Journal of Geoscience, Engineering, Environment, and Technology 2020-09-03T02:01:25+00:00 Husnul Kausarian, Ph.D. Open Journal Systems <p style="text-align: justify;"><strong>JGEET (Journal of Geoscience, Engineering, Environment, and Technology) </strong>&nbsp;<strong>(E-ISSN&nbsp;: 2541-5794, P-ISSN&nbsp;: 2503-216X )</strong> is a peer-reviewed and open access journal that publishes significant and important research from area of geological science, related with engineering, environment, and technology. We accept submission from all over the world on English language. Editorial Board&nbsp;members are prominent and active researchers in geological sciences and engineering fields who ensure efficient, fair, and constructive peer-review process. All accepted articles will be published freely and available to all readers with worldwide visibility and coverage. Our Journal already <a href="">indexed </a>in DOAJ, EBSCO, SINTA, GARUDA, Indonesia One Search, Crossref, Index Copernicus, OCLC, BASE, and University Libraries around the world.&nbsp;&nbsp;</p> <p style="text-align: justify;"><strong>ACCREDITED by Ministry of Research, Technology, and Higher Education of the Republic of Indonesia, <a title="Accreditation Certificate" href="" target="_blank" rel="noopener">No.30/E/KPT/2018</a>,&nbsp;October 24, 2018</strong></p> Front Matter JGEET Vol. 05 No. 03 2020 2020-09-02T07:56:00+00:00 JGEET (J. Geoscience Eng. Environ. Technol.) <p>-</p> 2020-06-29T00:00:00+00:00 Copyright (c) 2020 Journal of Geoscience, Engineering, Environment, and Technology Characteristics of Ultramafic Igneous Rock Ofiolite Complex in Asera District, North Konawe Regency Southeast Sulawesi Province 2020-09-03T02:01:25+00:00 Hasria Erzam S. Hasan Deniyatno L M Iradat Salihin Asdiwan <p>The research area is located in Asera District, North Konawe Regency, Southeast Sulawesi Province which has ultramafic rock lithology. The purpose of this study is to determine the characteristics of ultramafic igneous rocks using petrographic and geochemical analysis. Petrographic analysis aims to determine the types and abundance of minerals present so that rock types can be determined based on the classification of Travis (1955) and Streckeisen (1976). The geochemical analysis aims to determine the oxide/major element so that it can determine the type of magma based on the AFM classification according to Irvine and Baragar&nbsp; (1971) and the origin of the magma / original rock formation environment based on Pearce (1977).&nbsp; Petrographic analysis results showed that ultramafic rocks in the study area consisted of 2 types of rocks namely peridotite consisting of wherlit and lherzoite and serpentinite.&nbsp; The results of geochemical analysis indicate that the type of magma in the study area is thoellitic series and the origin of the magma/rock formation environment comes from the expansion of the oceanic floor or mid oceanig ridge (MOR) which is ultramafic.</p> 2020-08-18T01:13:47+00:00 Copyright (c) 2020 Journal of Geoscience, Engineering, Environment, and Technology Resistivity Models of Pantar Island Geothermal System East Nusa Tenggara, Indonesia 2020-09-02T07:56:00+00:00 Yoqi Ali Taufan I. Syafri D. Risdianto A. Zarkasyi T. Rahadinata W. Awaludin <p>The subsurface geological conditions of a geothermal system are vital objects to be considered in geothermal exploration. The Magnetotellurics survey was conducted to explore for geothermal potential in Pantar Island. This is to achieve deeper penetration compared to our previous study that adopted resistivity method to determine reservoir zones based on rock resistivity models. The difference in rock resistivity in geothermal systems provides subsurface geological information in the form of low resistivity that associated the clay cap zones (high conductive), the medium resistivity zones associated with the reservoir zones, and high resistivity associated with a heat source. The results of 2D and 3D models from MT data show that the low resistivity value (&lt;20Ωm) as a clay cover zones, this layer from the surface to -1000 meters. Medium resistivity values ​​(20-100 Ωm) starting from depths -1000 meters to -2000 meters associated with reservoirs zones, high resistivity values (&gt; 200 Ωm) starting from depths of -2000 meters are considered as heat source from the Pantar geothermal system.</p> 2020-08-18T01:45:16+00:00 Copyright (c) 2020 Journal of Geoscience, Engineering, Environment, and Technology Analysis of Shoreline Shift using Satellite Imagery near Makassar City 2020-09-02T07:56:00+00:00 Rian Amukti Arif Seno Adji Syamsuri Ruslan <p>Shoreline shift have occurred in the Coastal region of Makassar City in recent years due to abrasion and accretion. Spatial temporal feature extraction of the Makassar City Region has been carried out using remote sensing techniques &nbsp;withRadiometri, &nbsp;Geometric Corrections and Composite Imagein the Landsat image dataset in 2009 and 2019. This study aims to analyze shoreline shift near Makassar City with remote sensing technology using Landsat imagery data, based on multi-temporal data with visual and digital analysis techniques between 2009 and 2019. This research contributes to local and central government as baseline data (data base) in making decisions for handling coastal areas. The results showed that the length of the Makassar City coastline without including the coastline length of the islands separated from land in a row that is equal to 37.79 km in 2009. While in 2019 there was a significant change that is 49.82 km. This shows the addition of a coastline of 12.03 km in the span of 10 years. These changes are mainly caused by anthropogenic factors, namely the construction of the pier / port and the reclamation and hydro-oceanographic factors, namely waves, currents and tides.