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Muh. Altin Massinai
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Departemen Geofisika, Fakultas Matematika dan Ilmu Pengetahuan Alam - Universitas Hasanuddin, Gedung MIPA, Kampus Unhas Tamalanrea - Jalan Perintis Kemerdekaan, Makassar - Sulawesi Selatan 90245
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Jurnal Geocelebes
Published by Universitas Hasanuddin
ISSN : 25795821     EISSN : 25795546     DOI : https://doi.org/10.20956/geocelebes.vxix.xxxxx
Core Subject : Science,
Earth & Planetary Sciences
Jurnal Geocelebes adalah jurnal peer-review yang dipublikasikan oleh Departemen Geofisika Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Hasanuddin. Jurnal ini terbit dua kali dalam setahun pada bulan April dan Oktober. Jurnal ini diperuntukkan sebagai sarana publikasi ilmiah di bidang geofisika baik teoritik maupun terapan. Artikel yang dimuat merupakan hasil penelitian yang orisinal, tinjauan (review) tentang kemajuan terkini dari suatu topik tertentu, studi kasus aplikasi geofisika atau pun resensi tentang perangkat lunak yang berkaitan dengan geofisika. Fokus dan cakupan topik yang dimuat dalam Jurnal Geocelebes: Geofisika eksplorasi Seismologi Vulkanologi Geofisika lingkungan Hidrometeorologi Oseanografi Dinamika pantai dan lautan Geoinformatika Mitigasi bencana geologi
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Geofisika
Articles 10 Documents
 1 
Search results for , issue "Vol. 6 No. 1: April 2022" : 10 Documents clear
Fault Interpretation Based on Similarity and Curvature Attributes in F3 Netherlands: Interpretasi Sesar Berdasarkan Atribut Similarity dan Curvature di Lapangan F3 Netherlands Nadea Arie Saragih; Faizar Farid; Juventa Juventa
JURNAL GEOCELEBES Vol. 6 No. 1: April 2022
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v6i1.14080

Abstract

F3 Southern North Sea Netherlands Basin field is an oil and gas field that has a complex fault structure and stratigraphy due to compressional tectonic movements during the Late Cretaceous and Tertiary eras. Information on the presence of faults can act as a trap or migration which then greatly affects oil and gas production and the injection process. A seismic attribute analysis of similarity and curvature was used to interpret the presence of fault structures to obtain information on the presence of subsurface faults in the F3 Netherlands field. The interpretation of the similarity attribute calculation results shows that the faults are marked with a minimum similarity value of 0.77, 0.68, and 0.66 at the time slices Z = 400ms, 1700ms, and 1800ms. The maximum value of most post-positive curvature represents the presence of an ascending fault block and the maximum value of the most negative curvature represents the presence of a descending fault block at the same time incision. Based on the similarity and curvature attribute calculations, it can be interpreted that the major faults in Top Zechstein to Upper Pliocene and the presence of successive faults on Top Zechstein to Base Lower Cretaceous are faults due to the formation of the Zechstein salt dome intrusion
Geology and Potential Flash Flood Vulnerability of Sungai Jernih Village and Surroundings, Pondok Tinggi District, Kerinci Regency, Jambi: Geologi dan Potensi Kerawanan Banjir Bandang Desa Sungai Jernih dan Sekitarnya, Kecamatan Pondok Tinggi, Kabupaten Kerinci, Jambi Viky Parmelian; Anggi Deliana Siregar; Yulia Morsa Said
JURNAL GEOCELEBES Vol. 6 No. 1: April 2022
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v6i1.14824

