Aktivitas Seismik Gempa Bumi Laut Flores: Periode 30 Tahun

Azmi Khusnani; Adi Jufriansah; Konsenius Wiran Wae; Dwi Sulistyaningsih; Margiono Margiono

doi:10.37058/diffraction.v6i1.8836

Aktivitas Seismik Gempa Bumi Laut Flores: Periode 30 Tahun

Azmi Khusnani, Adi Jufriansah, Konsenius Wiran Wae, Dwi Sulistyaningsih, Margiono Margiono

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.

Keywords

Frekuensi; Gempa bumi; Laut Flores; Magnitudo; Seismik

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References

Aprianti, A., Jufriansah, A., Donuata, B., Khusnani, A., & Ayuba, J. (2019). Comparison of K-Means Algorithm and DBSCAN on Aftershock Activity in the Flores Sea: Seismic. Journal of Novel Engineering Science and Technology, 2(3), 77–82. https://doi.org/10.56741/jnest.v2i03.393

Beckers, J., & Lay, T. (1995). Very broadband seismic analysis of the 1992 Flores, Indonesia, earthquake (Mw = 7.9). Journal of Geophysical Research: Solid Earth, 100(B9), 18179–18193. https://doi.org/10.1029/95JB01689

Fujii, Y., & Sinki, K. P. (2021). Numerical Simulations of the 1992 Flores Tsunami Using Earthquake Fault and Landslide Models.

Gerstenberger, M. C., Marzocchi, W., Allen, T., Pagani, M., Adams, J., Danciu, L., Field, E. H., Fujiwara, H., Luco, N., Ma, K. ‐F., Meletti, C., & Petersen, M. D. (2020). Probabilistic Seismic Hazard Analysis at Regional and National Scales: State of the Art and Future Challenges. Reviews of Geophysics, 58(2). https://doi.org/10.1029/2019RG000653

Goes, S., Ruff, L., & Winslow, N. (1997). The Complex Rupture Process of the 1996 Deep Flores, Indonesia Earthquake (Mw 7.9) from Teleseismic P-waves. Geophysical Research Letters, 24(11), 1295–1298. https://doi.org/10.1029/97GL01245

Handayani, L. (2020). Seismic Hazard Analysis of Maumere, Flores: a Review of the Earthquake Sources. Proceedings of the Proceedings of the 7th Mathematics, Science, and Computer Science Education International Seminar, MSCEIS 2019, 12 October 2019, Bandung, West Java, Indonesia. https://doi.org/10.4108/eai.12-10-2019.2296247

Hutchings, S. J., & Mooney, W. D. (2021). The Seismicity of Indonesia and Tectonic Implications. Geochemistry, Geophysics, Geosystems, 22(9). https://doi.org/10.1029/2021GC009812

Jufriansah, A., Khusnani, A., Pramudya, Y., & Afriyanto, M. (2023). Comparison of aftershock behavior of the flores sea 12 december 1992 and 14 december 2021. Journal of Physics: Theories and Applications, 7(1), 65-74. https://doi.org/https://doi.org/10.20961/jphystheor-appl.v7i1.71609

Jufriansah, A., Khusnani, A., Pramudya, Y., Afriyanto, M., History, A., Jufriansah, A., Khusnani, A., Pramudya, Y., & Afriyanto, M. (2023). Estimation of Flores Sea Aftershock Rupture Data Based on AI. Indones. Rev. Phys, 6(1), 46–56. https://doi.org/10.12928/irip.v6i1.6705

Julius, A. M., & Daryono. (2021). Overview of 1990s deadly tsunamis in Indonesia. E3S Web of Conferences, 331, 07001. https://doi.org/10.1051/e3sconf/202133107001

Kânoğlu, U., Tanioka, Y., Okal, E. A., Baptista, M. A., & Rabinovich, A. B. (2019). Introduction to “Twenty Five Years of Modern Tsunami Science Following the 1992 Nicaragua and Flores Island Tsunamis, Volume I.” Pure and Applied Geophysics, 176(7), 2757–2769. https://doi.org/10.1007/s00024-019-02266-5

