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All Journal Journal of Geoscience, Engineering, Environment, and Technology SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan DIFFRACTION: Journal for Physics Education and Applied Physics Engineering Science Letter
Wae, Konsenius Wiran
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Relocation Study of Flores Sea Hypocenter (Mw = 7.3) Based on Single Station Estimation Using ObsPy Khusnani, Azmi; Anggraini, Ade; Jufriansah, Adi; Zulfakriza, Zulfakriza; Pramudya, Yudhiakto; Margiono; Wae, Konsenius Wiran
Journal of Geoscience, Engineering, Environment, and Technology Vol. 9 No. 2 (2024): JGEET Vol 09 No 02 : June (2024)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2024.9.2.14503

Abstract

One area in Indonesia that is prone to disasters is the Flores Sea area, which has the potential for earthquakes to trigger tsunamis. This is due to the location of Flores, which is in a subduction zone that originates from the collision of the Indo-Australian (South) and Eurasian plates. Inaccuracies in earthquake locations are influenced by differences in residual travel time values, mathematical solutions to location problems, and inaccuracies in the seismic velocity model used. The accuracy of determining the hypocenter of an earthquake influences the location of the earthquake source, which will later be used as a reference in appropriate earthquake disaster mitigation planning. Based on this, an analysis of earthquake hypocenter data is needed, so it is important to carry out research. This research aims to relocate the hypocenter using ObsPy with a single station. The results obtained show that the Python package, namely ObsPy, can carry out data retrieval commands through filtering, detrending, normalisation, and determining data request parameters, such as the start and end times of the desired data, location, network, and data type. This research contributes to the field of seismology because the process of determining the hypocenter requires a relatively short time. Apart from that, the accuracy obtained also provides accurate values.
An Analytical Study of Suspension Bridge Collapse Based on the Characteristics of the Eigen Values Jufriansah, Adi; Pramudya, Yudhiakto; Lazwardi, Ahmad; Khusnani, Azmi; Nurrahman, Arip; Alip, Isma; Wae, Konsenius Wiran; Wahab, Dedi Suwandi
Engineering Science Letter Vol. 3 No. 02 (2024): Engineering Science Letter
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/esl.v3i02.540

Abstract

This research discusses an analytical approach to suspension bridge accidents focusing on eigenvalue characteristics. This research uses eigenvalue analysis to explore patterns that may contribute to bridge structural failure. The analysis steps include reducing the model to an uncoupled and linear system, as well as determining homogeneous and non-homogeneous solutions, which helps identify accident-prone patterns. The analysis results also reveal significant differences in dynamic characteristics between safe bridges and those that experience accidents. This research highlights the importance of a deep understanding of eigenvalues in designing, maintaining, and managing suspension bridges. The implication of this research is the development of more effective prevention strategies to improve suspension bridge safety in the future. By analyzing eigenvalues, this research provides deep insight into the factors that influence the stability of suspension bridges. These findings provide a strong foundation for developing recommendations for more effective design, maintenance, and management of suspension bridges. The conclusions of this research can help improve the safety and reliability of suspension bridges worldwide and contribute to civil engineering and infrastructure security.
Pemanfaatan skala danjon sebagai media untuk mengukur rona gerhana Khusnani, Azmi; Jufriansah, Adi; Pramudya, Yudhiakto; Hikmatiar, Hamzarudin; Saharul, Saharul; Alip, Isma; Wae, Konsenius Wiran; Yohakim, Yoman Ribeta Ratu
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 8, No 2 (2024): June
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v8i2.22869

