We used the finite element method (FEM) in the Rocscience Phase2 v8.0 software by applying the Generalized Hoek-Brown method for the rock failure criteria. The loads considered in the slope stability analysis were live loads, dead loads, surcharge loads, and seismic loads. The results of the slope analysis without seismic loads resulted in the safety factor values for the left and right slopes of 4,49 and 3,32, respectively. For seismic loads conditions, the safety factor values for the left and right slopes are 3,74 and 2,66. The results indicated that slope design of the road is in a stable condition in accordance with the estimated static and seismic loads.
PENDAMPINGAN AKSELERASI IMPLEMENTASI MBKM KOMUNITAS DKM DI UNIVERSITAS PENDIDIKAN MUHAMMADIYAH SORONG Yanuar Dwi Prastyo; Lien Herlina; Agus Muji Santoso; Alia Bihrajihant Raya; Nanang Wahyudin; Anggraeni Dyah Sulistiowati; Evi Rinata; Anang Wahid Muhammad Diah; Agus Syahrani; Rima Herlina Setiawati Siburian; Willy Bachtiar; Hendy Setiawan; Finda Meyditia; Ronny Lesmana; Arifin Dwi Saputro; Akim Manaor Hara Pardede
Jurnal Informatika Kaputama (JIK) Vol 6 No 2 (2022): Volume 6, Nomor 2, Juli 2022
Publisher : STMIK KAPUTAMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59697/jik.v6i2.122

Abstract

Komunitas Duta Kampus Merdeka (DKM) 2022 memiliki sifat (nature) go-to-person dalam melaksanakan tugasnya untuk mengakselerasi implementasi kebijakan Merdeka Belajar Kampus Merdeka (MBKM) sesuai dengan spirit transformasi pendidikan tinggi. Oleh karena itu, DKM diharapkan mampu berperan sebagai problem shooter yaitu mampu menjawab dan membantu memecahkan masalah tentang implementasi program Kampus Merdeka baik di lingkungan Perguruan Tinggi (PT) maupun di PT sekitar. Salah satu upaya untuk mengoptimalkan peran dan nature DKM serta membantu penyelesaian masalah dan mengakselerasi implementasi Kampus Merdeka di perguruan tinggi, maka DKM Leads menjalin kerjasama dengan Lembaga Layanan Pendidikan Tinggi (LLDIKTI) untuk melaksanakan kegiatan kolaborasi. Kolaborasi dilaksanakan dalam bentuk Pendampingan Akselerasi Implementasi MBKM yang bertujuan meningkatkan kapasitas DKM sebagai problem shooter dengan solusi yang disampaikan secara on the spot. Selain itu, kegiatan tersebut juga bertujuan untuk meningkatkan sinergi dalam memetakan dan memberikan rekomendasi tematik bagi perguruan tinggi dan program studi yang masih memiliki kendala dalam implementasi Kampus Merdeka. Melalui Pendampingan Akselerasi Implementasi MBKM, DKM dan LLDIKTI dapat membantu mengakselerasi implementasi MBKM secara sistemik dan komprehensif.
Groundwater recharge estimation using chloride mass balance method on the southern slope of Merapi Volcano, Indonesia Restu Dwi Cahyo Adi; Wahyu Wilopo; Hendy Setiawan
International Journal of Advances in Applied Sciences Vol 12, No 3: September 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v12.i3.pp265-273

Abstract

Groundwater is a main resource for the majority of Indonesian people as a source of clean water to meet their daily needs. The increase in groundwater use is unavoidable due to increasing development in Indonesia, especially in Yogyakarta. Groundwater recharge is important in the hydrological cycle to meet groundwater needs. Therefore, this study aims to estimate groundwater recharge by the chloride mass balance (CMB) method on the southern slope of Merapi Volcano in Yogyakarta, Indonesia. This research was conducted in the rainy and dry seasons from August 2022 until January 2023. This research collects annual rainfall near the study area from the Meteorology, Climatology, and Geophysics Agency (BMKG) Yogyakarta station, monthly data collected from eighteen samples of groundwater station, and monthly data collected from fifteen samples of rainwater in the study area. The chemical content of groundwater and rainwater samples is analyzed using argentometry to obtain chloride concentration. The result of annual rainfall in the study area is 3,603.878 mm/year. The average chloride concentration in rainwater is 1.1 mg/L, while the average chloride concentration in groundwater is 8.015 mg/L. The CMB method calculation showed that the recharge in the study area ranges from 171.65 to 1,711.29 mm/year. The groundwater recharge has a positive correlation with elevation and rainfall. High groundwater recharge is also found in the northern area due to fractured lava aquifer.
Characteristics of Nitrate Pollution in Shallow Groundwater on the South Slope of Mount Merapi, Yogyakarta, Indonesia Adi, Restu Dwi Cahyo; Wilopo, Wahyu; Setiawan, Hendy
EKSPLORIUM Vol 44, No 1 (2023): May 2023
Publisher : Badan Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/eksplorium.2023.6876