</p> 2020-08-18T02:05:22+00:00 Copyright (c) 2020 Journal of Geoscience, Engineering, Environment, and Technology The Permeability of Granite Weathering Soil in Tanjungpinang, Bintan Island, Indonesia 2020-09-03T00:32:04+00:00 Fery Erawan Emi Sukiyah Johanes Hutabarat Adjat Sudradjat <p>Bintan Island is a part of Riau Islands Province. On this island, the capital city is Tanjungpinang. The compliance of public facilities such as landfill waste is a priority in this city. Landfill design that suitable in this area is a sanitary landfill system. The soil layer uses to cover the waste in this landfill system. The closure did gradually avoid the disruption of waste processing. The type of soil for its landfill cover has to be able to control the leachate. It controlled by the permeability of the soil.</p> <p>The methods used in this study are the analysis of the physical and mechanical properties of soil. Rock and soil samples are obtained systematically through trenching. Sampling-based on changes in physical properties of soil that reflect its mechanical properties. A probabilistic approach used to solve the problems and to get accurate results.</p> <p>The geomorphology of the study area divided into four units. They are very flat terrain, flat terrain, slightly steep hills, and steep hills. The sample used for the study is undisturbed soil. Analysis of the physical and mechanical properties of soil shows the types of soil, such as SW, GM, MH-OH, and CH. However, MH is the most dominant type of soil. Each of the soil types represents a certain degree of weathering. The degree of weathering in the study area varies from the III degree to VI degrees. Rocks are weathering form clay mineral, which compiles the soil. Clay mineral in the soil layer is varied from quartz, illite, kaolinite, gibbsite, goethite, and hematite—the impact of the swelling of clay. The swelling of clay in the study area ranged from low to high. The properties and composition of the soil are affected by the permeability value.</p> 2020-08-18T02:57:24+00:00 Copyright (c) 2020 Journal of Geoscience, Engineering, Environment, and Technology Identification of Clay Mineral Content Using Spectral Gamma Ray on Y1 Well in Karawang Area, West Java, Indonesia. 2020-09-02T07:56:00+00:00 Rahmat Catur Wibowo Alia Puja Pertiwi Suci Kurniati <p>Northwest Java Basin (NWJB) is one of the proven hydrocarbon basins in Indonesia. The scope of this paper will focus onthe shales and sandstone interval within Y1 well in Karawang area, NWJB, Indonesia.A cored interval from Y1 well was chosen for an investigation of the clay minerology for the gamma-ray activity and with the purpose of determining how the Spectral Natural Gamma (SNG) log could be used as an indicator of source rock and reservoir quality. The Th/U as a redox indicator is used to assert that the shales are of anoxic conditions of shallow marine environments. Despite the relatively high insoluble Th values (60-74.15) ppm, the presence of U in substantial amounts, which only occurs in reducing conditions where it is preserved as a lower insoluble valence (U<sup>4+</sup>) explains for the low Th/U values ranging between (5.8-7.1) ppm/ppm. The overall Th/U value of the evaluated shales remain less than 25, where Th/U &lt;25 is suggestive of marine sediments, whereas Th/U &lt;4 is indicative of marine black shales of reducing conditions. Although no linear relationship was found between clay content and K, Th, or U, the K content characteristic three discrete reservoir characteristic (RC). The RC-I has predicted a matrix-supported texture with the highest K signal, illite and illitised kaolinite are roughly equal in importance as source of K. The RC-II has predicted a grain-supported texture with intermediate K content. K-feldspar, mica and illite as the main sources. The RC-III has predicted have a low K content with grain-supported texture and most of the K is hosted in feldspar. Overall, the laboratory measurements appear to be applicable to the log data, and, using SEM or XRD, the detail facies subdivision can be extended throughout the source rock and reservoir section based on the SNG log.</p> 2020-08-18T03:27:36+00:00 Copyright (c) 2020 Journal of Geoscience, Engineering, Environment, and Technology Association between Surface Air Temperature And Land Use On The Campus Scale 2020-09-02T07:56:01+00:00 Satrio Muhammad Alif Erwin Yosua Adam Irwansyah Fauzi Bambang Edhi Leksono <p>The increasing trend of global temperature is related to the land use change in the form of urbanization. The impact of land use change to surface air temperature in Indonesia especially in smaller scope in Indonesia have not researched yet. The study area is located on newly built campus and the development of land use change inside campus can be managed carefully. This research aim is to determine which land use affecting high-temperature by using multiple linear regression method with least square approach so that temperature increase can be controlled in which some land uses must be preserved in urbanization. Land use data is interpreted from the photo map of 275 hectare campus. Temperature data is measured by using the digital thermometer three times a day. The method idea is to obtain distinctive contribution of every land use to every temperature measurement point. The contribution follows the inverse distance weighted concept. Surface air temperature measurement points are located with 150 meter interval and centroids of land use polygons are used for association calculation. Temperature measurement shows values between 25.5<sup>o</sup>C and 35.4<sup>o</sup>C. Land use with more anthropogenic activities and rubber plantation are the top contributors to high surface air temperature within a day. In the non-built-up land use category, water body increases the temperature in the daytime. Anthropogenic activities and vegetation density within land use is the main factor in increasing the surface air temperature so that it is suggested to plant farm-like vegetation around every built-up land use.