Article Per Year (5 Year)
p-Index From 2020 - 2025
2.062
P-Index
This Author published in this journals
All Journal Jurnal IPTEK Jurnal Penelitian Sains Buletin Sumber Daya Geologi Jambura Geoscience Review Journal of Earth and Marine Technology (JEMT) BIOVALENTIA: Biological Research Journal
Harnani, Harnani
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Medicine & Pharmacology Physics Transportation

Published : 14 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 14 Documents
Search

 1   2 
EVALUATION OF LOCAL RECLAMATION DATA FOR SUSTAINIBILITY INFRASTUCTURE FACILITIES (CASE STUDY OF KLAWAS ZONE AND SUBAN ZONE IN POST COAL MINING AIR LAYU TANJUNG ENIM) Gumanti, Johnnedy; Sutriyono, Edy; Salni, Salni; Harnani, Harnani
BIOVALENTIA: Biological Research Journal Vol. 4 No. 1 (2018)
Publisher : Biology Department, Faculty of Mathematics and Natural Sciences, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (764.813 KB) | DOI: 10.24233/BIOV.4.1.2018.109

Abstract

This study identifies and analyzes the biophysical and environmental aspects of the environment, potentials and constraints, and then evaluates the post-mining reclamation land use that will be used for Other Use Areas (APL), the Residential Infrastructure Facility. Based on the Mining Closure Plan (RPT) on the utilization of former coal mine land at Air Laya Tanjung Enim, Klawas reclamation land use plan for Resettlement Facility and Zoning Infrastructures (Zone 2) while Suban reclamation land use plan for Productive Research area. Analysis in this research are scoring, SWOT and map overlay such as area function analysis and land suitability analysis based on physical condition of existing land. The result of this research is land suitability level for Residential Infrastructure Facility in Klawas, suitable land equal to 12% or 38 ha while 98% unfit or 258,7 ha from total area of 277,8 ha. Terms of land suitability in Klawas research area including Marginal (S3) with total scores of 80. where climate condition support with average temperature 24oC and rainfall 23,93 - 27,87 mm / day, slope of flat slope approaching water level river 0 - 3%, complex geological structure there are anticline in the form of fault and fracture, soil type Alluvial and Latosol, there are many aquifer with shallow depth to medium, there is vulnerability of geological disaster in the form of mass movement of soil / rock, flood, erosion and radiation exposure TENORM of moderate intensity. The results of land use evaluation for the Klawas reclamation area are more suitable for Freshwater Fishery Cultivation area than for Residential Infrastructure Facility area. Land tenure rate for Residential Infrastructure Facility in Suban, suitable land equal to 76 % or 237 ha while unsuitable 24% or 105 ha of total area of 342 ha. Conditions of land suitability in Suban's research area include Match (S2) with a total scores of 130. Climatic conditions support the average air temperature of 24°C and rainfall of 23.93 - 27.87 mm / day, the slope of flat slope is 3 - 8% there is no anticline structure in the form of fault, Andosol and Podsolic soil types, there is a shallow shallow depth of aquifer, no geological disaster vulnerability and low intensity TENORM radiation exposure. The results of the land-use evaluation for the Suban reclamation area are more suitable for the Residential Infrastructure area rather than for Productive Research area.
Use of Spatial Data in Mapping Landslide Prone Areas in Luhurjaya and Surrounding Areas, Lebak Regency, Banten Province Abiyyu, Muhammad Dimas Al; Harnani, Harnani
Journal of Earth and Marine Technology (JEMT) Vol 4, No 2 (2024)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2024.v4i2.5262

