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All Journal Journal of Degraded and Mining Lands Management Journal of Geoscience, Engineering, Environment, and Technology JAGAT (Jurnal Geografi Aplikasi dan Teknologi) Jurnal Abdidas Journal of Innovative and Creativity
L M Iradat Salihin
Universitas Halu Oleo
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Earth & Planetary Sciences Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Mathematics Physics Public Health Social Sciences Other

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 1 
Characteristics of Ultramafic Igneous Rock Ofiolite Complex in Asera District, North Konawe Regency Southeast Sulawesi Province, Indonesia Hasria; Erzam S. Hasan; Deniyatno; L M Iradat Salihin; Asdiwan
Journal of Geoscience, Engineering, Environment, and Technology Vol. 5 No. 3 (2020): JGEET Vol 05 No 03 : September (2020)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2020.5.3.4113

Abstract

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 (1971) and the origin of the magma / original rock formation environment based on Pearce (1977). 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. 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.
Analysis of Ultramafic Rocks Weathering Level Using the Magnetic Susceptibility in Konawe Regency, Southeast Sulawesi, Indonesia Jahidin; LO. Ngkoimani; LM. Iradat Salihin; Hasria; Erzam S. Hasan; Irfan Ido; Suryawan Asfar
Journal of Geoscience, Engineering, Environment, and Technology Vol. 5 No. 2 (2020): JGEET Vol 05 No 02 : June (2020)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (552.501 KB) | DOI: 10.25299/jgeet.2020.5.2.4247

Abstract

The Konawe region is part of the Sulawesi Southeast Arm ophiolite belt where ultramafic rocks are exposed in the form of dunite and peridotite. The formation of nickel deposits is closely related to the weathering process of ultramafic rocks as a source rock. Ultramafic rocks exposed to the surface will experience weathering which is influenced by many factors, including in the form of climate change, topography, and existing geological structures. The weathering process in the source rock can influence variations in chemical elements and magnetic properties in laterite soil profiles. For example, the chemical weathering might affect magnetic mineralogy and the physical weathering could affect granulometry as well as the quantity of magnetic minerals in the soil. Condition of weathering of ultramafic rocks (initial, moderate and advanced) can affect nickel content in laterite sediments. The weathering profile study of serpentine mineral is an indication of the lateralization process that occurs in ultramafic rocks and is carried out through petrographic analysis of thin cuts and polish cuts. Determination of weathering level like this is based on the level of weathering of the mineral serpentine. In this study, the determination of the weathering level of ultramafic rocks (initial, moderate, and continued) uses magnetic susceptibility parameter. A total of 232 ultramafic rock core samples obtained from 34 hand samples were taken from different places and weathered levels were analyzed. The results of the research have shown that the magnetic susceptibility of ultramafic rocks in the study area varies, from 580 x 10-6 SI to 4.724 x 10-6 SI. Based on the value of magnetic susceptibility, magnetic minerals contained in ultramafic rock samples are hematite and geotite minerals. This means that the weathering level of ultramafic rock samples is the continued weathering level. The level of continued weathering that occurs in ultramafic rocks in the study area produces nickel laterite deposits with a nickel content of 1.65 - 2.40% in the saprolite zone, 0.42% in the saprock zone, and 0.20 - 0.51% in the basic rock zone (bedrock).
Serpentinization Study On Ultramafic Rock at Morombo Area, Lasolo Islands District, North Konawe Regency, Southeast Sulawesi, Indonesia Hasria; Febiyanti; Masri; Ali Okto; Erzam S. Hasan; La Hamimu; Sawaludin; La Ode Muhammad Iradat Salihin; Wahab
Journal of Geoscience, Engineering, Environment, and Technology Vol. 7 No. 1 (2022): JGEET Vol 07 No 01 : March (2022)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2022.7.1.6643

