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Shallow Aquifer Groundwater Facies At Multiple Landuse Sites In Manglayang Volcanic Area, Jatinangor And Surroundings, Indonesia Bombom Rachmat Suganda; Wahyudi Yusuf; Mochamad Nursiyam Barkah; Cecep Yandri Sunarie; M. Sapari Dwi Hadian
Journal of Geoscience, Engineering, Environment, and Technology Vol. 6 No. 2 (2021): JGEET Vol 06 No 02 : June (2021)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2021.6.2.3315

Abstract

Manglayang Mountain is generally composed by old and young volcanic materials. Older rocks are located around the northern part of mountain peak, in medial and distal parts. In the southern and southeastern parts composed by relatively young volcanic rocks starting from the proximal, medial to distal. These geologic conditions produce diverse aquifer systems. These differences in land use environments contribute to water quality conditions in local shallow aquifers. The research is therefore carried out in order to the effect of difference in land use environments on groundwater facies by dividing the area based on each land use. Land use in the research area is dominated by allotment of agricultural land, settlement, and industry. The study was conducted from the medial area to distal to the southern part of Manglayang Mountain, administratively including Sukasari, Jatinangor, and Rancaekek districts. To observe the groundwater conditions in the aquifer from the study area, physical and chemical parameters were tested. Chemical parameter test results were plotted using piper diagrams and Durov diagrams as a method that can illustrate the condition of groundwater facies. Physical characteristics of groundwater may reflect groundwater interactions with rocks. Measurable TDS concentrations of 48 - 299 mg / L and measured EC 100 - 1020 μmhos / cm, show different interaction conditions between groundwater with rocks or have received different material subsidies. Similarly, the occurrence of temperatures that vary considerably between air and water indicates the distance of groundwater sources with various water bodies. The groundwater facies that developed in the research area are generally dominated by Ca, HCO3 in the agricultural land use area, Mg, HCO3 in the settlement area, and in some Cl-facing evolving places in the industrial land use zones. In addition, there are also indications of mixing of anions and cations in groundwater samples in all three land use areas. This indicates that there has been a change in groundwater characteristics in some areas of land use utilization in the research area
Groundwater Conservation Strategy Based on Water Balance at Muarabungo Groundwater Basin, Indonesia Mochamad Nursiyam Barkah; Fauziyah Hani; Bombom Rachmat Suganda; Munib Ikhwatun Iman; Cecep Yandri Sunarie; Mohamad Sapari Dwi Hadian
Journal of Geoscience, Engineering, Environment, and Technology Vol. 6 No. 3 (2021): JGEET Vol 06 No 03 : September (2021)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2021.6.3.3976

Abstract

Muarabungo Groundwater Basin,is locateed in Jambi and West Sumatra Province. Based on the four rainfall stations in Muaratebo, Dusun Rantau Pandan, Sungai Bengkal and Komplek Pengairan PU Station recorded in 2008 to 2011, the precipitation (ppt) in study area is 1799.09 mm/year. Value of evapotranspiration (Evpt) in the study area is equal to 1261.26 mm / year (70.1%). Groundwater Basin of Muarabungo has an infiltration debit of 2,516,791,750 m3 / year and run-off debit (Ro) of 798 042 638 m3 / year. Rock composer in the Muarabungo Groundwater Basin are dominated by Alluvium Deposition, Quaternary rocks, and also the surrounding areas are composed by igneous and metamorphic rocks. Aquifer with a good productvity can be found on Alluvium and sedimentary rocks such as tuff sandy, whereas region without exploitable groundwater are composed by igneous rocks and metamorphic rocks. Based on groundwater quality, Groundwater Basin is divided into 13 facies, namely Ca; Cl, ​​Mg; Cl, ​​Na + K, Cl, Ca; HCO3, Mg; HCO3, Na + K; HCO3, Ca; No. dominant type, Mg; Nodominan type, Na + K; No. dominant type, No. dominant type; Cl, ​​No. dominant type; HCO3, Nodominan type; SO4, and No. dominant type; No. dominant type. The result of water balance measurement in research area is used to show the areas for crisis and secure area. The water balance calculation and determining recharge and discharge areas are needed for developing conservation strategy.
Zonasi Intrusi Air Laut pada Sistem Akuifer Tertekan Atas Cekungan Air Tanah Jakarta Mafira Yuwandari; Teuku Yan Waliana Muda Iskandarsyah; Mochamad Nursiyam Barkah; Taat Setiawan; Janner Rahmat Sudianto Nababan
Jurnal Lingkungan dan Bencana Geologi Vol 11, No 2 (2020)
Publisher : Badan Geologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34126/jlbg.v11i2.310

