Portal de Periódicos da CAPES

Coseismic Slip Distribution of the 2 July 2013 Mw 6.1 Aceh, Indonesia, Earthquake and Its Tectonic Implications

2018; Seismological Society of America; Volume: 108; Issue: 4 Linguagem: Inglês

10.1785/0120180035

1943-3573

E. Gunawan, Sri Widiyantoro, Shindy Rosalia, Mudrik R. Daryono, Irwan Meilano, Pepen Supendi, Takeo Ito, Takao Tabei, Fumiaki Kimata, Yusaku Ohta, Nazli Ismail,

Earthquake Detection and Analysis

Research Article| June 05, 2018 Coseismic Slip Distribution of the 2 July 2013 Mw 6.1 Aceh, Indonesia, Earthquake and Its Tectonic Implications Endra Gunawan; Endra Gunawan aFaculty of Mining and Petroleum Engineering, Bandung Institute of Technology (ITB), Jalan Ganesha 10, Bandung, West Java 40132, Indonesia, endra@lppm.itb.ac.id Search for other works by this author on: GSW Google Scholar Sri Widiyantoro; Sri Widiyantoro aFaculty of Mining and Petroleum Engineering, Bandung Institute of Technology (ITB), Jalan Ganesha 10, Bandung, West Java 40132, Indonesia, endra@lppm.itb.ac.id Search for other works by this author on: GSW Google Scholar Shindy Rosalia; Shindy Rosalia aFaculty of Mining and Petroleum Engineering, Bandung Institute of Technology (ITB), Jalan Ganesha 10, Bandung, West Java 40132, Indonesia, endra@lppm.itb.ac.id Search for other works by this author on: GSW Google Scholar Mudrik Rahmawan Daryono; Mudrik Rahmawan Daryono bIndonesian Institute of Science (LIPI), Jalan Cisitu, Sangkuriang, Bandung, West Java 40135, Indonesia Search for other works by this author on: GSW Google Scholar Irwan Meilano; Irwan Meilano cFaculty of Earth Science and Technology, Bandung Institute of Technology (ITB), Jalan Ganesha 10, Bandung, West Java 40132, Indonesia Search for other works by this author on: GSW Google Scholar Pepen Supendi; Pepen Supendi dIndonesian Agency for Meteorological, Climatological and Geophysics (BMKG), Jalan Cemara No. 66, Sukajadi, Bandung, West Java 40161, Indonesia Search for other works by this author on: GSW Google Scholar Takeo Ito; Takeo Ito eGraduate School of Environmental Studies, Nagoya University, D2‐2 (510), Furo‐cho, Chikusa‐ku, Nagoya, Aichi 464‐8601, Japan Search for other works by this author on: GSW Google Scholar Takao Tabei; Takao Tabei fFaculty of Science and Technology, Kochi University, Akebono‐cho 2‐5‐1, Kochi 780‐8520, Japan Search for other works by this author on: GSW Google Scholar Fumiaki Kimata; Fumiaki Kimata gTono Research Institute of Earthquake Science, 1‐63, Yamanouchi, Akiyo‐cho, Mizunami, Gifu 509‐6132, Japan Search for other works by this author on: GSW Google Scholar Yusaku Ohta; Yusaku Ohta hGraduate School of Science, Tohoku University, 2 Chome‐1‐1 Katahira, Aoba Ward, Sendai, Miyagi 980‐8577, Japan Search for other works by this author on: GSW Google Scholar Nazli Ismail Nazli Ismail iDepartment of Physics, Syiah Kuala University, Jalan Teuku Nyak Arief, Darussalam, Banda Aceh, Aceh 23111, Indonesia Search for other works by this author on: GSW Google Scholar Bulletin of the Seismological Society of America (2018) 108 (4): 1918–1928. https://doi.org/10.1785/0120180035 Article history first online: 05 Jun 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Endra Gunawan, Sri Widiyantoro, Shindy Rosalia, Mudrik Rahmawan Daryono, Irwan Meilano, Pepen Supendi, Takeo Ito, Takao Tabei, Fumiaki Kimata, Yusaku Ohta, Nazli Ismail; Coseismic Slip Distribution of the 2 July 2013 Mw 6.1 Aceh, Indonesia, Earthquake and Its Tectonic Implications. Bulletin of the Seismological Society of America 2018;; 108 (4): 1918–1928. doi: https://doi.org/10.1785/0120180035 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyBulletin of the Seismological Society of America Search Advanced Search Abstract This study investigates the coseismic slip distribution of the 2 July 2013 Mw 6.1 Aceh earthquake using Global Positioning System (GPS) data, measured geological surface offsets, and an aftershock distribution for a period of four days after the mainshock. We use the aftershock distribution to constrain the fault‐plane strike of a right‐lateral fault identified as the Pantan Terong segment. We estimate the coseismic slip distribution with dip angle information from the Global Centroid Moment Tensor (CMT) (model 1) and U.S. Geological Survey (USGS) (model 2) catalogs. We also estimate the coseismic slip distribution using another two fault models. Model 3 is constructed on a left‐lateral fault, the Celala segment, which is perpendicular to the Aceh segment of the Sumatran fault, and model 4 is constructed using the multiple faults in models 2 and 3. We further estimate the coseismic slip distribution of this earthquake by employing an elastic dislocation model, inverting only the GPS displacements for model 3 and jointly inverting GPS displacements and geological surface offsets for models 1, 2, and 4. Minimum misfit between data and model is obtained with model 3, suggesting that the earthquake slip occurred along a left‐lateral fault. Analysis of stress transfer caused by the 2013 earthquake indicates that the stress level along the Pantan Terong segment is >0.4 bar and the southeast part of Aceh segment was brought ∼0.3 bar closer to failure, suggesting a possible earthquake occurrence in the future. This work demonstrates that the seismicity‐derived fault plane fails to predict the surface displacement, and that the inferred Celala segment produces positive stress on Pantan Terong segment and potentially triggered all the aftershocks. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.