Abstract

The research is in Morombo area, North Konawe Regency, Southeast Sulawesi. The purpose of this study was to determine the characteristics of serpentinized ultramafic rock and serpentine paragenesis. Research was conducted using field observations and laboratory analysis consisting of petrographic and geochemical analysis in the form of X-Ray Fluorosence (XRF). Petrographic analysis was carried out to identify the mineral content and textures in the rock and to determine the percentage of serpentine mineral presence. Both of these rocks are petrographically dominated by primary minerals olivine and clinopyroxine and secondary minerals namely lizardite, chrysotile, antiorite and opaque minerals. The XRF analysis was to determine the elements of Ni, Fe, Co, MgO, SiO2, CaO, Al2O3 and P in ultramafic rocks. The results of petrographic analysis show that serpentinized ultramafic rocks in the study area consist of serpentinized dunite and serpentinized peridotite. The formation of clay minerals in rocks does not occur because of the low serpentinization process in the rock. The results of XRF analysis showed that all samples in the bedrock showed Ni content above 0.2%. This is caused by the enrichment of Ni which is interpreted as a result of the serpentinization process along with the formation of lizardite in the rock. The serpentinization sub-processes in the study area comprised by hydration, serpentine recrystallization, and deserpentinization. Serpentine paragenesis is formed from the mid-oceanic ridge ocean floor, the orogenic phase to weathering. Substitution of Mg by Ni in ultramafic rocks will produce Ni-Serpentin. It is estimated that in the research area lizardite and chrysotile lizardite and chrysotile are the causes of Ni enrichment in bedrocks. The serpentinization characteristics of ultramafic rocks in the study area show a low to moderate level of serpentinization.
Morphotectonic Control of Land Movements at Wundulako Region, Kolaka Regency, Southeast Sulawesi Province, Indonesia Martono; Hasria; Suryawan Asfar; Muhammad Arba Azzaman; La Ode Ngkoimani; Ali Okto; La Hamimu; Irawati; Sawaludin; La Ode Muhammad Iradat Salihin; Wahab
Journal of Geoscience, Engineering, Environment, and Technology Vol. 7 No. 2 (2022): JGEET Vol 07 No 02 : June (2022)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2022.7.2.9235

Abstract

This research is located at Wundulako District, Kolaka Regency, Southeast Sulawesi Province. The purpose of this study are to determine the level of tectonic activity and the effect of tectonic activity on the land movement of the study area. Based on the DEM (Digital Elevation Model) analysis, geomorphology of the study area is dominated by mountains unit that indicate the influence of tectonic activity. Geomorphological aspects were analyzed to determine the tectonic classes in the study area such as watershed and non-watershed analysis. The results showed that, tectonic class of the study area is classified as very high and moderate tectonic class. The effect of tectonic class level on land movement in the study area shows a least correlation. This interprets that the cause of land movement at study area is not only influenced by tectonic factors but is also influenced by other factors such as rainfall, lithological conditions, geomorphology, earthquakes, and human activities. This shows that morphotectonic control has little effect on the land movements at Wundulako District, Kolaka Regency, Southeast Sulawesi Province, but is also influenced by other factors such as rainfall, lithological conditions, geomorphology, earthquakes, and human activities.
Analisis Persebaran Daerah Rawan Abrasi Pantai Di Pesisir Binongko, Kabupaten Wakatobi Hasnawati Hasnawati; Iradat Salihin; Ahmad Hidayat; Muliddin Muliddin; Noor Husna Khairisa
JAGAT (Jurnal Geografi Aplikasi dan Teknologi) Vol 6, No 2 (2022): JAGAT (Jurnal Geografi Aplikasi dan Teknologi)
Publisher : Halu Oleo University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jagat.v6i2.28248