Abstract

Sungai Jernih Village and its surroundings have relatively steep slopes. Based on rainfall data for the last three years this area has moderate rainfall, with a tropical climate. In general, making the weathering level around it high and causing weathered soil/rock material conditions so that it is not strong retain the volume of water that is absorbed by the surface. The weathering can be carried away by water currents and flash floods. Pondok Tinggi sub-district has experienced flash floods, one of which was on May 13, 2017. The method used in this study is a direct mapping method, namely conducting field observations to map the distribution of lithology. Prior to field observations, analysis of secondary data obtained from literature studies and other sources was carried out to consider the results of field observations as a basic reference for research. Mapping results in the form of maps and parameter analysis using scoring overlaid with ArcGIS software. The low level of vulnerability with an area of ​​51.25% consists of 2 sub-districts, are in Pondok Tinggi District and Kumun District. The level of vulnerability is sufficient with an area of ​​25.39% consisting of 2 sub-districts are Sungai Bungkal District and Pondok Tinggi District. Then the highest vulnerability level with an area of ​​23.36% consists of 4 districts are Pesisir Bukit District, Sungai Bungkal District, Sungai Bungkal District Full and Pondok Tinggi District.
Identification of Alteration-Mineralization in Skarn Deposit System based on Time-Domain Induced Polarization Method Approach in Kasihan Area, Pacitan, East Java: Identifikasi Alterasi-Mineralisasi pada Sistem Endapan Skarn Berbasis Pendekatan Metode Time Domain Induced Polarization di Daerah Kasihan, Pacitan, Jawa Timur Taufik Seizarsyah; Ajimas Pascaning Setiahadiwibowo; Firdaus Maskuri; Sutarto Sutarto
JURNAL GEOCELEBES Vol. 6 No. 1: April 2022
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v6i1.17558

Abstract

This research was conducted in Kasihan, Pacitan, East Java with the aim of knowing the alteration zone and ore mineralization from mineral sediment systems based on the conductivity and resistivity of subsurface rocks in the study area. A geophysical method is needed to map area area area of the prospect of mineral deposits as well as mathematical models in the area research. One of the geophysical methods used in studies of mineral sediment cases is Time Domain Induced Polarization (TDIP). Measurement  of Time Domain Induced Polarization method done with configuration dipole-dipole which is arranged relatively straight northeast-southwest as much 2 tracks, with each track having the length of 260 m with an initial space of 20 m electrodes. Targets of the TDIP Method can describe subsurface conditions as far as 48 m. The position of mineralization in skarn deposits in the Time Domain Induced Polarization method at a depth of 25 m below the surface topography shown by high resistivity values >2000 Ωm and   >500 msec chargeability in dacite and limestone
Mapping of Seismic Vulnerability Potential for Earthquake Disaster Migitation in South Morotai: Pemetaan Potensi Kerentanan Seismik sebagai Mitigasi Bencana Gempa di Morotai Selatan Rohima Wahyu Ningrum; Risky Nuri Amelia; Suryani Taib; Rahim Achmad; Marwis Aswan
JURNAL GEOCELEBES Vol. 6 No. 1: April 2022
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v6i1.19150

Abstract

The geological condition of Morotai Island is influenced by small faults and tectonic activity from several major and minor plates that form the subduction zone, are the Pacific plate, the Philippine plate, the Sangihe plate, and the Moluccas Sea plate. This causes Morotai Island to have a high potential for earthquake hazards. South Morotai is the center of government, services, trade and economy on Morotai Island, and has a high potential for earthquakes. Therefore, an analysis of the distribution of seismic vulnerability values ​​in South Morotai was carried out based on mapping as a disaster mitigation effort in South Morotai. The microtremor method uses the H/V spectral ratio analysis technique to analyze the level of earthquake hazard based on the value of the seismic vulnerability index by considering local soil conditions. The ground frequency value (f0) obtained when measuring microtremor is between 0.6 Hz to 0.7 Hz. The amplitude value (A0) in the South Morotai area is around 1.9 – 5.2 times strengthening. The value of the seismic susceptibility index (Kg) in the study area is calculated based on the value of the basic frequency and amplitude with between 5.9 to 44.8. It was concluded that the distribution of a high Kg index and an earthquake prone area was in Darame Village, Muhajirin Village, and Wawama Village with a Kg value > 20. This area is composed of alluvium consisting of gravel, potential mud, and boulders, so it is classified into soft soil type. Less vulnerable areas are in Gotalamo Village, Daruba Pantai Village, and Darame Village
The Effect of the Rock Slope Material on the Compressive Strength Value in Malino, South Sulawesi Province: Pengaruh Material Penyusun Lereng Batuan terhadap Nilai Kuat Tekan di Daerah Malino Provinsi Sulawesi Selatan Dian Dwi Apriliyani Arsdin; Purwanto Purwanto; Muhammad Ramli
JURNAL GEOCELEBES Vol. 6 No. 1: April 2022
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v6i1.19309

