Articles
<![CDATA[Analysis of Southern Segment of Sumatran Fault Monitoring Bench Mark as Preliminary Approach in Updating Earthquake Hazard Map ]]>
<![CDATA[Satrio Muhammad Alif]]>;
<![CDATA[Arliandy Pratama]]>
<![CDATA[ Journal of Science and Applicative Technology Vol 2 No 1 (2019): ICoSITeR Special Edition ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia ]]>
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DOI: 10.35472/281470
<![CDATA[Sumatran Fault is one of hazard located in Sumatra Island. Southern segment of Sumatran fault is one of sources of earthquakes in Lampung Province. Hazard map is used as consideration in developing region. The source of hazard comes from stress accumulation of crust which can be derived from movement of points in surface. The study of points or monitoring bench mark to accommodate more precise fault movement or slip and stress accumulation is important for sustainable development in Lampung Province. Tool used for analysis is geographic information system especially buffer analysis. Available monitoring bench mark is analysed so that each bench mark can be classified based on its contribution of fault movement based on distance from segment of current fault. High class bench marks are prioritized to be used as survey sites to monitor fault movement. The other analysis is analysis to obtain region that lack bench mark to monitor segment of current fault or even discover new fault which is branch of segment of current fault. The result of this research is there are four high class bench marks. 58.54% of total segments of 164.020 km long Sumatran fault in Lampung Province is segments with no monitoring bench marks. Three most possible district to build bench mark are Airhitam, Lemong, and Ngambur District.]]>
<![CDATA[Multipurpose cadastre for campus room appraisal ]]>
<![CDATA[Satrio Muhammad Alif]]>;
<![CDATA[Agung Pandi Nugroho]]>;
<![CDATA[Bambang Edhi Leksono]]>
<![CDATA[ Journal of Science and Applicative Technology Vol 3 No 1 (2019): Journal of Science and Applicative Technology August Chapter ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia ]]>
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DOI: 10.35472/jsat.v3i1.112
<![CDATA[The use of fundamental components of multipurpose cadastre which can be used as basic information and backbone for government policy with geographical information system as a tool are applied in this research method to appraisecampus room. The process to appraise of the facilities in a room begins with collecting facilities data which related to attribute data and defining room boundary which related to spatial data. Room appraisal are analysed by firstly calculate room valuebasedon facilities and activity hours.The method to calculate room value is comparison of quantity and functionality of facilities in every room. Thorough analysis is conducted to separate room value data containing human errors. The determination of which category (high, medium, low) every room fit in is based on distribution of value of every room value which is free of human errors. Room appraisal using this research method will lead to optimize every campus room especially low category room. This approach is also effective way to record number of rooms and facilities of campus comprehensively. Keywords: Multipurpose cadastre, Appraisal, Geographic Information System]]>
<![CDATA[Segmentasi Sesar Semangko Timur menggunakan Pengukuran Fotogrametri ]]>
<![CDATA[Satrio Muhammad Alif]]>;
<![CDATA[Muhamad Ilvan Ardiansyah]]>;
<![CDATA[Muhammad Ulin Nuha]]>;
<![CDATA[Een Lujainatul Isnaini]]>
<![CDATA[ JRST (Jurnal Riset Sains dan Teknologi) Volume 6 No. 1 Maret 2022: JRST ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Purwokerto ]]>
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DOI: 10.30595/jrst.v6i1.10769
