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All Journal KURVATEK Jurnal Teras Fisika : Teori, Modeling, dan Aplikasi Fisika Sunan Kalijaga Journal of Physics
Rosyida, Hana
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Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Physics Social Sciences

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ANALYSIS OF THE EXISTENCE OF GEOTHERMAL MANIFESTATIONS USING FAULT FRACTURE DENSITY (FFD) IN TEMPURAN DISTRICT, MAGELANG REGENCY Salma khoirunnisa; Wibowo, Nugroho Budi; Rosyida, Hana; Khaerunnisa, Icha; Jannah, Dea Mutiara; Elsha C., Fathunajah; Mery S. A., Indar
KURVATEK Vol 9 No 1 (2024): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v9i1.4701

Abstract

Being in an active fire lane means that Indonesia has geothermal potential. The geothermal research location is in the Tempuran area, Magelang Regency. The method used is by using alignment in the National Digital Elevation Model (DEMNas) data and calculating it using the Fault Fracture Density (FFD) method, the result of which is a contour map. This research aims to identify the existence of geothermal manifestations with FFD values. The research results show that the FFD value in the Tempuran geothermal manifestation area varies between 0.09 - 1.80 km/km2. The FFD value shows that the Tempuran geothermal manifestation is in a low density zone. There is no direct correlation between the presence of geothermal manifestations and the FFD value. The Tempuran geothermal manifestation is thought to be related to geological formations composed of volcanic rock and related to an aquifer system, as well as faults that trend northwest-southeast.
Analisis kolerasi dan determinasi antara fault fracture density (FFD) dengan bencana tanah longsor kabupaten Simalungun, Sumatera Utara Rosyida, Hana; Wibowo, Nugroho Budi; Khaerunnisa, Icha; S. A., Indar Mery; Jannah, Dea Mutiara; C., Fathunajah Elsha; Khoirunnisa, Salma
Jurnal Teras Fisika: Teori, Modeling, dan Aplikasi Fisika Vol 6 No 2 (2023): Jurnal Teras Fisika: Teori, Modeling, dan Aplikasi Fisika
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jtf.2023.6.2.11118

Abstract

Kabupaten Simalungun, merupakan salah satu kabupaten di provinsi Sumatera Utara. Berbatasan dengan Kabupaten Toba Samosir dan Danau Toba di sebelah Selatan, daerah ini cukup rawan terhadap bencana tanah longsor. Penelitian ini bertujuan untuk mengetahui korelasi dan determinasi Fault Fracture Density dengan membandingkan jumlah kejadian tanah longsor pada kawasan penelitian. Dari kedua titik tanah longsor diketahui pada titik pertama (Bukit Dolok Simarbalatuk) banyak terjadi aktivitas tanah longsor dibandingkan dengan titik kedua (Jalan Josep Sinaga) yang hanya terjadi sekali. Berdasarkan hasil interpretasi korelasi dan determinasi antara Fault Fracture Density dengan jumlah kejadian tanah longsor didapatkan hubungan positif yang sangat rendah serta menunjukkan bagaimana nilai Fault Fracture Density dapat menjadi faktor banyaknya jumlah kejadian tanah longsor sebesar 2.7%. Curah hujan yang tinggi menjadi faktor yang cukup berpengaruh terhadap bencana tanah longsor pada kawasan penelitian. Kata kunci: Simalungun, Tanah Longsor, Fault Fracture Density , Kolerasi, Curah Hujan
Analisis indeks kerentanan seismik dengan metode mikrotremor pada zona longsor di dusun Bengle, desa Dlepih, kecamatan Tirtoyo, kabupaten Wonogiri Christalianingsih, Fathunajah Elsha; Sulya Aryani, Indar Mery; Khaerunnisa, Icha; Jannah, Dea Mutiara; Khoirunnisa, Salma; Rosyida, Hana
Jurnal Teras Fisika: Teori, Modeling, dan Aplikasi Fisika Vol 8 No 1 (2025): Jurnal Teras Fisika: Teori, Modeling, dan Aplikasi Fisika
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jtf.2025.8.1.12314