Abstract

Landslides are a natural process that occurs in a natural landscape on earth which can cause various environmental damage and can cause loss of life. An increase in the risk of landslides can be caused by uncontrolled land conversion due to the increasing population so that land development is necessary. The research was conducted in Luhurjaya and surrounding areas, Cipanas District, Lebak Regency, Banten with an area of 9 x 9 km. The spatial integration method was used to map landslide-prone zones using a scoring and weighting method, using five parameters, namely slope, rainfall, lineament density, rock type, and NDVI. Those five parameters are then overlaid to form a landslide susceptibility map. As a result of analyzing the research area based on these five parameters, it was found that this area has five slope classes, one rainfall class, five lineament density classes, three rock type classes, and four NDVI classes. After all the datas are scored and weighed, it was found that this research area can be classified to three zones, namely low landslide susceptibility zone, medium landslide susceptibility zone, and high landslide susceptibility zone. From the results of this analysis, disaster mitigation should be needed that can affect the community in the Lebak Regency area, Banten Province, namely in the form of providing provisions in the form of knowledge to the community regarding disaster management which is useful for minimizing the risk of the consequences of landslides
Remote Sensing Techniques for Identifying Flood Prone Areas Using the Vegetation Index, Water Index, and Simple Additive Weighting Methods for Mekarsari Areas, Cianjur Regency, West Java Harnani, Harnani; Savira, Putri
Journal of Earth and Marine Technology (JEMT) Vol 4, No 1 (2023)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2023.v4i1.4564

Abstract

Flood is a natural disaster with an intensity that often occurs in cities on a scale with excess water discharge in some areas. This research was conducted to determine the risk of flooding in Mekarsari Village and its surroundings, Cianjur Regency, West Java. (According to InaRisk, 2022) Risk and danger of flooding Moderate – High. This study uses data for the entire year 2022. With several parameters used in this study including land cover, rainfall, soil type, slope, NDVI, NDWI and SAVI. Simple Additive Weighting or weighting for each parameter with different results, according to the classification of each of these parameters. The results of this weighting will become a Flood Hazard Risk Map which was previously the result of overlay and intersection of land cover map, rainfall map, soil type map, slope map, Normalized Difference Vegetation Index map, Normalized Difference Water Index map and Soil Adjusted Vegetation Index map. On the Flood Disaster Risk Map there are five categories of vulnerability levels Not Hazardous, Less Hazardous, Moderate, Hazardous and Very Hazardous. The cause of the risk of flooding in the study area is that most of the land use is diverted to rice fields, plantations, dry agricultural land and settlements so that the lack of vacant land causes low absorption of rainwater and also steep slopes and high elevations which also cause rainwater to be stored in the lowlands. settlements) with moderate to high rainfall intensity every month. There is also a lack of education for the community to mitigate the risk of flood disasters so that waste management and waterways in settlements are inadequate and well managed.
Geotourism Assessment using the M-GAM method (Modified Geosite Assessment Model) Sawahlunto Region, West Sumatra Dezilia, Dieny; Harnani, Harnani
Journal of Earth and Marine Technology (JEMT) Vol 4, No 1 (2023)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2023.v4i1.4881

Abstract

The geological setting in the area is a strong attraction for natural tourism. The Sawahlunto Geopark area is one of the Geoparks located in West Sumatra Province which has a variety of geological sites. This area meets the criteria that make it a potential Geopark. The purpose of this analysis is to evaluate the potential of geotourism and use this assessment as a basis for developing geotourism in the Sawahlunto and surrounding geotourism areas. This analytical study was carried out using the M-GAM (Modified Geosite Assessment Model) method. In the study process, research methods were carried out using questionnaire data based on 27 indicators from the M-GAM method.M-GAM method has 27 indicators consisting of main and additional values that will be used as a questionnaire which will produce quantitative results. The 27 indicators contain several geotourism assessments, including scientific value, aesthetic value, protection value, functional value, and tourism value of a geosite. The maximum score that can be obtained by a geosite that has all the perfect criteria in 27 indicators will get a main score of 12 and an additional score of 15. 7 geosites will be assessed with results, namely Batu Runciang (8.17 and 7.62), Serpih Bakelok (6.35 and 7.72), Tabiang Tinggi (6.81 and 8.14) and Puncak Cemara (8.19 and 8.41), Stone Garden (6.37 and 7.96), Batu Gantuang Cave (3.91 and 6.07) and Kubang Waterfall (3.48 and 6.48). Referring to the results of the Sawahlunto geosite assessment, it was concluded that the Batu Runciang and Puncak Cemara Geosites had a high value in terms of main values compared to the other 5 geosites. Meanwhile, for additional value, Tabiang Tinggi and Puncak Cemara have sufficient value compared to the other 5 Geosites. This is because geosites with low value still lack various things such as facilities and promotions. Efforts that can be made are to build facilities at several geosites that still experience a lack of public facilities. Apart from that, promotion on social media is also very helpful in introducing geosites to the public.
Analisis Pengaruh Densitas dan Orientasi Lineament terhadap Kerentanan Longsor di Daerah Gumaytalang, Kabupaten Lahat, Sumatera Selatan Berbasis Digital Elevation Model Thallalefa, Muhammad Daffa; Harnani, Harnani
Jurnal Penelitian Sains Vol 27, No 1 (2025)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56064/jps.v27i1.1121