Abstract

Abstrak: Abrasi pantai adalah proses pengikisan pantai oleh tenaga gelombang laut dan arus laut yang bersifat merusak dan menyebabkan perubahan garis pantai. Ada dua faktor yang menyebabkan terjadinya perubahan garis pantai. Pertama, faktor alami seperti gelombang laut, arus, angin, sedimentasi, topografi pesisir dan pasang surut. Sedangkan faktor kedua adalah faktor manusia (non-alami), seperti penambangan pasir, reklamasi pantai, dan pengerusakan vegetasi pantai. Penelitian ini bertujuan untuk: (1) mengetahui karakteristik pantai di Pesisir Binongko; (2) mengetahui sebaran daerah rawan abrasi pantai di pesisir Binongko. Metode analisis data yang digunakan dalam penelitian ini yaitu deskriptif kualitatif dengan menganalisis pengaruh karakteristik pantai di daerah yang rawan abrasi dengan teknik purposive sampling untuk melihat persebaran daerah rawan abrasi. Hasil penelitian ini antara lain: (1) Karakteristik pantai di Pesisir Binongko antara lain: terdapat lima pantai berpasir, empat pantai berbatu, dan satu pantai berlumpur. Selain itu, terdapat satu pantai pantai berbentuk cembung, empat pantai relatif datar, dan terdapat lima pantai cekung; (2) Persebaran daerah rawan abrasi pantai di Pesisir Binongko adalah sebagai berikut: Pada Kecamatan Binongko tahun 2010 sampai tahun 2020 abrasi terjadi seluas 15,907 ha dan akresi terjadi seluas 20,252 ha, sedangkan di Kecamatan Togo Binongko abrasi terjadi seluas 11,525 ha dan akresi terjadi seluas 7,304 ha. Kata kunci:     Karakteristik pantai, sebaran daerah rawan abrasi, Pesisir Pantai BinongkoAbstract: Coastal abrasion is the process of erosion of shore by the power waves and currents that are destructive and causing shoreline changes. There are two factors that cause shoreline changes. First, natural factors such as ocean waves, currents, wind, sedimentation, coastal topography and tides. The second factor is human factor (non-natural), such as sand mining, beach reclamation, and destruction of coastal vegetation. This study aims to: (1) determine the characteristics of the beach in the Binongko Coast; (2) determine the distribution of coastal abrasion-vulnerability areas on the Binongko Coast. Data in this research is analyzed by using descriptive qualitative method by analyzing the influence of coastal characteristics in areas where is vulnerable to abrasion with purposive sampling technique to see the distribution of vulnerable area of abrasion. The result softh is study are: (1) The characteristics of the beach on the Binongko Coast i.e. there are five beaches, four rocky shores, and one muddy shore. In addition, there is one convex beach, four relatively flat beaches, and five concave beaches; (2) In Binongko District from 2010 to 2020, abrasion occurred in an area of 15,907 acre and accretion occurred in an area of 20,252 acre, while in Togo Binongko District, abrasion occurred in an area of 11,525 acre and accretion occurred in an area of 7,304 acre.Keywords:     Beach characteristics, the distribution of vulnerable area of abrasion, Binongko Coast
Pemberdayaan mayarakat Desa Bendewuta menuju Desa Tangguh Bencana Iradat Salihin; Muliddin Muliddin; Firdaus Firdaus; Deniyatno Deniyatno; Al Rubaiyn
Jurnal Abdidas Vol. 3 No. 6 (2022): December Pages 944 - 1124
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/abdidas.v3i6.707

Abstract

Desa Bendewuta merupakan daerah yang dilanda bencana banjir hampir setiap tahun. Ancaman/bahaya yang ada ini bertemu dengan kondisi sosial-budaya, ekonomi, fisik, dan lingkungan yang rentan tanpa didukung oleh kapasitas pemerintah dan masyarakat yang baik, menjadikan ancaman tersebut dapat menjelma menjadi risiko bencana. Pengabdian ini bertujuan untuk mewujudkan ketanguhan desa Bendewuta dalam penghadapi bencana dengan cara pendampingan dan pemberdayaan desa menjadi desa tangguh bencana (Destana). Metode yang digunakan adalah Focused Group Discussion (Diskusi Kelompok Terarah) serta lokal latih yang megutamakan patisipasi pemerintah dan masyarakat desa. Kegiatan yang dilakukan berupa pengkajian risiko partisipatif, penguatan regulasi, penguatan pengelolaan risiko bencana, penguatan kualitas layanan dasar, dan penguatan sistem kesiapsiagaan untuk mendukung kegiatan tanggap darurat, rehabilitasi dan rekonstruksi paska bencana. Terlaksananya program-program dari tahapan kegiatan menunjukan bahwa Desa Bendewuta telah memenuhi indikator yang menggambarkan ketangguhan Desa terhadap bencana meliputi komponen legislasi, perencanaan, kelembagaan, pengembangan kapasitas, dan penyelenggaraan penanggulangan bencana. Hal ini menunjukan keberhasilan pemberdayaan desa Bendewuta menjadi Desa Tangguh bencana.
Analisis Spasial Tingkat Intrusi Air Laut Pada Sumur Bor Di Kota Kendari Sulpiana Sulpiana; Iradat Salihin; Fitra Saleh; Nurgiantoro Nurgiantoro; Al Firman
JAGAT (Jurnal Geografi Aplikasi dan Teknologi) Vol 7, No 1 (2023): JAGAT (Jurnal Geografi Aplikasi dan Teknologi)
Publisher : Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33772/jagat.v7i1.23984