Abstract

Groundwater is the primary clean water source for most Indonesian society. The increasing use of groundwater is inevitable due to the rapid development in Indonesia, particularly in Yogyakarta. Shallow aquifers are vulnerable to contamination due to anthropogenic influences. Therefore, this research aims to determine shallow groundwater's physicochemical and chemical characteristics on the southern slope of Mount Merapi, specifically focusing on nitrate and chloride concentrations in groundwater. This research collected monthly data from eighteen dug wells or springs and rainfall data in the study area during the rainy and dry seasons from August 2022 to January 2023. The analyzing sample used argentometry to determine chloride concentration and ultraviolet spectrophotometric to determine nitrate concentration in Yogyakarta Environmental Health and Disease Control Technical Center (BBTKLPP) laboratory. The physicochemical parameters were tested directly in the field using Hanna instruments. The results indicate that a significant portion of shallow groundwater has high nitrate concentrations, corresponding to the growing settlements in the research area. Furthermore, according to the comparison graph between nitrate and chloride, the nitrate source was indicated as anthropogenic. Fecal matter from sanitation practices using septic tanks will likely influence the nitrate increase.
Comparison of Vs30 Value from Microtremor Data Based on SPT Drill Test of Young Merapi Deposits in Opak River, Yogyakarta Adelia Saras Nugraheni; Agung Setianto; Hendy Setiawan
Jurnal Geosains dan Remote Sensing Vol 5 No 2 (2024): JGRS Edisi November
Publisher : Department of Geophysical Engineering, Faculty of Engineering, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jgrs.ft.unila.304

Abstract

The 2006 Yogyakarta earthquake was caused by the tectonic movement of the Opak Fault, which is located near the Opak River. This research conducts microtremor data processing and analysis using the Horizontal Vertical Spectral Ratio (HVSR) method and the Inversion method to determine dominant frequency (fo), amplification (Ao), and shear wave velocity to a depth of 30 meters (Vs30) in Opak River area as an effort in earthquake disaster mitigation. The purpose of this research is to compare the Vs30 value of the inversion method using layer parameters according to Standard Penetration Test (SPT) data from previous research and layer parameters according to the number of lithologies. The result presents that the Vs30 values around Opak River are in the range of 183 - 301 m/s and belong to the stiff soil site classification. The comparison shows that the Vs30 values in the two different layer parameters are both still in the stiff soil site classification and have a slight difference in Vs30 values. Thus, the use of microseismic data to determine the Vs30 value is a fast and efficient way to determine the subsurface geology of the study area.
Kajian Geologi Lingkungan Untuk Pengembangan Kawasan di Desa Bejiharjo, Kecamatan Karangmojo, Kabupaten Gunungkidul Budianta, Wawan; Hendrayana, Heru; Putra, Doni Prakasa Eka; Wilopo, Wahyu; Indrawan, I Gde Budi; Setiawan, Hendy
Jurnal Wilayah dan Lingkungan Vol 13, No 1 (2025): April 2025
Publisher : Department of Urban and Regional Planning, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jwl.13.1.33-48

Abstract

Aspek geologi lingkungan memegang peran penting dalam perencanaan wilayah. Penelitian ini mengevaluasi beragam parameter geologi, terutama terkait airtanah dan sifat permukaan, untuk memperkuat pengembangan wilayah Desa Bejiharjo di Kecamatan Karangmojo, Kabupaten Gunungkidul. Parameter yang diteliti meliputi kedalaman muka air tanah dan Total Dissolved Soil (TDS), yang diperoleh dari sumur gali dan hanameter, serta karakteristik tanah dan batuan yang didapatkan melalui pemetaan. Temuan penelitian memaparkan tiga zona kedalaman muka air tanah (dangkal <6 m, dalam 6-20 m, sangat dalam >20 m), dua zona TDS (excellent <300 mg/L, good 300-600 mg/L), serta dua zona satuan permukaan (zona tanah dan batuan). Zonasi pengembangan kawasan ditentukan melalui pembobotan setiap parameter dan pengklasifikasian skor yang membaginya menjadi zona sangat mampu, mampu, dan kurang mampu. Zona yang dianggap cocok untuk pengembangan adalah zona mampu dan sangat mampu yang menunjukkan variasi karakteristik lahan dengan kedalaman muka air tanah antara <6 m hingga >20 m, permukaan yang terdiri dari campuran tanah-batuan, dan nilai TDS antara <300 hingga 600 mg/L. Sebaliknya, zona kurang mampu diisi dengan kedalaman air tanah dari 6 m hingga >20 m, permukaan yang merupakan tanah residu, dan nilai TDS antara <300 hingga 600 mg/L. Dominasi tanah residu menjadi faktor utama yang mengkategorikan zona ini sebagai zona kurang mampu karena tanah residu memiliki kualitas pondasi yang kurang dibandingkan dengan batuan.
Analisis Yuridis terhadap Hak Atas Tanah Terdaftar yang Dikuasai dan Dimanfaatkan oleh Pihak Ketiga karena Telantar Berdasarkan Peraturan Pemerintah Nomor 20 Tahun 2021 Tentang Penertiban Kawasan dan Tanah Telantar Setiawan, Hendy; Monaya, Nova; Sihotang, Sudiman
Karimah Tauhid Vol. 3 No. 12 (2024): Karimah Tauhid
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/karimahtauhid.v3i12.14706