<![CDATA[Sesar Semangko dengan panjang 65 km merupakan wilayah yang aktif secara tektonik dan terletak di Provinsi Lampung. Sesar Semangko terbagi menjadi dua: Sesar Semangko Barat dan Sesar Semangko Timur. Segmentasi sesar Semangko Timur terlihat terputus dari citra satelit dengan resolusi spasial 30 meter ketika melalui Kota Agung karena terjadi sedimentasi. Penelitian ini bertujuan mendapatkan segmentasi sesar Semangko Timur menggunakan pengukuran fotogrametri dengan resolusi spasial yang jauh lebih baik dibandingkan citra dari satelit. Data yang digunakan adalah data pengukuran fotogrametri dan Global Navigation Satellite System (GNSS) di wilayah dengan luas 100 hektar di lokasi terputusnya sesar Semangko Timur di Kota Agung, Tanggamus. Pengukuran fotogrametri dilakukan dengan menggunakan tinggi terbang sebesar 100 meter. Segmentasi sesar dilakukan dari DSM hasil pengolahan fotogrametri dengan mendefinisikan perbedaan nilai kelerengan di sesar Semangko Timur sebelum terputus dan diterapkan di lokasi penelitian dengan ciri serupa. Nilai kelerengan diperoleh dengan pembuatan kontur dari DSM. Kualitas produk DSM hasil pengukuran fotogrametri mencapai 12,4 cm untuk ketelitian horizontal dan 36 cm untuk ketelitian vertikal. Segmentasi sesar Semangko Timur yang tergambarkan dengan pengukuran fotogrametri yaitu sepanjang 100 meter di tutupan lahan persawahan.]]>
<![CDATA[Present-day Crustal Deformation in West Sumatra After Series of Sumatran Great Earthquake from 2004-2010 ]]>
<![CDATA[Satrio Muhammad Alif]]>;
<![CDATA[Jenny Melynda Siagian]]>;
<![CDATA[Ongky Anggara]]>
<![CDATA[ Journal of Earth and Marine Technology (JEMT) Vol 3, No 2 (2023) ]]>
Publisher : <![CDATA[Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba ]]>
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DOI: 10.31284/j.jemt.2023.v3i2.3733
<![CDATA[Present-day crustal deformation was an attempt to estimate earthquake potential, yet the presence of postseismic deformation should be carefully identified. Studying crustal deformation in West Sumatra has been important for this purpose since the series of Sumatran Great Earthquake from 2004-2010. This study utilized present-day GNSS data (2017-2021) and pre-2004 GNSS velocities to understand the present-day crustal deformation. Bernese 5.2 was used to process the GNSS data and linear regression was used to calculate present-day velocities. These velocities were transformed into an ITRF2000-based Sundaland plate reference frame and then the velocities were compared to pre-2004 velocities in the same reference frame. The present-day velocities were ranging from 28.4 mm/yr to 58.3 mm/yr in ITRF2014 and from 8.8 to 44.8 mm/yr in the Sundaland plate reference frame. This suggests West Sumatra was located on the Sumatra block of the Sundaland plate. The low velocity difference ( 11.7 mm/yr) with the random vector direction between present-day velocities and pre-2004 velocities shows that there is no postseismic deformation affecting West Sumatra. This proposes the utilization of present-day velocities for earthquake potential estimation in West Sumatra.]]>
<![CDATA[Pengaruh Waktu dan Jarak Tempuh ke Gerbang Tol terhadap Harga Tanah ]]>
<![CDATA[Satrio Muhammad Alif]]>;
<![CDATA[Anisa Rahma Dhanty]]>
<![CDATA[ Jurnal Manajemen Transportasi & Logistik (JMTRANSLOG) Vol 9, No 1 (2022): MARET ]]>
Publisher : <![CDATA[Institut Transportasi dan Logistik Trisakti ]]>
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DOI: 10.54324/j.mtl.v9i1.619
<![CDATA[One of the reasons for the construction of the Trans Sumatra toll road is the increase in traffic in Bandar Lampung. Travel time and distance to the three toll can affect land prices. The purpose of this study is to obtain the effect of time and distance to three toll gates on land prices. This study uses 11,904 travel time data from Google Maps with details of 124 villages to three toll roads for 8 weeks, with one week there are 2 data on weekdays and 2 data on weekends. The villages point is used to represent Bandar Lampung and is obtained from the midpoint of the kelurahan. The method to get the effect on land prices is multiple linear regression with least squares technique. The results are linearly interpolated to get the time area and distance traveled to the three toll gates. The farthest distance is the distance to the Natar toll gate and the closest distance is to the ITERA toll gate. The ITERA toll gate is the toll gate that most affects land prices in the city of Bandar Lampung, but the distance to the city center is the most influential factor in determining land prices.]]>