Abstract

Daerah Khusus Ibukota (DKI) Jakarta merupakan ibukota negara Indonesia yang terus berkembang pesat seiring dengan pertumbuhan industri, permukiman, perdagangan, dan jasa. Perkembangan daerah yang seiring dengan pertumbuhan penduduk mengakibatkan kebutuhan air bersih juga semakin meningkat. PDAM masih belum mampu mencukupi kebutuhan air masyarakat sehingga air tanah menjadi sumber air utama untuk kebutuhan harian dan komersil. Pemanfaatan air tanah yang tidak terkendali dapat mempengaruhi kondisi air tanah di Jakarta. Oleh karena itu, penelitian ini dilakukan untuk mengetahui kondisi air tanah di bagian utara CAT Jakarta khususnya pada sistem akuifer tertekan atas (40-140 mbmt) berdasarkan hasil pengamatan lapangan dan analisis laboratorium melalui 27 (dua puluh tujuh) sumur terpilih. Aliran air tanah daerah penelitian mengarah dari selatan ke utara. Hasil analisis Diagram Piper menunjukkan fasies air tanah daerah penelitian terbagi menjadi empat yaitu Na-HCO3 , Ca-HCO3 , Na-Cl, dan mixed (Ca-Na-HCO3 , Na-Ca-HCO3 , Ca-Na-HCO3 -Cl). Tingkat keasinan air tanah daerah penelitian terbagi menjadi dua zona yaitu tawar dan tawar-payau. Analisis rasio γNa/γCl, TDS terhadap elevasi MAT, DHL terhadap Cl, dan γCl/(γCO3 +γHCO3 ) menghasilkan lima zona intrusi yang mengalami perubahan dari tahun 2015 - 2018 yaitu zona air tawar, zona intrusi air laut sedikit, zona intrusi air laut sedang, zona intrusi air laut agak tinggi, dan zona intrusi air laut tinggi.Kata kunci: cekungan air tanah Jakarta, fasies air tanah, hidrokimia, intrusi air laut Special Capital Region of Jakarta, the capital city of Indonesia, is a rapidly developing city with a rapid growth in industry, population, business, and service. The rapid growth of population in the city has escalated the need for clean usable water. Groundwater has been the main source of water used by the people for daily needs and activities, since PDAM has failed to meet the needs effectively. Groundwater condition in Jakarta is likely to be affected by unauthorized misuses. Therefore, this research was conducted in order to examine the groundwater condition in northern part of Jakarta Groundwater Basin based on field observation and laboratory analysis of 27 selected wells. Groundwater flow in the northern part of Jakarta Groundwater Basin flowed from the south toward the north. Based on Piper Diagram analysis, groundwater facies were divided into four facies: Na-HCO3 , Ca-HCO3 , Na-Cl, and mixed (Ca-Na-HCO3 , Na-Ca-HCO3 , Ca-Na-HCO3 -Cl). Based on the salinity, the groundwater was divided into two zones: fresh water and fresh-brackish water. Based on the ratio of γNa/γCl, TDS to groundwater elevation, EC to Cl, and γCl/(γCO3 +γHCO3 ); there were five intrusion zones in the observed area: fresh water zone, slight seawater intrusion zone, medium seawater intrusion zone, slightly high seawater intrusion zone, and high seawater intrusion zone.Keywords: Jakarta groundwater basin, groundwater facies, hydrochemistry, seawater intrusion
Groundwater Resilience Study for Sustainable Tourism Development Through Electrical Sounding Method in Mansinam Island, Manokwari Regency, West Papua, Indonesia Aziz, Faishal; Nugraha, Bayu; M I, Teuku Yan Waliana; Restu, Abigail; Barkah, Mochamad Nursiyam; Hadian, Mohamad Sapari Dwi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 3 (2024): JGEET Vol 09 No 03 : September (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.3.10917