Abstract

Tanah telantar diartikan sebagai tanah yang dimiliki seseorang, namun tidak dipergunakan dan tidak diusahakan sesuai keadaannya, sifat pemilikan serta tujuan perolehan hak atas tanah. Kepemilikan tanah telantar di pemukiman biasanya karena pemilik tanah memanfaatkan tanah tersebut dengan tujuan investasi kepemilikan aset. Peraturan Pemerintah Nomor 20 Tahun 2021 mengatur mengenai objek penertiban tanah telantar. Tanah yang tidak diusahakan dan dimanfaatkan menjadi objek penertiban tanah telantar. Penelitian ini dilakukan untuk mengetahui dan menganalisis pengaturan tanah terdaftar yang ditetapkan sebagai tanah telantar serta perlindungan hukum terhadap pemilik tanah terdaftar yang dikuasai dan dimanfaatkan secara fisik oleh pihak ketiga pada perumahan CGCJ. Penelitian yang dilakukan merupakan jenis penelitian hukum normatif yaitu yaitu penelitian hukum yang mengutamakan data sekunder (data yang diperoleh dari bahan bahan pustaka). Jenis penelitian yaitu deskriptif analitis dan preskriptif. Hasil penelitian menunjukkan Peraturan Pemerintah Nomor 20 Tahun 2021 memberikan dasar hukum kuat, dengan melalui prosedur penertiban sampai terbitnya peringatan tertulis dan sanksi sehingga melindungi hak atas tanah terdaftar yang dikuasai dan dimanfaatkan oleh pihak ketiga karena telantar. Hak dan kewajiban pemegang izin tanah terdaftar diatur sedemikian rupa sehingga menciptakan dasar hukum yang kokoh untuk pengelolaan tanah yang efektif dan efisien. Selain aspek hukum, peraturan ini mendorong manfaat sosial dan pemanfaatan sumber daya tanah secara berkelanjutan. Perlindungan hukum bagi pemilik tanah terdaftar diatur dengan ketat pada Peraturan Pemerintah Nomor 20 Tahun 2021, pemilik hak atas tanah memiliki hak untuk melindungi kepentingan dan integritas propertinya. Dalam upaya mencegah tanah telantar, aturan tersebut mengatur bahwa pemegang hak atau izin usaha atas tanah/kawasan memiliki kewajiban untuk aktif mengusahakan, mempergunakan, dan memanfaatkan tanah tersebut. Dengan demikian, perlindungan hukum bagi kepemilikan tanah terdaftar di CGCJ yang dimanfaatkan oleh pihak ketiga mencerminkan komitmen untuk menjaga keadilan, keberlanjutan, dan keseimbangan antara hak pemilik, kepentingan masyarakat, dan kebutuhan negara.
Co-Authors Adelia Saras Nugraheni Adi, Restu Dwi Cahyo Agung Setianto Agus Muji Santoso Agus Syahrani Alia Bihrajihant Raya Anang Wahid M.Diah Anggraeni Dyah S Arifin Dwi Saputro Bachtiar, Willy Dian Rusmanawati Doni Prakasa Eka Putra Dwikorita Karnawati Dwikorita Karnawati Ekasara, Adam Raka Evi Rinata Febriani Daud, Rosy Finda Meyditia Herlina, Lien Heru Hendrayana I Gde Budi Indrawan Monaya, Nova Nanang Wahyudin Pardede, Akim Manaor Hara Restu Dwi Cahyo Adi rima siburian Ronny Lesmana Sihotang, Sudiman Wahyu Wilopo Wawan Budianta Yanuar Dwi Prastyo