<![CDATA[Coherence Analysis of Sentinel-1A Images in Various Land Covers ]]>
<![CDATA[Satrio Muhammad Alif]]>;
<![CDATA[Ongky Anggara]]>;
<![CDATA[Vidiya Ristiana]]>
<![CDATA[ Jurnal Pendidikan Geografi Gea Vol 23, No 2 (2023) ]]>
Publisher : <![CDATA[Universitas Pendidikan Indonesia ]]>
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DOI: 10.17509/gea.v23i2.61258
<![CDATA[Coherence analysis is a valuable technique to assess the suitability and similarity of pixel pairs between two radar images taken at different times. In this study, we conducted coherence analysis on a series of Sentinel-1A images acquired between 2017 to 2022 in Palembang, Indonesia, encompassing various land covers. The analysis was conducted on different land covers, including urban areas, agricultural lands and natural terrains. The study aimed to identify land cover types with high coherence values Sentinel-1A images, as these could indicate stable or unchanged surfaces. The results show that land cover in Palembang which has high coherence is open land and built area. The average coherence value in the study area from 2017 to 2022 is ~0.2 to ~0.27, indicating relatively stable surfaces. This study is useful as initial consideration to utilize Sentinel-1A image for further research in earthquake and disaster analysis.]]>
<![CDATA[Karakteristik Geodinamika Periodik Di Provinsi Lampung Dari Pengukuran GNSS Kontinu Selama Satu Bulan Pada Tahun 2018 ]]>
<![CDATA[Satrio Muhammad Alif]]>;
<![CDATA[M Rizky]]>
<![CDATA[ Journal of Science, Technology, and Visual Culture Vol 2 No 1 (2022): Maret 2022 ]]>
Publisher : <![CDATA[Jurusan Teknologi Produksi dan Industri, Institut Teknologi Sumatera ]]>
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<![CDATA[Geodinamika periodik merupakan fenomena yang diamati untuk mempelajari perilaku bumi. GNSS dapat digunakan untuk mengamati fenomena periodik tersebut. Fenomena periodik diteliti karena memiliki kegunaan dalam hal sistem referensi dan menjadi koreksi agar dapat memperoleh pergerakan fenomena sekuler dan episodik yang lebih akurat. Penelitian ini bertujuan mengkaji karakteristik geodinamika periodik di Provinsi Lampung. Data GNSS yang digunakan pada penelitian ini adalah data kontinu selama satu bulan pada Januari 2018 pada titik TJKG di Natar dan titik KRUI di Krui yang berada pada pesisir yang menghadap samudra. Pengolahan data GNSS menghasilkan solusi koordinat titik untuk setiap menit dengan strategi Precise Point Positioning (PPP) dan metode absolut kinematik dengan tidak menggunakan model geodinamika periodik. Hasil pengolahan dilakukan analisis data 24 jam dan analisis data 31 hari, serta analisis pada domain frekuensi yang didapatkan dari hasil transformasi Fourier. Kekuatan fenomena periodik di KRUI lebih besar dibandingkan titik TJKG yang disebabkan posisi titik KRUI yang lebih dekat dengan samudra. Fenomena geodinamika periodik yang teridentifikasi pada kedua titik tersebut adalah fenomena diurnal dengan periode 24 jam, fenomena semidiurnal dengan periode 12 jam, dan fenomena fortnightly dengan periode 15 hari.]]>
<![CDATA[Analisis Deformasi di Lampung dan Selat Sunda berdasarkan Data GNSS tahun 2018 hingga 2021 ]]>
<![CDATA[Ongky Anggara]]>;
<![CDATA[Muhammad Ario Eko Rahadianto]]>;
<![CDATA[Satrio Muhammad Alif]]>;
<![CDATA[Een Lujainatul Isnaini]]>
<![CDATA[ Jurnal Fisika Unand Vol 13, No 5 (2024) ]]>
Publisher : <![CDATA[Universitas Andalas ]]>
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DOI: 10.25077/jfu.13.5.637-643.2024