</p> 2020-08-26T02:31:20+00:00 Copyright (c) 2020 Journal of Geoscience, Engineering, Environment, and Technology Groundwater Quality Assessment for Drinking Purpose Based on Physicochemical Analysis in Teluk Nilap Area, Rokan Hilir, Riau, Indonesia. 2020-09-02T07:56:01+00:00 Arief Yandra Putra Fitri Mairizki <p>Groundwater is water resource that widely used for domestic purposes, including for drinking. However, the industrial and population growth causes the quality and quantity of groundwater to decline. In this case, the quality of drinking water in Indonesia must meet the requirements according to Health Minister Regulation No.492/MENKES/PER/IV/2010. This study aims are to determine the quality of groundwater in the research area based on physicochemical parameters and its evaluation for drinking water. Groundwater samples were taken from dug wells in Teluk Nilap area, Rokan Hilir, Riau. Groundwater samples have temperature average 30oC, TDS average 312,5 mg/L and pH average 5,6. Groundwater contain sulfate and nitrate with average value 48,8 mg/L and 11,86 mg/L, respectively. Groundwater water also have iron and lead metal above the permitted standard with average value 2,57 mg/L and 0,022 mg/L. Groundwater in the study is not recommended as drinking water.</p> 2020-08-26T02:38:51+00:00 Copyright (c) 2020 Journal of Geoscience, Engineering, Environment, and Technology Evaluation Study Of Walkability Index In Central Business District (CBD) Area, Pekanbaru City 2020-09-02T07:56:01+00:00 Muhammad Sofwan Mira Hafizhah Tanjung <p>Walkable cities emphasize cities with high walkability values, where walkability can be defined as the degree to which the environment can be pedestrian friendly. Walkable city is considered to be able to increase people's desire to walk so that it can make the environment more humanistic and can also help realize one of the objectives of sustainable transportation. The value of walkability can be viewed from the perspective of the urban form (macro level) of an area. The Central Business District (CBD)&nbsp; Pekanbaru City walkability index assessment uses the WAI IPEN Project model that measures the form of the Urban Form. The walkability assessment process in the Pekanbaru Kota Sub-District Area (CBD) divides the study area into 6 grids. The analysis shows that there are 4 grids that have a negative walkability value. In the analysis of the walkability value pattern it can be seen that the area dominated by office activities has a lower walkability value compared to the area that has mixed land use.</p> 2020-09-01T07:39:51+00:00 Copyright (c) 2020 Journal of Geoscience, Engineering, Environment, and Technology The assessment of landslides disaster mitigation in Java Island, Indonesia: a review 2020-09-02T07:56:01+00:00 Akhmad Zamroni Ayu Candra Kurniati Haris Nur Eka Prasetya <p>The frequency of landslides and the fact that a large number of people live in the landslides-prone areas lead to a high death toll in Java Island, Indonesia – over 1,112 people in the period between 1999 and 2005. Indonesian National Disaster Management Agency (Badan Nasional Penanggulangan Bencana [BNPB]) reported 2,766 landslides that occurred in Java from 2014 to 2019, with 662 deaths. From its state, it looks as if Indonesia 's disaster mitigation is still weak. It is very essential to a deep understanding of landslides disaster mitigation weakness in Indonesia with the approach of governments, researchers, and local communities action. This research is a review of landslides disaster mitigation in Java Island with the approach of governments, researchers, and local communities action. Furthermore, the purpose of this study is to highlight the driving forces of landslides disaster mitigation in Java Island, Indonesia.</p> <p>From the assessment of each stakeholder (government, researchers, and local communities), the driving forces of landslides disaster mitigation in Java Island are the central government has commanding disaster management activities to local governments. However, the implementation of landslides disaster mitigation at the regional level has some obstacles such as the lack of residential development planning.Many landslide research results have only become scientific papers but the landslides-prone areas have not been fully paid attention by the local government such as the absence of landslide danger warning signs.In addition, the level of preparedness and awareness among local communities is not constant at any given time. Usually, community preparedness levels can be high following a disaster. It is likely, however, to diminish over time.</p> 2020-08-18T02:24:25+00:00 Copyright (c) 2020 Journal of Geoscience, Engineering, Environment, and Technology Back matter JGEET Vol 05 No 03 2020 2020-09-02T07:56:01+00:00 JGEET (J. Geoscience Eng. Environ. Technol.) <p>-</p> 2020-09-01T00:00:00+00:00 Copyright (c) 2020 Journal of Geoscience, Engineering, Environment, and Technology