Kânoğlu, U., Tanioka, Y., Okal, E. A., Baptista, M. A., & Rabinovich, A. B. (2020). Introduction to “Twenty Five Years of Modern Tsunami Science Following the 1992 Nicaragua and Flores Island Tsunamis, Volume II.” Pure and Applied Geophysics, 177(3), 1183–1191. https://doi.org/10.1007/s00024-020-02451-x

Kato, A., & Ben-Zion, Y. (2021). The generation of large earthquakes. Nature Reviews Earth & Environment, 2(2), 160–160. https://doi.org/10.1038/s43017-021-00145-z

Khusnani, A., Husein, R., Jufriansah, A., Welly Jenni Thalo, O., Dewi Rahmawati, K., Fitri, M., & Aurora Adina, C. (2023). Identification of Understanding of Disaster Preparedness in the School Environment. Indonesian Journal on Learning and Advanced Education, 5(3), 233–248. https://doi.org/10.23917/ijolae.v5i3.22974

Khusnani, A., Jufriansah, A., & Afriyanto, M. (2022). Utilization of Seismic Data as a Tsunami Vulnerability Review. Indonesian Review of Physics, 5(2), 66–72. https://doi.org/https://doi.org/10.12928/irip.v5i2.6706

Khusnani, A., Jufriansah, A., Welly, O., & Thalo, J. (2023). Tsunami event in Flores: literature review. Journal of Physics: Theories and Applications J. Phys.: Theor. Appl, 7(2), 139–151. https://doi.org/10.20961/jphystheor-appl.v7i2.74625

Kim, K. O., Kim, D. C., Yuk, J. H., Pelinovsky, E., & Choi, B. H. (2015). Extreme Tsunami Inundation at Babi Island due to Flores Earthquake Induced Tsunami in 1992. Ocean and Polar Research, 37(2), 91–105. https://doi.org/10.4217/OPR.2015.37.2.091

Kiser, E., Ishii, M., Langmuir, C. H., Shearer, P. M., & Hirose, H. (2011). Insights into the mechanism of intermediate-depth earthquakes from source properties as imaged by back projection of multiple seismic phases. Journal of Geophysical Research, 116(B6), B06310. https://doi.org/10.1029/2010JB007831

Kurnio, H., Naibaho, T., & Purwanto, C. (2019). Review of Submarine Landslides in the Eastern Indonesia Region. Bulletin of the Marine Geology, 34(2), 63–76. https://doi.org/10.32693/bomg.34.2.2019.618

Maneno, R., Sentosa, B. J., & Rachman, G. (2019). Relocation Of Earthquake Hypocenter In The Flores Region Using Hypo71. IPTEK The Journal of Engineering, 5(2). https://doi.org/10.12962/j23378557.v5i2.a5024

Minarto, E., Santosa, B. J., Faridawati, Azhari, N. Y., Widihartanti, T., & Titi, Y. L. A. (2021). Regional Bouguer anomaly gravity data: 3-D modelling of subsurface structures of the Flores and Timor earthquake risk area. Journal of Physics: Conference Series, 1825(1), 012017. https://doi.org/10.1088/1742-6596/1825/1/012017

Minoura, K., Imamura, F., Takahashi, T., & Shuto, N. (1997). Sequence of Sedimentation Processes caused by the 1992 Flores Tsunami: Evidence from Babi Island. Geology, 25(6), 523–526. https://doi.org/10.1130/0091-7613(1997)025<0523:SOSPCB>2.3.CO;2

Pranantyo, I. R., & Cummins, P. R. (2019). Multi-Data-Type Source Estimation for the 1992 Flores Earthquake and Tsunami. Pure and Applied Geophysics, 176(7), 2969–2983. https://doi.org/10.1007/s00024-018-2078-4

Pranantyo, I. R., & Cummins, P. R. (2020). The 1674 Ambon Tsunami: Extreme Run-Up Caused by an Earthquake-Triggered Landslide. Pure and Applied Geophysics, 177(3), 1639–1657. https://doi.org/10.1007/s00024-019-02390-2

Pranantyo, I. R., Heidarzadeh, M., & Cummins, P. R. (2021). Complex tsunami hazards in eastern Indonesia from seismic and non-seismic sources: Deterministic modelling based on historical and modern data. Geoscience Letters, 8(1), 20. https://doi.org/10.1186/s40562-021-00190-y

