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Fitrianingtyas, Rahmawati
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Astronomy Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Health Professions Materials Science & Nanotechnology Physics

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Temporal-Spatial Variations Analysis of Surface Temperature in Kalimantan Region for The Period of 2010 - 2020 Fitrianingtyas, Rahmawati; Palupi, Indriati Retno
Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat Vol 21, No 1 (2024): Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v21i1.17507

Abstract

Surface temperature information is important to study because it affects other climate parameters and has an impact on various sectors. This study aims to analyze the temporal and spatial variations of maximum surface temperature on Kalimantan Region during the period 2010 to 2020. The data used is Surface Maximum Temperature (SMT) in the form of a 0.5o x 0.5o grid from the Climate Prediction Center (CPC) NOAA PCL. The results of the temporal analysis showed that the highest monthly SMT values occurred in May (32.00o C) and September (31.75o C). While the lowest monthly SMT values were found in January (30.88o C) and July (31.40o C).  The results of the annual SMT trend analysis show that the surface temperature in the Kalimantan Region has increased at an average rate of 0.03°C per year. This value is higher than the increase in global surface temperature (~0.02°C per year). Based on the results of spatial analysis, it was known that the distribution of SMT on Kalimantan Region tends to be stable in the range of 25o C to 35o C throughout the year. Spatial analysis of SMT in 2011 showed that low values (25o - 31o C) dominated South Kalimantan Province , while high values (33°C - 35°C) dominated West Kalimantan Province. The results of the 2019 SMT spatial analysis revealed a similar pattern to 2011. However, there was a significant increase in temperature compared to 2011, especially in the high SMT values observed in West Kalimantan and East Kalimantan Provinces.
Analisis Euler Deconvolution untuk Mengidentifikasi Patahan Lembang Berdasarkan Data Gravitasi GGMplus Aziz, Khafidh Nur; Fitrianingtyas, Rahmawati; Darmawan, Denny; Laatifah, Laatifah
Jurnal Geofisika Vol 21 No 2 (2023): Jurnal Geofisika
Publisher : Himpunan Ahli Geofisika Indonesia (HAGI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36435/jgf.v21i2.558

Abstract

Sesar Lembang mengalami pergerakan 6 mm/tahun dan memiliki prediksi gempa dengan magnitudo 6,8. Tujuan dari penelitian ini adalah mengetahui korelasi data gravitasi GGMplus terhadap data gravitasi TOPEX dan pola sebaran Anomali Bouger Lengkap (ABL) GGMplus, mengidentifikasi posisi dan kedalaman sumber anomali Sesar Lembang berdasarkan analisis Euler Deconvolution, dan memodelkan struktur bawah permukaan Sesar Lembang. Penelitian ini menggunakan data GGMplus dan TOPEX. Data gravity disturbance GGMplus akan digunakan dalam perhitungan koreksi terrain untuk mendapatkan nilai ABL, pemisahan anomali, analisis Euler Deconvolution, dan pemodelan 2D. Hasil penelitian menunjukkan korelasi data gravitasi GGMplus dan TOPEX sebesar 0,871. Nilai ABL daerah penelitian dalam rentang 8 mGal hingga 37 mGal. Kedalaman sumber anomali Sesar Lembang dalam rentang 820 m – 1096 m dan memiliki 4 formasi batuan, Formasi Cilanang, Formasi dari hasil gunung api tua, Tufa Berbatuapung, dan Formasi Tufa Pasir. Formasi yang mendominasi adalah Formasi Cilanang dengan densitas 2,52 – 2,83 dan bersesuaian dengan batu gamping.
Identifikasi Struktur Bawah Permukaan Area Tempuran, Magelang, Jawa Tengah dengan Metode Gravitasi GGMplus Mustofa, Nisrina Hasna; Widiyansari, Roma; Aziz, Khafidh Nur; Darmawan, Denny; Maharani, Laras Anindita; Zainfa, Aqheela Aphrodita; Fitrianingtyas, Rahmawati; Maulita, Ika
Progressive Physics Journal Vol. 6 No. 2 (2025): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/054gd652

Abstract

This research was conducted in the Tempuran geothermal manifestation area, Magelang, Central Java, specifically in a location with indications of fault structure. The study aims to identify the subsurface structural conditions associated with the fault through the distribution pattern of gravity anomalies. This research used gravity method, with the data are gravity disturbance from GGMplus with a resolution of approximately 220 meters. The gravity disturbance data were processed to obtain Complete Bouguer Anomaly (CBA) data, which were then subjected to upward continuation and forward modeling. The CBA results reveal a high anomaly in the southern part of the study area, extending southwestward, which correlates with the Menoreh Mountains. A low anomaly is found in the northeastern part of the area, corresponding to a lowland region. The 2D modeling results indicate that the study area is composed of rocks with densities ranging from 1.00 g/cm³ to 1.60 g/cm³, interpreted as alluvium; 1.75 g/cm³ to 2.73 g/cm³, interpreted as the Kebobutak Formation; and 2.50 g/cm³, interpreted as deposits from theyoung Sumbing Volcano. Additionally, rocks with densities ranging from 2.40 g/cm³ to 2.77 g/cm³ are interpreted as andesitic intrusions, while rocks with a density of 2.83 g/cm³ are interpreted as dacitic intrusions. The presence of a normal fault is identified within the Kebobutak Formation and the andesitic intrusion, overlain by alluvial deposits.
Analisis Struktur Bawah Permukaan Daerah Panas Bumi Pacitan Berdasarkan Data Gravitasi GGMPlus Widiyansari, Roma; Fatimah, Siti; Risti, Fidel; Hikmah, Nur; Darmawan, Denny; Nur Aziz, Khafidh; Fitrianingtyas, Rahmawati
Progressive Physics Journal Vol. 6 No. 2 (2025): Progressive Physics Journal
Publisher : Program Studi Fisika, Jurusan Fisika, FMIPA, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/3rdp3n60

Abstract

This study aims to identify the subsurface structure of the geothermal system in the Pacitan area, East Java, using gravity methods based on GGMPlus data. The analysis procedures include terrain correction to obtain the Complete Bouguer Anomaly (CBA), separation of regional and local anomalies through upward continuation, as well as two-dimensional (2D) modeling and Second Vertical Derivative (SVD) analysis to identify fault structure. The CBA values in the study area range from 107 to 115.5 mGal, where high anomalies correlate with volcanic breccia rocks and highlands, while low anomalies indicate the presence of sandstone in lowland areas. Geothermal manifestations in the form of hot springs exhibit gravity anomalies of approximately 110.5–111.5 mGal and are situated in the north of the fault in a northwest–southeast direction. The 2D modeling results reveal the presence of reservoir rocks consisting of sandstone and clay with densities ranging from 1.79 to 2.20 g/cm³, and lava rocks with densities of 2.80–2.90 g/cm³ acting as cap rocks. SVD analysis indicates the existence of a normal fault directly associated with geothermal fluid pathways. This study demonstrates that the GGMPlus gravity method is effective for preliminary exploration of geothermal systems in potential areas such as Pacitan.
Co-Authors Aziz, Khafidh Nur Denny Darmawan Ika Maulita Indriati Retno Palupi, Indriati Retno Laatifah, Laatifah Maharani, Laras Anindita Mustofa, Nisrina Hasna Nur Aziz, Khafidh Nur Hikmah Risti, Fidel Siti Fatimah Widiyansari, Roma Zainfa, Aqheela Aphrodita