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Tjahjono, Arif
Islamic State University Of Syarif Hidayatullah Jakarta
Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Other

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Analysis of return period and seismic risk of Shallow Earthquake occurrence in Cianjur and surrounding areas sutrisno, sutrisno; Tjahjono, Arif; Putra, Fathin Ramadhan
Journal of Natural Sciences and Mathematics Research Vol. 9 No. 2 (2023): December
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

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Abstract

Determination of the seismic risk and return period of shallow earthquakes in Cianjur and surrounding areas is very important as a reference in earthquake disaster mitigation programs. Within this return period, structural and non-structural conditions can be prepared in stages that are ready to face disasters if the earthquake recurs. In this study used the least squares statistical method to determine the relationship between frequency and magnitude, level of risk, and earthquake return period. The earthquake data used in this study is sourced from the earthquake catalog of the United States Geological Survey (USGS) spanning 50 years (1973 – 2023). A total of 57 shallow earthquakes that occurred in Cianjur area and its surroundings at coordinates (06°-08°S and 106°-108°E) with magnitude greater or equal to 5.0 at a depth of 0-60 km were used as sample data. Based on the results of data processing and analysis, the return periods are 3.17 to 29.1 years for earthquakes with magnitudes between 5.0 and 6.0, and 29.1 to 267.38 years for earthquakes with magnitudes between 6.0 and 7.0.. Earthquake risk for 10 to 20 years with magnitude greater than 5.0 is 95.74 to 99.82 %, with magnitude greater than 6.0 is 20.09 to 49.70 %, and with magnitude 7.0 is 3.67 to 7.21 %. From the results of processing and analysis of the earthquake data, it shows that the Cianjur area and its surroundings are earthquake-prone areas with a high risk.
Co-Authors A'yuni, Sayida Ma'wa Adi Chandra, Septian Agung Sabtaji Ahmad Firdaus Ahmad Novi Muslimin Ambran Hartono Apriatin, Apriatin Cut Fitria Dwi Yudanto, Sigit Frendyta, Nadya Salsabila Haiqal, Amanda Hanuarjie, Baskan Hidayat, Dony Indriani, Fitri Karina Iwan Setiawan Juli Hartati Kumila, Biaunik Niski Lusti Nur Azizah Marta, Aryandi Muhammad Umar Faruqi Mujadid Al-Rabi Niken Aprilia Eka Putri Noer Syahid, Adi Nuras, Muhammad Ishaq Nurrohmad, Abian Nurul Fadilah Paristiawan, Permana Andi Perdamean Sebayang Pramesti, Firly Giska Pratama, Elfriani Dita Pria Utama, Dedi Priambodo, Danang Pamungkas Priyambodo Priyambodo Putra, Fathin Ramadhan Riki Ardiansyah, Riki Roberto, Rahadian Saprila Suherman, Mila Saptari, Sitti Ahmiatri Sukmayanti, Putri Sutrisno, Sutrisno Yunan Hasbi, Muhammad