<![CDATA[The Lampung Province and Sunda Strait have a seismic gap zone with the potential for major earthquakes in the future. This study analyzes the deformation occurring in this region using continuous Global Navigation Satellite System (GNSS) station data from Indonesia Continuously Operating Reference Station (InaCORS) and Sumatran GPS Array (SuGAr) from 2018 to 2021.5. The GNSS data was processed using the Bernese 5.2 scientific software, applying least squares for velocity changes and statistical tests to analyze significance. The data processing was carried out in two schemes: the first scheme covering 2018-2020, and the second covering 2019-2021. The results of the deformation analysis from 2018 to 2021, using two continuous GNSS data processing schemes, showed velocity changes relative to the Sundaland Plate ranging from ~2 mm/year to ~20 mm/year. In the eastern region of the Sumatra fault, the velocity changes were smaller, around ~5 mm/year, due to the minimal influence of tectonic activity. However, in the Sunda Strait region, the deformation was influenced by volcanic activity. The deformation occurring in Lampung Province and the Sunda Strait, based on GNSS velocity changes, significantly contributes to tectonic and volcanic activities.]]>
<![CDATA[Perbandingan Kualitas InaCORS dan SuGAr untuk Studi Pemantauan Deformasi Kerak di Sumatera ]]>
<![CDATA[Alif, Satrio Muhammad]]>;
<![CDATA[Siregar, Ribhan Nafiz]]>;
<![CDATA[Siburian, Yesica Tumim]]>;
<![CDATA[Anggara, Ongky]]>
<![CDATA[ Jurnal Geosains dan Teknologi Vol 6, No 3 (2023): November 2023 ]]>
Publisher : <![CDATA[Universitas Diponegoro ]]>
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DOI: 10.14710/jgt.6.3.2023.145-154
<![CDATA[Pemantauan deformasi kerak di Sumatera merupakan hal penting dalam pemahaman aktivitas tektonik dan potensi gempa bumi di wilayah tersebut. Tingginya aktivitas tektonik di Pulau Sumatera dapat dikuantifikasi dengan pengamatan stasiun kontinu. Penelitian ini membandingkan kualitas dua jaringan pengamatan stasiun kontinu yang tersedia di Pulau Sumatera yaitu Sumatran GPS Array (SuGAr) dan Indonesia Continuously Operating Reference Stations (InaCORS). Data stasiun kontinu yang digunakan, diamati dari 2020 hingga 2022, dan digunakan untuk menganalisis perubahan posisi permukaan dan deformasi kerak secara kontinu. Hasil perbandingan kedua jenis stasiun kontinu menunjukkan bahwa stasiun SuGAR dan stasiun InaCORS memiliki ketelitian yang baik dengan orde milimeter. Pada hasil komponen horizontal dan komponen vertikal, nilai ketelitian stasiun SuGAR lebih baik dibandingkan stasiun InaCORS. Kedua data merupakan sumber data yang penting untuk pemantauan deformasi kerak sehingga penggunaan kedua stasiun ini secara kombinasi dapat memberikan gambaran yang lebih komprehensif tentang pemantauan pergerakan deformasi kerak di Sumatera.]]>
<![CDATA[Present-day Crustal Deformation in West Sumatra After Series of Sumatran Great Earthquake from 2004-2010 ]]>
<![CDATA[Alif, Satrio Muhammad]]>;
<![CDATA[Ching, Kuo-En]]>;
<![CDATA[Siagian, Jenny Melynda]]>;
<![CDATA[Anggara, Ongky]]>
<![CDATA[ Journal of Earth and Marine Technology (JEMT) Vol 3, No 2 (2023) ]]>
Publisher : <![CDATA[Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba ]]>
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DOI: 10.31284/j.jemt.2023.v3i2.3733
<![CDATA[Present-day crustal deformation was an attempt to estimate earthquake potential, yet the presence of postseismic deformation should be carefully identified. Studying crustal deformation in West Sumatra has been important for this purpose since the series of Sumatran Great Earthquake from 2004-2010. This study utilized present-day GNSS data (2017-2021) and pre-2004 GNSS velocities to understand the present-day crustal deformation. Bernese 5.2 was used to process the GNSS data and linear regression was used to calculate present-day velocities. These velocities were transformed into an ITRF2000-based Sundaland plate reference frame and then the velocities were compared to pre-2004 velocities in the same reference frame. The present-day velocities were ranging from 28.4 mm/yr to 58.3 mm/yr in ITRF2014 and from 8.8 to 44.8 mm/yr in the Sundaland plate reference frame. This suggests West Sumatra was located on the Sumatra block of the Sundaland plate. The low velocity difference ( 11.7 mm/yr) with the random vector direction between present-day velocities and pre-2004 velocities shows that there is no postseismic deformation affecting West Sumatra. This proposes the utilization of present-day velocities for earthquake potential estimation in West Sumatra.]]>
