Analisis Kecepatan Pergeseran Seismik Sesar Palu Koro Akibat Gempa Palu 2018 Menggunakan Data Global Navigation Satellite System
DOI:
https://doi.org/10.25077/jfu.11.4.428-434.2022Abstract
Kecepatan pergeseran seismik horizontal dari Sesar Palu koro akibat gempa Palu 28 September 2018 dengan kekuatan 7,4 SR telah dianalis menggunakan 10 stasiun InaCORS (Indonesian Continuously Operating Reference Stations) untuk melihat pergeseran yang terjadi sebelum gempa/praseismik, saat gempa/koseismik, dan setelah gempa/pascaseismik. Stasiun yang digunakan adalah CBAL, CRAU, PALP, CKEN, CTOL, CPRE, CMLI, CPAL, CMAK, dan CBIT. Penelitian ini menggunakan software GAMIT, GLBOK, dan GMT. Data pengamatan yaitu sebanyak 100 DoY (Day of Years) dimulai dari 6 Agustus sampai 28 November 2018 (DoY 218-317). Pada fase praseismik (DoY 218-270), stasiun InaCORS mengalami kecepatan pergeseran 0,245819 mm/hari-0,026816 mm/hari dengan arah pergerakan dipengaruhi oleh manifestasi tektoknik yang ada di Sulawesi. Kecepatan Pergeseran meningkat pada fase koseismik (DoY 271-272) dimana stasiun InaCORS kecepatan pergeseran 1151,790819 mm/hari sampai 0,592832 mm/hari dengan arah yang berlawanan dengan fase praseismik. Stasiun yang bagian utara bergerak dominan ke utara dan yang selatan dominan ke selatan. Pada fase pascaseismik (DoY 273-318), Kecepatan pergerakan stasiun InaCORS mengikuti arah pergerakan pada fase koseismik, dengan besar kecepatan sebesar 0,023154 mm/hari 0,283536 m.References
Anggraini, R.M., dkk., 2019, Analisis Deformasi Gempa Mentawai 2008 Menggunakan Data Gps Dari Sugar (Skripsi), Universitas Andalas, Padang.
Badan Meterorologi, Klimatologi, dan Geofisika, 2018, Gempa Tektonik M= 7.7 Kabupaten Donggala, Sulawesi Tengah, diakses pada tanggal 22 Januari 2022, <https://www.bmkg.go.id/berita/?p=gempa-m7-7-kabupaten-donggala-Sulawesi-tengah>
Bird, P., 2003, An Updated Digital Model of Plate Boundaries, Geochem, Geophys, Geosyst., 4(3), 1027, doi:10.1029/2001GC000252.
Muttaqin, M.F., 2019, Analisis Deformasi Gempa Palu 2018 Berdasarkan Pengamatan GPS Kontinu Metode Statistik (Skripsi), Institut Teknologi Bandung, Bandung.
Sompotan, A.F, 2012, Struktur Geologi Sulawesi, Institut Teknologi Bandung, Bandung.
Supartoyo, Cecep, S., Junaedi, D., 2014, ‘Kelas tektonik Sesar Palu Koro, Sulawesi Tengah’, Jurnal Lingkungan dan Bencana Geologi, Vol. 5 hal 111 128.
Supartoyo dan Surono, 2018, Katalog Gempa bumi Merusak di Indonesia Tahun 1629 2014, Pusat Vulkanologi dan Mitigasi Bencana Geologi, Bandung.
Wihikan, W.D., Heliani, S.L., 2020, Analisis Pola Pergerakan Stasiun Cors di Pulau Sulawesi Akibat Gempa Tektonik Palu 7,5 Sr (Skripsi), Universitas Gajah Mada, Yogyakarta.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2022 Jurnal Fisika Unand
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Please find the rights and licenses in JFU (Jurnal Fisika Unand).
1. License
The non-commercial use of the article will be governed by the Creative Commons Attribution license as currently displayed on Creative Commons Attribution-NonCommercial 4.0 International License.
2. Authors Warranties
The author warrants that the article is original, written by stated author(s), has not been published before, contains no unlawful statements, does not infringe the rights of others, is subject to copyright that is vested exclusively in the author and free of any third party rights, and that any necessary written permissions to quote from other sources have been obtained by the author(s).
3. User Rights
JFU's spirit is to disseminate articles published are as free as possible. Under the Creative Commons license, JFU permits users to copy, distribute, display, and perform the work for non-commercial purposes only. Users will also need to attribute authors and JFU on distributing works in the journal.
4. Rights of Authors
Authors retain the following rights:
- Copyright, and other proprietary rights relating to the article, such as patent rights,
- The right to use the substance of the article in future own works, including lectures and books,
- The right to reproduce the article for own purposes, provided the copies are not offered for sale,
- The right to self-archive the article.
5. Co-Authorship
If the article was jointly prepared by other authors, the signatory of this form warrants that he/she has been authorized by all co-authors to sign this agreement on their behalf, and agrees to inform his/her co-authors of the terms of this agreement.
6. Termination
This agreement can be terminated by the author or JFU upon two months notice where the other party has materially breached this agreement and failed to remedy such breach within a month of being given the terminating partys notice requesting such breach to be remedied. No breach or violation of this agreement will cause this agreement or any license granted in it to terminate automatically or affect the definition of JFU.
7. Royalties
This agreement entitles the author to no royalties or other fees. To such extent as legally permissible, the author waives his or her right to collect royalties relative to the article in respect of any use of the article by JFU or its sublicensee.
8. Miscellaneous
JFU will publish the article (or have it published) in the journal if the articles editorial process is successfully completed and JFU or its sublicensee has become obligated to have the article published. JFU may conform the article to a style of punctuation, spelling, capitalization, referencing and usage that it deems appropriate. The author acknowledges that the article may be published so that it will be publicly accessible and such access will be free of charge for the readers.