Abstract

The research location is on the upstream slope of the Jeneberang River in Malino, Gowa Regency, South Sulawesi. This study aims to determine the types of rocks the slopes and to study the relationship between mineralogy characteristics and rock mechanical properties. Mineralogical characteristics analysis used petrographic analysis, XRD and XRF, while for the analysis of rock mechanical properties using uniaxial compressive strength analysis in this study used three types of samples taken on the same slope with the top, middle and bottom sampling points. The results of this study indicate that the rock types found on the slopes are andesite igneous rock types with the same main mineral types, the mineral is albit, analcime, quartz and leucite, while the secondary minerals found in each sample are different, on the slopes of sample A the secondary mineral is spodumene, sample B secondary mineral is garnet and sample C is palygorskite. The value of the results of testing the mechanical properties of each sample is also different, the correlation of the three uniaxial compressive strength test values to the mineral composition of rock samples shows that the correlation of quartz minerals to the compressive strength value and young's modulus has a fairly high correlation value of 0,934 and 0,9798, the mineral correlation value to the poisson ratio indicates that the mineral leucite has high correlation value compared to other minerals.
Geothermal Fluid Characterisics based on Geochemical Analysis of Hot Water in The Wawolesea Area, North Konawe Regency Southeast Sulawesi Province: Karakteristik Fluida Panas Bumi Berdasarkan Analisis Geokimia Air Panas Daerah Wawolesea Kabupaten Konawe Utara Sulawesi Tenggara Rizky Nurul Aulia; Irzal Nur; Asran Ilyas
JURNAL GEOCELEBES Vol. 6 No. 1: April 2022
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v6i1.19672

Abstract

North Konawe Regency is an area with interesting geothermal potential to be studied. The observed geothermal potential manifestation is located in the Wawolesea area through the collection and analysis of three hot spring samples. This study aims to determine the characteristics of geothermal fluids, namely the type and origin of the fluid by conducting geochemical analysis on samples of hot springs in the study area which further shows the content of elements and chemical compounds and their respective concentrations. The analysis in this research is Inductively Coupled Plasma-Atomic Emission Spectroscopy (ICP-AES) to obtain B and Li concentrations, conductivity meter to obtain Cl concentration, visible spectroscopy method for SO4 concentration and HCO3 concentration measured by acid-base titration. The results showed that the type of hot springs in the study area was included in the Chloride type with a percentage of 81.8156%-83.3976% with a pH value of 6.7-7.4 and a hot spring temperature of 50-54°C then plotted into trilinear diagram. The Cl-Li-B Ternanry diagram shows that the source of the fluid is in a reservoir that has the same rock structure and comes from the old hydrothermal system. Based on the results of the analysis of fluid characteristics obtained from the research, it can be concluded that the hot springs of the Wawolesea Region are an indicator of the presence of geothermal sources and further research is needed on the magnitude of the geothermal potential.
Biostratigraphy of Limestone based on Large Foraminifera in the Donggala Region, Central Sulawesi: Biostratigrafi Batugamping Berdasarkan Kandungan Foraminifera Besar di Daerah Donggala, Sulawesi Tengah Nurhikmah Supardi; Savira Aulia Rahmawati
JURNAL GEOCELEBES Vol. 6 No. 1: April 2022
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v6i1.19949

Abstract

The Sulawesi Molasa Formation is mostly composed of clastic and carbonate sediments which are widely distributed on the island of Sulawesi. Research on the Sulawesi Molasa Formation has been carried out by several researchers. However, there has been no detailed research on limestone biostratigraphy in the Donggala area, so it is very important to do it. This study aims to analyze the age and depositional environment of the Sulawesi Molasa Formation limestone based on the content of large foraminifera. The method used in data collection is measuring section. Field data collection was carried out by stratigraphic measurements including lithology identification, thickness and rock sampling. Laboratory observations were carried out using a polarizing microscope to observe a thin section of rock to determine the species of large foraminifera, their mineral and organic compositions. From the results of field observations found four types of lithology, namely wackestone, packstone, grainstone and floatstone. Based on the observation of large foraminifera fossils in a thin section of limestone in the study area, there are 24 species of large foraminifera identified. Among them, there are four index fossils, namely Miogypsinoides dehaarti (van der Vlerk), Paleomiogypsina bononensis (Matsumaru), Miogypsina sp, (Vaughan), Paleomiogypsina sp, and Miogypsinella sp, (Aquitanian). Based on age withdrawal and description of large foraminifera fossils, it is known that the limestones of the study area are Early Miocene-Middle Miocene age with the depositional environment in the lagoon zone to the forereef shelf
Characteristics of Ultramafik Rock and Nickel Laterite Distribution in Siuna Area, Pagimana, Banggai, Central Sulawesi: Karakteristik Batuan Ultramafik dan Penyebaran Nikel Laterit pada Daerah Siuna Kecamatan Pagimana Kabupaten Banggai, Sulawesi Tengah Riska Puspita; Ninasafitri Ninasafitri; Moh. Rizal Ente
JURNAL GEOCELEBES Vol. 6 No. 1: April 2022
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v6i1.18523