Abstract

The sustainable exploitation of groundwater must be understood based on an understanding of geology and hydrogeological conditions. Water availability on small islands has limited reserves and is vulnerable to contamination. In addition, groundwater resources are vulnerable to decreasing groundwater levels in high abstraction without good management practices. Mansinam Island is one of the islands administratively located in Doreri Bay – Manokwari Regency for sustainable tourism development, which has an area of 410.97 Ha. The purpose of this research is to determine the condition and potential of groundwater in the Mansinam Island area. The geoelectric method is a technique that is widely used to characterize groundwater resources, which aims to identify the physical parameters of the subsoil and acquire information about its natural properties. The resistivity values obtained from the field measurement are thus interpreted and determined to be further correlated with geological characteristics as well as aquifer characteristics. On 11 geoelectric paths, good results are presented with a measurement depth of 20 – 23m. The northern area of the measurement on Mansinam Island has a resistivity value of 58.6 - 100Ωm for an aquifer layer containing groundwater potential with a groundwater level (MAT) of 12-20m and aquifer thickness of 3-8m. Meanwhile, the southern area of the geoelectric measurement has a resistivity value of 25.5-100Ωm for an aquifer layer containing groundwater potential, with a groundwater level of 6-12m and aquifer thickness of 8-16m. The southern segment of Mansinam Island has better potential for groundwater, with a relatively shallower depth and thicker aquifer than the northern segment.
Soil and Groundwater Contamination Based on Geological and Hydrogeological Investigation BARKAH, MOCHAMAD NURSIYAM; hadian, mohamad sapari dwi; Suganda, Bombom Rahmat; Iskandarsyah, Teuku Yan Waliyana Muda; Frini, Gisca Gia; Nadzif, Nor Farina
Journal of Geological Sciences and Applied Geology Vol 2, No 2 (2017): Journal of Geological Sciences and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v2i2.13447

Abstract

Water and environment are different things but they have a close relation each other. One of area in Indonesia Site ‘X’ (confidential site) has rapid development and many industries have built up their business here. The main issue is about the condition of soil and groundwater in this area are become contaminated in their waste disposal which is near with the resident area. Purposed of the study is to know how deep and extent the level of contamination in soil and groundwater. The investigations are using soil assessment, monitoring well installation, and aquifer testing. The soil assessment is using standard traditional drilling such as split spoon for subsurface drilling and sampling. Split spoon logging technique is more detail and provide good sampling for vertical or angle soil boring. Angle soil boring was done to know the detail soil sampling data near the resident area. Based on geological data, there are twelve soils boring (ten soils boring and two monitoring wells). The soil investigation observed as very fine grained to depths the recorded water table with coarser fine grained soil as depth. The indication of pure solvent was observed in three central location soil boring based on soil sampling. The PID (Photo-Ionization Detector) reading indicate that the soil sampling >1,000 ppm and with evident of solvent/hydrocarbon odour was indicating as impacted samples.  Based on hydrogeology data, there are eleven monitoring wells (two the newest MW and nine the existing MW). This research area has shallow aquifer system at depths 8.0-10.0 meter below groundwater surface as an unconfined aquifer layer. The monitoring well installation was observed five impacted monitoring wells. From one to five well, there is one well can looks clearly the sheen and has strong solvent based on laboratory in one monitoring well.Based on the data analysis, discovered that the research area was impacted. The collected data bring us to the next step that the research area should be remediated to make our environment clean or decreasing the level of contamination concentrate. Additionally, soil and groundwater contaminant levels have likely eliminated the previous remedial alternative suggestion of slow release oxygen and along with the soil geological conditions and severely reducing groundwater conditions, will make all remedial efforts challenging.
Fulfillment Of Water Needs With Rainwater Harvesting Concept at Campus Universitas Padjadjaran, Jatinangor, West Java SUGANDA, BOMBOM RACHMAT; Barkah, Mochamad Nursiyam; Iskandarsyah, Teuku Yan Waliyana Muda; Natasia, Nanda; Dwi Hadian, Mohamad Sapari
Journal of Geological Sciences and Applied Geology Vol 2, No 2 (2017): Journal of Geological Sciences and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v2i2.13449

Abstract

University of Padjadjaran (Unpad) as a means of education and research has need of water large quantity. Until now meeting the needs of water was carried out as a conventional namely the usage of groundwater. Through the passing of time, the constant use of groundwater and land use change in the catchment area may pose a risk of ground water crisis. Rainwater in the university environment has large potential with an average annual rainfall is 961.92 mm. The concept of rainwater harvesting by using potential water which be runoff will become the source of water to the fulfillment of a need. Unfortunately, rainwater that become runoff can contain bacteria and chemical contents that may be harmful to health. It is necessary for the screening process using filtration and membrane technology that can clean water and produce safe water to drink.
MANAGEMENT OF THE BATUR GEOPARK AS GEOLOGICAL CONSERVATION BASIS Hadian, Sapari Dwi; Suganda, Bombom Rachmat; Sunarie, Cecep Yandri; Barkah, Mochamad Nursiyam; W M Iskandarsyah, Teuku Yan; Bulqiah Ulfa, Ratu; Krishna Yuliawati, Ayu; Arfiansyah, Kurnia
Journal of Geological Sciences and Applied Geology Vol 6, No 1 (2022): Journal of Geological Science and Applied Geology
Publisher : Faculty of Geological Engineering, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/gsag.v6i1.45208