Abstract

Lineament atau kelurusan adalah fitur linear pada permukaan bumi yang menunjukkan zona kelemahan struktural. Penelitian ini bertujuan untuk menganalisis hubungan antara lineament dan potensi terjadinya longsor di Kecamatan Gumaytalang, Kabupaten Lahat, Sumatera Selatan. Analisis dilakukan dengan menggunakan data DEMNAS dan perangkat lunak PCI Geomatica 2016. Hasil penelitian menunjukkan bahwa terdapat korelasi yang signifikan antara densitas lineament dan potensi terjadinya longsor. Area penelitian didominasi oleh struktur kekar yang berorientasi timur laut-barat daya, mengindikasikan pengaruh tegasan kompresi utama. Kombinasi antara struktur kekar, kemiringan lereng yang curam, dan permeabilitas batuan yang tinggi menciptakan kondisi yang sangat rentan terhadap gerakan massa. Analisis geomorfologi menunjukkan bahwa daerah penelitian memiliki morfologi yang heterogen, dengan dominasi perbukitan denudasional. Keberadaan longsoran dan aktivitas denudasi mengindikasikan bahwa proses erosi telah berlangsung intensif. Hasil penelitian ini menyimpulkan bahwa lineament dapat dijadikan sebagai indikator potensi terjadinya longsor. Area dengan densitas lineament tinggi cenderung memiliki potensi longsor yang lebih besar. Penelitian ini memberikan kontribusi penting dalam pemahaman mekanisme longsor dan dapat digunakan sebagai dasar untuk mitigasi bencana di daerah yang memiliki kondisi geologi serupa.
ASAL USUL FLUIDA MANIFESTASI PANAS BUMI DAN ESTIMASI TEMPERATUR RESERVOIR DENGAN PENDEKATAN ANALISIS ISOTOP PADA DAERAH DANAU RANAU, OGAN KOMERING ULU (OKU) SELATAN, SUMATERA SELATAN: ORIGIN OF GEOTHERMAL MANIFESTATION FLUID AND DETERMINATION OF RESERVOIR TEMPERATURE USING ISOTOPE ANALYSIS APPROACH IN THE LAKE RANAU AREA, SOUTH OGAN KOMERING ULU (OKU), SOUTH SUMATERA Ibrahim, Mochamad Malik; Harnani, Harnani; Jati, Stevanus Nalendra; Abiyyu, Rayhan Khairunnan
Buletin Sumber Daya Geologi Vol 19 No 3 (2024): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v19i3.467

Abstract

The geothermal potential of the Lake Ranau area comes from the remains of magmatic activity from Mount Seminung. The geothermal manifestation in this area is in the form of hot springs which are thought to arise through geological structures. The existence of geothermal fluid manifestations is very interesting to research, especially regarding the origin and estimation of reservoir temperature using the δ18O and δ2H isotope composition approach. It is important to know the origin of fluid manifestations to determine the potential of geothermal systems from surface manifestations fluid related to magmatic, evaporation or rock interactions. This research method uses isotope analysis to determine the origin of geothermal fluid manifestations and isotope geothermometer to estimate reservoir temperature. Isotope sampling in geothermal manifestation fluids in Kota Batu Village was 3 samples and Lombok Village was 3 samples. The results of isotope analysis on the relationship graph between δ18O and δ2H show that all isotope samples in geothermal manifestation fluids come from meteoric water. The local meteoric water line value equation has a difference in the deuterium excess (DE) value compared to the global meteoric water line value equation. This change in DE value is due to the interaction and mixing process between geothermal fluid and rock (connate water) with the source of evaporation and precipitation from Lake Ranau. The results of isotope geothermometer calculations based on the isotope fractionation factor, it is estimated that the reservoir temperature is around ± 270 0C. Reservoir temperature estimates show that all isotope samples in geothermal manifestation fluids are classified as high temperatures.
Rock Mass Classification Using RMR and GSI for Slope Stability at PT Bukit Asam, Tanjung Enim Sabila, Dona; Harnani, Harnani; Qistan, Muhammad Hafits; Sidiq, Muhammad
Jambura Geoscience Review Vol 7, No 2 (2025): Jambura Geoscience Review (JGEOSREV)
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jgeosrev.v7i2.32492

