Korelasi Tingkat Seismisitas dan Periode Ulang Gempa Bumi di Kepulauan Mentawai dengan Menggunakan Metode Guttenberg-Richter

Authors

  • Rahma Fidia Laboratorium Fisika Bumi, Jurusan Fisika Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Andalas
  • Dwi Pujiastuti Laboratorium Fisika Bumi, Jurusan Fisika Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Andalas
  • Andiyansyah Sabarani Badan Meteorologi Klimatologi dan Geofisika

DOI:

https://doi.org/10.25077/jfu.7.1.84-89.2018

Abstract

Analisis tingkat seismisitas dan periode ulang gempa bumi berdasarkan magnitudo telah dilakukan pada daerah Kepulauan Mentawai dan sekitarnya. Data yang digunakan adalah gempa bumi dengan magnitudo sama atau besar dari 5 Skala Richter dan kedalaman 0-100 km untuk periode 1914-2015. Data ini bersumber dari katalog ISC (International Seismological Centre) dan BMKG Padang Panjang. Tingkat keaktifan gempa bumi dihitung dengan menggunakan metode Likelihood, sedangkan nilai periode ulang gempa dihitung dengan menggunakan metode Guttenberg-Richter. Berdasarkan hasil perhitungan,  diperoleh nilai  b sebesar 0,8372 dan nilai a sebesar 6,8094 serta nilai indeks seismisitas untuk magnitudo 5-8 berkisar antara 2,1580-0,0066. Hal ini menunjukkan bahwa daerah penelitian memiliki tingkat keaktifan kegempaan yang tinggi. Untuk magnitudo 5-8 diperoleh nilai periode ulang antara 0,4633-150,5033 tahun. Secara umum dapat disimpulkan bahwa daerah Kepulauan Mentawai memiliki tingkat seismisitas tinggi dan rawan bencana gempa bumi. Hal ini dibuktikan dengan tingginya tingkat keaktifan gempa dan nilai periode ulang yang singkat.

Kata Kunci : Gempa, Metode Guttenberg-Richter, Indeks Seismisitas, Kepulauan Mentawai

Downloads

Published

2018-01-03

How to Cite

Fidia, R., Pujiastuti, D., & Sabarani, A. (2018). Korelasi Tingkat Seismisitas dan Periode Ulang Gempa Bumi di Kepulauan Mentawai dengan Menggunakan Metode Guttenberg-Richter. Jurnal Fisika Unand, 7(1), 84–89. https://doi.org/10.25077/jfu.7.1.84-89.2018

Issue

Vol. 7 No. 1 (2018)

Section

Articles

License

Copyright (c) 2018 Rahma Fidia, Dwi Pujiastuti, Andiyansyah Sabarani

Creative Commons License

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.