Abstract

In simple terms, water is one of the natural resources that is very important and valuable for the survival of humans and other living things. The aims of this study are to: (1) Determine the distribution of the use of boreholes; (2) Knowing the level of sea water intrusion on ground water in Kendari City. The analytical methods used are: (1) Spatial interpolation analysis to create a map of the distribution of boreholes using the Arcgis 10.8 application; (2) Quality assessmentborehole water with seawater intrusion based on DHL values. The results of this study include: (1) The distribution of the use of drilled wells is spread throughout the Kendari City area with the highest distribution being in Poasia and Kambu Districts; (2) The groundwater condition of Kendari City has been very high intrusion with an area of 15,573,441.57 acre or 6%, these conditions are in Abeli District, Kendari District, West Kendari District, Mandonga District, Nambo District and Poasia District. The condition of groundwater with moderate intrusion level is 16% or 42.465,795.75 acre, the area with unintruded groundwater is in Baruga District.Keywords: Spatial Analysis, Seawater Intrusion, Deep well
Landslide hazard assessment and their application in land management in Kendari, Southeast Sulawesi Province, Indonesia La Ode Restele; Ahmad Hidayat; Fitra Saleh; L M Iradat Salihin
Journal of Degraded and Mining Lands Management Vol 10, No 3 (2023)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2023.103.4349

Abstract

Kendari is the capital of Southeast Sulawesi Province which is prone to landslides. Good land management needs to be done to minimize the impact of landslides. This study aimed to map the Kendari landslide hazard that can be used as an input into land management strategy, especially in vulnerable to the threat of landslides. The primary data used in this study were DEMNAS and Sentinel-2. Landslide detection was carried out using a Process Hierarchy Analysis (AHP) approach and validated by field surveys. Land capability analysis was based on landform analysis using land system data. Land management directions were carried out based on the integration of landslide hazard analysis with the ability of the land to be calibrated with actual land cover. The analysis showed that areas with high and very high landslide hazards reached 2654.09 ha (9.64%) and 4354.78 ha (15.82%). Capability class of VII is spread over structural hills to the north and south of Kendari with an area of 7,215.81 ha (26.21%). Land management in areas with very high landslide hazards and land capability class VII is to add cover crops on land that is not protected by a canopy. Cover crops that can be added are the grass type to minimize the danger of erosion that can trigger landslides.
Peran Pemerintah Desa Dalam Meminimalisir Risiko Bencana Alam Di Wilayah Pesisir (Studi Pada Desa Tombawatu) Wa Ode Srijuna Ramayana; L.M.Iradat Salihin; Al Rubayn
Journal of Innovative and Creativity Vol. 5 No. 3 (2025)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v5i3.3950

Abstract

Village governments as the vanguard of regional government should be able to demonstrate the best performance in carrying out government duties and functions. However, the Tombawatu Village Government has not been optimal in carrying out its duties and functions. As a result, there were casualties among the community which could have been anticipated if the village government had played a maximum role in reducing the risk of natural disasters. The problems in this research are analyzed using the concept of roles which are divided into three indicators, namely the role of government as a regulator, the role as a dynamic agent and the role as a facilitator. By using qualitative research methods and data collection techniques through interviews, observation, documentation, and literature studies. The results show that the role of the village government has not been optimal in minimizing disaster risks in Tombawatu Village. The direction and development policies of Tombawatu Village have not identified various internal and external organizational factors and have not been included in village regulations, the village government has not been able to mobilize the community to maintain various facilities that have been attempted by the village government, the formation of a disaster volunteer team has not been supported by the village revenue and expenditure budget. To overcome this, the village government needs to collaborate with universities in formulating development directions and policies, motivating and mobilizing the community to participate in maintaining existing facilities through active community participation in every stage of development, preparing regulations that support development directions and policies based on internal and external factors of the organization.
Co-Authors Ahmad Hidayat Al Firman Al Rubaiyn Al Rubayn Ali Okto Asdiwan Deniyatno, Deniyatno Erzam S. Hasan Erzam S. Hasan Febiyanti Firdaus Firdaus Fitra Saleh Fitra Saleh Hasnawati Hasnawati Hasria Hasria Hasria Ido, Irfan Irawati Irawati Jahidin Jahidin La Hamimu La Hamimu La Ode Ngkoimani LO. Ngkoimani Martono Masri Masri Muhammad Arba Azzaman Muliddin Noor Husna Khairisa Nurgiantoro, Nurgiantoro Restele, La Ode Sawaludin Sawaludin Sulpiana Sulpiana Suryawan Asfar Wahab Waode Srijuna Ramayana