Abstract

Evaluating slope stability in tropical open-pit mining environments remains a technical challenge due to the complex geological formations and the influence of dynamic climatic conditions, particularly intense rainfall and high humidity. This study aims to assess the effectiveness of integrating the Rock Mass Rating (RMR) system and the Geological Strength Index (GSI) for classifying rock mass quality and predicting slope stability in such settings. Field data were collected from interbedded claystone and sandstone formations through systematic mapping of RMR parameters, including Rock Quality Designation (RQD), spacing and condition of discontinuities, groundwater presence, and uniaxial compressive strength. Complementary evaluations using GSI focused on block structure, joint surface conditions, and weathering characteristics. The RMR analysis classified the rock mass as Class III (Fair Rock), indicating moderate stability. However, the system’s static framework and limited responsiveness to rapid hydrogeological changes posed constraints in capturing the actual slope behavior. In contrast, GSI, with values ranging between 40 and 50, offered enhanced interpretive depth by incorporating qualitative assessments of lithological heterogeneity and structural anisotropy. The adaptability of GSI proved critical in environments where visual and textural indicators of degradation fluctuate spatially and temporally. The combined application of RMR and GSI enabled a more accurate, context-sensitive geotechnical evaluation, bridging the gap between empirical rigidity and field-based complexity. This integrated methodology supports more reliable engineering decisions and enhances the predictive capacity for slope failures in tropical geological settings, emphasizing the necessity for multidimensional classification tools in geotechnical practice.
Characteristic and Provenance of Talang Akar Formation Sandstone, Sukamoro Area, South Sumatera Rochmana, Yogie Zulkurnia; Idarwati, Idarwati; Harnani, Harnani; Mayasari, Elisabet Dwi
Jurnal IPTEK Vol 27, No 1 (2023)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2023.v27i1.4434

Abstract

Sukamoro area, Banyuasin Regency, South Sumatera, was the research location. This investigation focuses on the origin of sandstones from the Talang Akar Formation. In the area of investigation, sandstones are widely dispersed and exhibit a variety of properties. Due to the abundance of sandstones found and their high resistance and physical compactness, an analysis of the original rock can be carried out. Generally, the material that makes up sandstone comes from the previous rock. This investigation was undertaken using a descriptive-analytical methodology to determine the origin of the rock. The collected surface data is subsequently petrographically examined. After determining the composition of the constituent minerals, a provenance analysis was conducted to determine that the Talang Akar Formation's sandstones originated from the Magmatic Arc. Furthermore, the Talang Akar sandstone reveals the origin of the Recycle Orogen. Thus, it is considered that the sandstones of the Talang Akar Formation have seen many uplift episodes as a result of tectonic activity, almost to the point where they have experienced an increase in the maturity or stability of their continental block provenances
Paleosalinitas Batupasir gampingan, Batulempung, dan Ba-tupasir Formasi Lemau Dengan Metode Analisa Klaster, Daerah Muara Simpur Dan Sekitarnya, Kecamatan Ulu Talo, Kabupaten Seluma, Bengkulu. Putricia, Innaka; Harnani, Harnani
Jurnal Penelitian Sains Vol 26, No 2 (2024)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56064/jps.v26i2.982