Abstract

Tanah Longsor merupakan bencana alam yang sering terjadi di wilayah Kabupaten Wonogiri. Kejadian tanah longsor pernah terjadi di Dusun Bengle, Kecamatan Tirtomoyo, Kabupaten Wonogiri. Tanah longsor tersebut mengakibatkan kerusakan rumah penduduk dan korban jiwa. Potensi bahaya tanah longsor dapat dianalisis dengan indeks kerentanan seismik (Kg). Penelitian ini bertujuan menganalisis frekuensi dominan (f0), faktor amplifikasi (A0) dan indeks kerentanan seismik (Kg) pada zona longsor menggunakan metode mikrotremor. Data akuisisi mikrotremor sebanyak 21 data pada zona longsoran. Pengolahan data mikrotremor menggunakan metode HVSR untuk menghasilkan kurva HVSR. Hasil penelitian menunjukkan bahwa nilai A0 memiliki rentang antara 0.99 hingga 7.55, nilai f0 dengan rentang antara 0.24 Hz hingga 11.01 Hz, dan nilai Kg dengan rentang nilai 0.13 hingga 36.50. Zona terdampak tanah longsor Dusun Bengle memiliki kesesuaian arah aliran material dengan sebaran nilai Kg yang tinggi. Hingga saat ini zona tersebut masih dijadikan sebagai kawasan pemukiman yang cukup padat, sehingga diharapkan penelitian ini mampu meningkatkan kewaspadaan masyarakat maupun pemerintah daerah akan adanya potensi dan ancaman bencana pada wilayah penelitian.
Physiographic Study of Java Island Based on EMAG2 v3 Data: Studi Fisiografi Pulau Jawa Berdasarkan Data EMAG2 v3 Yuniantari, Thava; Fikri Niyartama, Thaqibul; Zakaria, Muhammad Faizal; Rosyida, Hana
Sunan Kalijaga Journal of Physics Vol. 7 No. 1 (2025): Sunan Kalijaga Journal of Physics
Publisher : Prodi Fisika Fakultas Sains dan Teknologi UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/physics.v7i1.5638

Abstract

This study aims to analyze the physiography of Java Island based on the Earth Magnetic Anomaly Grid version 3 (EMAG2 v3) satellite data. The EMAG2 v3 dataset represents a global magnetic anomaly compilation acquired from satellite measurements provided by the National Oceanic and Atmospheric Administration (NOAA). The magnetic method, a geophysical technique that utilizes variations in the Earth’s magnetic field anomalies, was employed to delineate subsurface geological structures. The datasets used include administrative maps, regional geological maps, physiographic maps, and magnetic anomaly maps derived from EMAG2 v3 processing. Data processing was performed using the Geosoft Oasis Montaj software to generate the magnetic anomaly map of Java Island. The results indicate that the magnetic anomaly values across Java Island range from −300 nT to 450 nT, showing spatial variations among different physiographic zones. The northern part of Java exhibits low to moderate magnetic anomalies that correlate with alluvial deposits and young sedimentary formations, while the southern part displays moderate to high anomalies, reflecting the presence of volcanic rocks and intrusive bodies. This analysis demonstrates a strong correlation between magnetic anomaly variations and the lithological as well as structural characteristics of each physiographic zone. Therefore, EMAG2 v3 data can be effectively utilized to comprehensively interpret the regional geological framework of Java Island.
Analysis of Rock Magnetic Susceptibility in a Local Fault Zone at Sangkrek, Kulon Progo Regency Muaffi, Nadzif; Fikri Niyartama, Thaqibul; Budi Wibowo, Nugoho; Rosyida, Hana
Sunan Kalijaga Journal of Physics Vol. 7 No. 1 (2025): Sunan Kalijaga Journal of Physics
Publisher : Prodi Fisika Fakultas Sains dan Teknologi UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/physics.v7i1.5639

Abstract

This study aims to analyze the pattern of magnetic anomaly distribution and determine the rock magnetic susceptibility values as a basis for identifying a local fault zone in the Dusun Sangkrek area, Kokap District, Kulon Progo Regency. The geomagnetic method was employed, with data acquisition conducted at 60 observation points using a Proton Precession Magnetometer (PPM) G-856 at 100-meter intervals. The total magnetic field data were corrected for daily variations and the International Geomagnetic Reference Field (IGRF) to obtain the total magnetic anomaly (ΔT). The magnetic anomaly values range from –3,1 × 10² nT to 6,8 × 10² nT, where high anomalies are dominant in the northern part, composed mainly of andesitic rocks, while low anomalies are found in the western and southern parts, corresponding to the Sentolo and Alluvium Formations. Data processing stages include reduction to the pole (RTP), upward continuation, and two-dimensional (2D) modeling to characterize subsurface magnetic variations. The modeling results indicate that the magnetic susceptibility of rocks varies between 1,0 × 10⁻⁴ and 1,1 × 10⁻¹ SI, with higher values associated with andesite and brecciated andesite, and lower values corresponding to siltstone, claystone, and sandstone. The contrasting distribution of susceptibility along several profiles reveals sharp lithological changes, interpreted as indications of a local fault zone that influences the subsurface magnetic distribution.
Co-Authors Budi Wibowo, Nugoho C., Fathunajah Elsha Christalianingsih, Fathunajah Elsha Elsha C., Fathunajah Fikri Niyartama, Thaqibul Jannah, Dea Mutiara Khaerunnisa, Icha Khoirunnisa, Salma Mery S. A., Indar Muaffi, Nadzif Nugroho Budi Wibowo S. A., Indar Mery Salma khoirunnisa Sulya Aryani, Indar Mery Yuniantari, Thava Zakaria, Muhammad Faizal