Perbandingan Koreksi Medan (Terrain Correction) Konvensional dan Modern pada Metode Gravitasi Menggunakan Data DEM ERTM2160 dan SRTM2gravity pada Wilayah Cianjur
DOI:
https://doi.org/10.25077/jfu.13.5.651-657.2024Keywords:
Anomalies, CBA, DEM ERTM2160, Cugenang Fault, SRTM2gravityAbstract
A study has been conducted to compare the distribution of anomaly values obtained through conventional and modern terrain correction to identify the subsurface structure of the Cianjur region, especially around the location of the Cugenang Fault. The data used are gravity disturbance data equivalent to Free Air Anomaly (FAA) from GGMplus, ERTM2160 DEM data as topographic data, and modern terrain correction data from SRTM2gravity. Data is processed using Microsoft Excel, Oasis Montaj, and Surfer software. Based on the results of the CBA contour map obtained, the application of SRTM2gravity data as a modern terrain correction provides better results so that subsurface structure modeling will provide more accurate results. The CBA contour map produced from modern terrain correction provides clearer topographic results than conventional terrain correction using ERTM2160 DEM topographic data. Furthermore, using SRTM2gravity modern terrain correction data provides clearer rock density contrast results along the active path of the Cugenang Fault.
References
Ashar, M. I., Irham, M. N., & Danusaputro, H. (2017). Pemodelan bawah permukaan zona subduksi Daerah Selatan Jawa Barat berdasarkan data anomali medan gravitasi. Youngster Physics Journal, 6(4), 382–387.
BMKG. (2023). Peta Bahaya Gempabumi Cianjur (dengan Sumber Gempa Patahan Cugenang). https://www.bmkg.go.id/berita/?p=peta-bahaya-gempabumi-cianjur-dengan-sumber-gempa patahan-cugenang&lang=ID
Hinze, W. J., Von Frese, R. R. B., & Saad, A. H. (2010). Gravity and magnetic exploration: Principles, practices, and applications. In Gravity and Magnetic Exploration: Principles, Practices, and Applications. https://doi.org/10.1017/CBO9780511843129
Hirt, C., Claessens, S., Fecher, T., Kuhn, M., Pail, R., & Rexer, M. (2013). New ultra-high resolution picture of Earth ’ s gravity field. 40(16), 4279–4283. https://doi.org/10.1002/grl.50838.New
Hirt, C., Kuhn, M., Claessens, S., Pail, R., Seitz, K., & Gruber, T. (2014). Study of the Earth’s short scale gravity field using the ERTM2160 gravity model. Computers and Geosciences, 73, 71 80. https://doi.org/10.1016/j.cageo.2014.09.001
Hirt, C., Yang, M., Kuhn, M., Bucha, B., Kurzmann, A., & Pail, R. (2019). SRTM2gravity : an ultrahigh resolution global model of gravimetric terrain corrections. Geophysical Research. https://doi.org/10.1029/2019GL082521.SRTM2gravity
Kearey, P., & Brooks, M. (1991). An introduction to geophysical exploration. 2nd edition. An Introduction to Geophysical Exploration. 2nd Edition.
Maulidina, M. (2023). Analisis Kontras Densitas Lapisan Batuan Di Bawah Permukaan Tanah Dengan Metode Gravitasi Miftakhul. Indonesian Journal of Computer Science, 12(1), 303–308.
Meilano, I., Tiaratama, A. L., Wijaya, D. D., Maulida, P., Susilo, S., & Fitri, I. H. (2020). Analisis Potensi Gempa di Selatan Pulau Jawa Berdasarkan Pengamatan GPS. Jurnal Lingkungan Dan Bencana Geologi, 11(3), 151–159. https://doi.org/10.34126/jlbg.v11i3.352
Navalia, A. I., Realita, A., & Prastowo, T. (2023). Analisis Anomali Gravitasi Gunung Semeru Pasca Erupsi. Jurnal Inovasi Fisika Indonesia, 12(1), 63–74. https://arcgis.com/home/group.html
Pohan, A. F., Sismanto, S., Nurcahya, B. E., Lewerissa, R., Koesuma, S., Saputro, S. P., Amukti, R., Saputra, H., & Adhi, M. A. (2023). Utilization and modeling of satellite gravity data for geohazard assessment in the Yogyakarta area of Java Island, Indonesia. Kuwait Journal of Science. https://doi.org/10.1016/j.kjs.2023.05.016
Putri, D. I. (2023). Identifikasi Sesar Menggunakan Metode Gravitasi dan Penentuan Hiposenter Gempa Bumi dengan Metode Modified Joint Hypocenter Determination di Daerah Cianjur. Universitas Islam Negeri Syarif Hidayatullah Jakarta.
Sudjatmiko. (2003). Peta Geologi Lembar Cianjur. ESDM. https://www.esdm.go.id/
Supendi, P., Jatnika, J., Sianipar, D., & Ali, Y. H. (2022). Analisis Gempabumi Cianjur ( Jawa Barat ) Mw 5 . 6 Tanggal 21 November 2022. November, 13–16.
Telford, W. M., Geldart, L. P., & Sheriff, R. E. (1990). Applied Geophysics (2th ed.). Cambridge University Press.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2024 Afikatul Awaliyah, Ahmad Fauzi Pohan
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.