Abstract

Foraminifera merupakan organisme yang hidup secara akuatik, uniseluler, memiliki satu atau lebih kamar-kamar yang terpisah satu sama lainnya yang dipisahkan oleh sekat-sekat (septa) yang ditembusi oleh lubang-lubang halus (foramen). Penelitian bertujuan untuk menentukan paleosalinitas berdasarkan kelimpahan foraminifera bentonik kecil pada Sampel batuan formasi Lemau di Daerah Muara Simpur dan sekitarnya, Bengkulu. Data sampel yang digunakan sebanyak 6 sampel batuan sedimen dari hasil penelitian lapangan yang dilakukan. Metode yang digunakan dalam penelitian ini yaitu analisis kuantitatif berdasarkan dengan kumpulan kelimpahan foraminifera bentonik kecil dengan menghitung jumlah individu serta genus setiap sampel dan genus dominansi terpilih. Hasil penelitian menyatakan bahwa paleosalinitas daerah penelitian relatif berada pada kondisi salinitas air normal 32-40% namum sempat berubah dalam kondisi salinitas rendah < 32%. Perubahan paleosalinitas pada kala pengendapan Formasi  Lemau dapat diakibatkan oleh faktor perbedaan kedalaman, perubahan muka air laut, serta kondisi iklim dan kondisi tektonik Indonesia.
Analisis Kestabilan Lereng Berdasarkan Klasifikasi Massa Batuan dengan Metode Rock Mass Rating (RMR) di PT. Bukit Asam, Tbk. Sumatera Selatan. Aulia, Zhahra; Harnani, Harnani; Utamaputra, Radian Gatra
Jurnal Penelitian Sains Vol 26, No 1 (2024)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56064/jps.v26i1.966

Abstract

Dalam melaksanakan kegiatan penambangan tambang terbuka ini menuntut kestabilan lereng pada bukaan tambangnya. Lereng-lereng tersebut perlu dianalisis kestabilannya, baik pada tahapan perancangan, tahapan penambangan, maupun tahap pasca tambang untuk mencegah bahaya longsor di waktu-waktu yang akan datang karena menyangkut keselamatan kerja, keamanan peralatan serta keberlangsungan produksi. Secara administratif, lokasi penelitian terletak PIT ZA, Desa Sirah Pulau, Kecamatan Merapi Timur, Kabupaten Lahat, Provinsi Sumatera Selatan. Kondisi lereng tambang akan mengalami banyak perubahan pada tambang batubara yang sudah beroperasi cukup lama seperti kondisi fisik, kimia, maupun mekanik batuan yang berimbas pada kestabilan lerengnya. Kualitas massa batuan menjadi salah satu parameter dalam stabilitas lerengyang bertujuan untuk mengidentifikasi parameter-parameter penting yang mempengaruhi perilaku massa batuan. Metode penelitian menjadi dua yaitu pengumpulan data primer menghasilkan rock quality designation, kondisi diskontinuitas, kondisi air tanah dan data sekunder menghasilkan nilai kuat tekan batuan utuh. Dalam menentukan Rock Mass Rating (RMR) dipengaruhi oleh kuat tekan batuan utuh, rock quality designation, kondisi diskontinuitas, dan kondisi air tanah. Pengelompokan dan pembagian kualitas massa batuan pada daerah penelitian mengacu pada klasifikasi Bieneawski (1989). Pembagian kualitas massa batuan pada daerah penelitian terbagi menjadi 2 kelas yaitu Kelas III termasuk kedalam klasifikasi massa batuan Fair Rock yaitu dimana frekuensi kekar tergolong cukup besar pada pembentukan kualitas massa batuan pada lokasi tersebut dan kelas IV termasuk kedalam kualitas massa batuan Good Rock yaitu dimana frekuensi kekar tergolong cukup kecil pada pembentukan kualitas massa batuan pada lokasi tersebut. Diskontinuitas merupakan salah satu faktor kestabilan lereng, oleh karena itu harus melakukan tindakan seperti menghilangkan pembebanan oleh alat berat pada titik diskontinuitas dan merubah geometri lerengnya.
Co-Authors Abiyyu, Muhammad Dimas Al Abiyyu, Rayhan Khairunnan Ananda, Ricky Aulia, Zhahra Dezilia, Dieny Edy Sutriyono Gumanti, Johnnedy Ibrahim, Mochamad Malik Idarwati Idarwati Khoiri, Muhammad Faris Mayasari, Elisabet Dwi Muhammad Sidiq Nyana M, Newche Brighita Prihandayani, Anggun Putricia, Innaka Qistan, Muhammad Hafits Sabila, Dona Salni Savira, Putri Stevanus Nalendra Jati Thallalefa, Muhammad Daffa Utamaputra, Radian Gatra Yogie Zulkurnia Rochmana