Abstract

The Batur Caldera is located in Kintamani District, Bangli Regency, Bali Province. The coordinates are 8 0 14.30' South Latitude, 115 0 22.30 East Longitude. The closest city distance is Bangli. The Batur Caldera contains the Batur Volcano and to the right is Lake Batur. Around it, in accordance with the beliefs of the local community, there are many temples, such as Besakih Temple and Pasar Agung Temple.Indonesia's success in making the Batur Caldera a Geopark recognized by UNESCO, thanks to the hard work of the Bangli Bali Regent/Pemda, Kemenparekraf, ESDM Geology Agency. In an effort to promote themselves and improve the quality of Batur Caldera geopark tourist destinations.Indonesia's wealth consisting of flora, fauna, cultural diversity, is a tourism asset that Indonesia already has that is able to realize love for national diversity as well as national unity. In addition, geological heritage (geoheritage) and sustainable geological diversity are the beginning of a geological park (geopark) towards nature-based tourism activities (geotourism). Geopark is the protection of cultural and natural heritage by emphasizing the potential between socio-economic and cultural development and the preservation of the natural environment. Geotourism as an earth heritage contains geological sites, which can produce science, scarcity, beauty, and education. Referring to conservation, education, and local economic growth.In realizing Geotourism in Indonesia, it is necessary to have the role of Tourism Stakeholders, namely a group of tourism actors who are responsible for implementing tourism that is responsible for preserving nature and is sustainable, including the Central Government, Regional Government, Private sector, and the Indonesian Tourism Promotion Agency.The government is supervised by the Ministry of Tourism and Creative Economy which is handed over to the Culture and Tourism Office in each region in the development of infrastructure, policies, regulations and promotions. In addition, the Geology Agency, as an institution that carries out geological conservation efforts in the context of sustainable development, is planning and preparing to organize the Geotourism. Besides that, there is the role of the community, several expert institutions in their fields to empower the community to be able to participate in the geotourism industry. Keyword : Geopark, Geotourism, Stakeholders, Batur Caldera
Menuju Desa Cerdas: Studi Kasus Pembangunan Desa Genteng di Sumedang, Jawa Barat, Indonesia: Towards Smart Village: A Case Study of Genteng Village Development in Sumedang, West Java, Indonesia Sri Fatimah; Mochamad Gunardi Judawinata; Mochamad Nursiyam Barkah; Lucyana Trimo; Yosini Deliana
Society Vol 8 No 2 (2020): Society
Publisher : Laboratorium Rekayasa Sosial, Jurusan Sosiologi, FISIP Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/society.v8i2.264

Abstract

This research aims to identify the prospects and challenges for implementing smart villages using a case study of Genteng Village in West Java, Indonesia, according to the sustainable development perspective and the enabler factors of socio-economic factors, village’s technology, and environmental aspects. This research uses a qualitative approach to assess the potencies and challenges from social, economic, environmental, and infrastructure perspectives. This research conducts a field survey with in-depth interviews and observation in Genteng Village, Sukasari Sub-district, Sumedang Regency, West Java Province to tap the information needed. Interviews with stakeholders were conducted with informants representing the rural stakeholders consisted of village official government, village local champion/leader, and farmer group representatives. Researcher involvement in nearly two years in regular visits and observations before this research has enriched and validated the information obtained. This research found prospective local social capital components and economic potencies to develop using the smart village framework. Environment and infrastructure are relatively still the challenges to be overcome towards the smart village. This research concludes that Genteng Village is on the right track, though early-stage to develop as a smart village. External factors, mainly information and communication technology, will be one of the main driving factors for optimism in implementing a smart village in Genteng Village.
KARAKTERISTIK AIR TANAH PADA AKIFER VULKANIK DI LERENG TENGGARA GUNUNG PULOSARI, PANDEGLANG, PROVINSI BANTEN Listiawan, Yudhi; Hadian, Mohamad Sapari Dwi; Muda Iskandarsyah, Teuku Yan Waliana; Muhammad, Azwar Satrya; Barkah, Mochamad Nursiyam
Bulletin of Scientific Contribution Vol 18, No 1 (2020): Bulletin of Scientific Contribution : GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (532.671 KB) | DOI: 10.24198/bsc.v18i1.27090