Abstract

AbstrakProses terjadinya Gerhana Bulan Total merupakan fenomena astronomi yang  terjadi ketika seluruh permukaan Bulan tertutupi oleh bayang bayang Bumi atau disebut dengan umbra. Hal ini dapat terjadi ketika konfigurasi antara Bulan, Bumi, dan Matahari berada pada satu garis lurus. Oleh karena itu, fenomena Gerhana Bulan Total akan terjadi bersamaan dengan fase Bulan Purnama. Tujuan dilakukannya pengabdian ini adalah untuk mengamati Gerhana Bulan. Metode yang digunakan adalah observasi dan pengisian angket skala Danjon. Pelaksanaan kegiatan dilakukan pada tanggal 8 November 2022 yang dimulai pada pukul 18.00 WITA dengan peserta yang berasal dari masyarakat umum dan masyarakat Universitas Muhammadiyah Maumere. Berdasarkan hasil implementasi diketahui bahwa kondisi cuaca pada saat pelaksanaan sulit dilakukan pengamatan karena kondisi mendung disertai gerimis. Namun, peserta yang mengamati dapat menilai kecerahan gerhana bulan Kata kunci: gerhana bulan total; astronomi; skala danjon; pengamatan. AbstractThe total lunar eclipse process is an astronomical phenomenon that occurs when the Earth's shadow, called the umbra, covers the entire moon's surface. It can happen when the configuration between the Moon, Earth, and Sun is straight. Therefore, the total lunar eclipse phenomenon will co-occur with the complete moon phase. The purpose of doing this service is to observe the Lunar Eclipse. The method used is observation and filling out the Danjon scale questionnaire. The implementation was carried out on November 8, 2022, starting at 18.00 WITA with participants from the general public and the Universitas Muhammadiyah Maumere community. Based on the implementation results, it is known that the weather conditions at the time of observation were challenging because of cloudy conditions accompanied by drizzle. However, participants can judge the brightness of the lunar eclipse. Keywords: total lunar eclipse; astronomy; danjon scale; observation.
Aktivitas Seismik Gempa Bumi Laut Flores: Periode 30 Tahun Khusnani, Azmi; Jufriansah, Adi; Wae, Konsenius Wiran; Sulistyaningsih, Dwi; Margiono, Margiono
DIFFRACTION: Journal for Physics Education and Applied Physics Vol 6, No 1 (2024)
Publisher : Pendidikan Fisika, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37058/diffraction.v6i1.8836

Abstract

Pulau Flores, yang terletak di bagian timur Indonesia, khususnya Nusa Tenggara Timur, merupakan salah satu daerah di Indonesia Timur yang memiliki risiko tinggi terhadap gempa bumi. Catatan sejarah mencatat bahwa wilayah Flores telah mengalami gempa bumi dengan kekuatan magnitudo lebih dari 7 pada tahun 1992, 1996, 2015, dan 2021. Oleh karena itu, sangat penting untuk melakukan sebuah studi yang komprehensif terhadap aktivitas seismik yang terjadi di wilayah ini. Oleh karena itu penelitian ini bertujuan untuk memahami aktivitas gempa bumi di Laut Utara Flores selama periode 30 tahun dengan menganalisis frekuensi dan magnitudo gempa yang terjadi. Metode yang digunakan dalam penelitian ini adalah pemetaan berdasarkan aktivitas seismik dan distribusi frekuensi, yang memungkinkan peneliti untuk lebih memahami pola gempa bumi di wilayah Flores dan menganalisis perubahan frekuensi kejadian gempa selama periode yang diteliti. Hasil penelitian ini mengungkapkan bahwa selama periode 30 tahun di Laut Flores, terdapat keterkaitan antara kejadian gempa bumi dengan magnitudo 4, yang mengindikasikan adanya aktivitas seismik yang berlangsung secara berkelanjutan di wilayah ini. Pola distribusi gempa selama periode ini memberikan wawasan yang berharga tentang tingkat aktivitas lempeng tektonik di wilayah Laut Flores, serta risiko potensial terjadinya gempa bumi di masa depan. Penelitian ini merupakan langkah penting dalam upaya pemahaman dan mitigasi risiko gempa bumi.
Co-Authors Adi Jufriansah Alip, Isma Anggraini, Ade Azmi Khusnani Dwi Sulistyaningsih hikmatiar, hamzarudin Lazwardi, Ahmad Margiono Margiono Margiono, Margiono Nurrahman, Arip Saharul, Saharul Wahab, Dedi Suwandi Yohakim, Yoman Ribeta Ratu Yudhiakto Pramudya Zulfakriza, Zulfakriza