Abstract

The geology of Sulawesi Island, especially the eastern arm, is known to be composed of extensive ultramafic rocks with mineral deposit potential, including nickel laterite. The research area is located at PT. X Siuna, Pagimana District, Banggai Regency, Central Sulawesi Province. This study purpose to determine the characteristics of ultramafic rocks in the study area and to determine the distribution of laterite nickel and the relationship between ultramafik rock characteristics in the study area. The research methods used are field research methods and laboratory analysis (Petrography and XRF Analysis). Field research was conducted to collect field data in the form of rock samples and soil samples where there were 9 stations for rock samples and 4 stations for soil samples. Furthermore, laboratory analysis in the form of petrographic analysis will be carried out to determine the mineral composition of the rock, then XRF (X-Ray Flourescence) analysis is carried out to determine laterite nickel content which is then processed using ArcGIS 10.5 software, then interpolated using the Inverse Distance Weight (IDW) method. Based on the results of field and laboratory analysis, the rock characteristics in the study area have 3 rock types, namely serpentinized peridotite units, serpentinized dunite units and serpentinite units. The three rocks have been serpentinized with intermediate to strong  intensity, the constituent minerals have been dominated by serpentine, opaque mineral, pyroxine, and olivine. Based on IDW interpolation results, the distribution of nickel laterite in the western part of the study area has nickel (Ni) content of 0.50 – 1.2%, while in the southern – eastern part of the research area it has nickel (Ni) content of 0.20 – 0.5%
Classification of Majene Regency Landslide Prone Areas Using Geographic Information System and Storie Index: Klasifikasi Daerah Rawan Tanah Longsor Kabupaten Majene Menggunakan Sistem Informasi Geografis dan Metode Indeks Storie Indadzil A. P. Santoso; Aulia L. P. Wibowo; Cut L. Zulfa; Naufal N. Siregar; Rangga Adiprima Sudisman
JURNAL GEOCELEBES Vol. 6 No. 1: April 2022
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v6i1.19040

Abstract

On January 14, 2021, several villages in Majene Regency suffered landslides triggered by a M6.2 earthquake. The study’s aim is to use the Index Storie model approach, remote sensing data, and Geographic Information Systems (GIS) to map the distribution of landslide-prone areas as a mitigation basis in Majene Regency to reduce the potential for future landslide disasters. The level of landslide potential was determined based on slope conditions, soil types, rainfall, land use types, and potential earthquake risk. In general, morphological conditions in Majene Regency are dominated by slopes that are still covered in forests and receive relatively low rainfall, resulting in low landslide potential if seismic potential factors are not taken into account. Based on the results of an analysis that considers slope factors and potential seismic risks, the results of a map that illustrates the risk of landslide are quite high in several areas, are Malunda District, Ulumanda District, and Tubo Sendana District.
Analysis of Coal Quality on Mining Front and Ship Loading in East Kalimantan Province: Evaluasi Kualitas Batubara pada Front Penambangan dan Ship Loading di Provinsi Kalimantan Timur La Ode Muh Yazid Amsah; L.M. Hilman Kurnia; Anna Irada La Ode Malim
JURNAL GEOCELEBES Vol. 6 No. 1: April 2022
Publisher : Departemen Geofisika, FMIPA - Universitas Hasanuddin, Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/geocelebes.v6i1.19729

Abstract

This study aims to determine the quality of coal on the mining front and ship loading. The method used consists of literature study, sample collection and processing and data analysis using proximate analysis. The results of the analysis on the mining front obtained ash content 2.8%, total moisture 13.12%, volatile matter 39%, total sulfur 0.23%, fixed carbon 48%, calorie value 5.812 Kcal/Kg. On ship loading obtained ash content 3.89%, total moisture 14.15%, volatile matter 43.04%, fixed carbon 46%, total sulfur 0.25%, and calorie value 5.365 Kcal/Kg. The very different calorific value of 7.69% is influenced by changes in the total water content and ash content. This indicates a significant decline in coal quality.

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