Salditch, L., Stein, S., Neely, J., Spencer, B. D., Brooks, E. M., Agnon, A., & Liu, M. (2020). Earthquake supercycles and Long-Term Fault Memory. Tectonophysics, 774, 228289. https://doi.org/10.1016/j.tecto.2019.228289

Sasmi, A. T., Nugraha, A. D., Muzli, M., Widiyantoro, S., Zulfakriza, Z., Wei, S., Sahara, D. P., Riyanto, A., Puspito, N. T., Priyono, A., Greenfield, T., Afif, H., Supendi, P., Daryono, D., Ardianto, A., Syahbana, D. K., Husni, Y. M., Prabowo, B. S., & Narotama Sarjan, A. F. (2020). Hypocenter and Magnitude Analysis of Aftershocks of the 2018 Lombok, Indonesia, Earthquakes Using Local Seismographic Networks. Seismological Research Letters, 91(4), 2152–2162. https://doi.org/10.1785/0220190348

Satake, K., Bourgeois, J., Abe, K., Abe, K., Tsuji, Y., Imamura, F., Lio, Y., Katao, H., Noguera, E., & Estrada, F. (1993). Tsunami field survey of the 1992 Nicaragua earthquake. Eos, Transactions American Geophysical Union, 74(13), 145–157. https://doi.org/10.1029/93EO00271

Segall, P., Matthews, M. V., Shelly, D. R., Wang, T. A., & Anderson, K. R. (2024). Stress-driven recurrence and precursory moment-rate surge in caldera collapse earthquakes. Nature Geoscience, 17(3), 264–269. https://doi.org/10.1038/s41561-023-01372-3

Shohaya, J. N., Chasanah, U., Mutiarani, A., P, L. W., & Madlazim, M. (2013). Survey dan Analisis Seismisitas Wilayah Jawa Timur Berdasarkan Data Gempa Bumi Periode 1999-2013 sebagai Upaya Mitigasi Bencana Gempa Bumi. Jurnal Penelitian Fisika Dan Aplikasinya (JPFA), 3(2). http://www.iris.edu/SeismiQuery/sq-events.htm

Supendi, P., Rawlinson, N., Prayitno, B. S., Widiyantoro, S., Simanjuntak, A., Palgunadi, K. H., Kurniawan, A., Marliyani, G. I., Nugraha, A. D., Daryono, D., Anugrah, S. D., Fatchurochman, I., Gunawan, M. T., Sadly, M., Adi, S. P., Karnawati, D., & Arimuko, A. (2022). The Kalaotoa Fault: A Newly Identified Fault that Generated the Mw 7.3 Flores Sea Earthquake. The Seismic Record, 2(3), 176–185. https://doi.org/10.1785/0320220015

Tocheport, A., Rivera, L., & Chevrot, S. (2007). A systematic study of source time functions and moment tensors of intermediate and deep earthquakes. Journal of Geophysical Research: Solid Earth, 112(B7). https://doi.org/10.1029/2006JB004534

Wibowo, N. B., & Sembri, J. N. (2017). Analisis Seismisitas dan Energi Gempabumi di Kawasan Jalur Sesar Opak-Oyo Yogyakarta. Indonesian Journal of Applied Physics, 7(2), 2089–0133.

Wiens, D. A., & Louis, S. (1998). Source and Aftershock Properties of the 1996 Flores Sea Deep Earthquake. Geophysical Research Letters, 25(6), 781–784.

Yang, X., Singh, S. C., & Tripathi, A. (2020). Did the Flores backarc thrust rupture offshore during the 2018 Lombok earthquake sequence in Indonesia? Geophysical Journal International, 221(2), 758–768. https://doi.org/10.1093/gji/ggaa018

Zhao, D., Wang, J., Huang, Z., Liu, X., & Wang, Z. (2023). Seismic anisotropy and geodynamics of the East Japan subduction zone. Journal of Geodynamics, 156, 101975. https://doi.org/10.1016/j.jog.2023.101975

DOI: https://doi.org/10.37058/diffraction.v6i1.8836