Abstract

Gunung Pulosari merupakan Gunung Api strato yang terletak di daerah Pandeglang Provinsi Banten. Daerah penelitian disusun oleh batuan vulkanik yang memiliki potensi air tanah yang besar. Masih sedikitnya ekploitasi air tanah, membuat daerah di sekitar Gunung Pulosari ini menarik untuk diteliti kondisi hidrogeologinya.Tujuan dari penelitian ini adalah menentukan karakteristik air tanah berdasarkan sifat fisik dan kimia air tanah serta kaitannya dengan kondisi geologi yang berkembang di daerah penelitian dengan melakukan pemetaan hidrogeologi. Dari hasil pemetaan hidrogeologi dan didapatkan sebanyak 13 lokasi pengamatan yang terdiri 10 mata air dan 3 sumur gali. Sifat fisik air menunjukan karakteristik yang homogen, nilai Daya Hantar Listrik (DHL) 60 sampai 190 μS/cm, Zat Padat Terlarut (ZPT) dari 20 sampai 90 mg/L, pH dari 4,7 sampai 8,2 dan suhu air dari 25 sampai 26,9 oC.  Sebanyak 5 sampel dilakukan uji kimia air tanah untuk di analisis fasies kimia air dengan diagram triliniear Piper.Dari hasil penelitian didapatkan fasies kimia air tanah di daerah penelitian didominasi oleh Ca:HCO3 dan satu lokasi (P-3) Ca.Na:HCO3. Hal ini mengindikasikan bahwa air tanah masih dipengaruhi oleh kondisi permukaan dan sistem alirannya masih bersifat lokal.
POTENSI AIR TANAH BERDASARKAN NERACA AIR PADA DAERAH ALIRAN SUNGAI CIKAO BAGIAN HULU, PURWAKARTA, JAWA BARAT Listiawan, Yudhi; Trisnadiansyah, Mochamad Ridfan; Hurruzia, Muhammad Fadhil; Nurfitriani, Nurfitriani; Barkah, Mochamad Nursiyam
Bulletin of Scientific Contribution Vol 18, No 3 (2020): Bulletin of Scientific Contribution : GEOLOGY
Publisher : Fakultas Teknik Geologi Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/bsc.v18i3.30896

Abstract

DAS Cikao Bagian Hulu meliputi Kecamatan Jatiluhur, Pasawahan, Pondoksalam, Bojong dan Darangdan secara administratif berada di Kabupaten Purwakarta. Setiap tahunnya di wilayah pada DAS ini meningkat jumlah penduduknya. Hal ini berbanding lurus dengan perubahan kondisi tata guna lahan yang menimbulkan permasalahan air pada musim kemarau maupun pada musim hujan, padahal daerah ini merupakan kawasan resapan air bagian utara Gunung Burangrang. Metode penelitian menggunakan metode neraca air Thornthwaite dengan modifikasi dari Todd untuk perhitungan debit run off. Parameter yang digunakan adalah data iklim yaitu curah hujan dan suhu, data tutupan lahan dan data kemiringan lereng. Rata-rata curah hujan 2009-2013 sebesar 3,141.068 mm/tahun. Nilai evapotranspitrasi sebesar 1,759.938 mm/tahun. Nilai debit run off di DAS Bagian Barat sebesar 29,285,386.16 m3/tahun, sedangkan di DAS Bagian Timur sebesar 18,399,878.27 m3/tahun. Kebutuhan air tanah pada DAS Bagian Barat sebesar 2,131,706.06 m3/tahun sedangkan pada DAS Bagian Timur sebesar 1,173,951.52 m3/tahun. Dari hasil perhitungan antara debit infiltrasi dan kebutuhan air, didapatkan bahwa cadangan air tanah pada DAS Bagian Barat sebesar 29,320,434.35 m3/tahun dan DAS Cikao Bagian Timur sebesar 30,218,614.12 m3/tahun. Kekritisan air tanah pada DAS Cikao tergolong kedalam kategori belum kritis terlihat masih banyaknya nilai cadangan air tanah. Namun seiring waktu berjalan, perubahan tata guna lahan dan meningkatnya pertumbuhan penduduk akan mempengaruhi ketersediaan air tanah sehingga perlu dilakukan pencegahan agar kondisi ini tidak memburuk nantinya. Perubahan tata guna lahan yang tidak mementingkan aspek lingkungan akan merusak daerah resapan dan mempengaruhi sumber air. Kebutuhan air tanah yang bertambah perlu diimbangin dengan ketersediaan air tanah yang terjaga.