Hypocenter Relocation along the Sunda Arc in Indonesia, Using a 3D Seismic‐Velocity Model

Abstract

Research Article| January 03, 2018 Hypocenter Relocation along the Sunda Arc in Indonesia, Using a 3D Seismic‐Velocity Model Andri D. Nugraha; Andri D. Nugraha aGlobal Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Jl. Ganesa 10, Bandung, West Java 40132, Indonesia, [e-mail] Search for other works by this author on: GSW Google Scholar Hasbi A. Shiddiqi; Hasbi A. Shiddiqi bEarth Sciences Graduate Program, Faculty of Earth Sciences and Technology, Institut Teknologi Bandung, Jl. Ganesa 10, Bandung, West Java 40132, Indonesia Search for other works by this author on: GSW Google Scholar Sri Widiyantoro; Sri Widiyantoro aGlobal Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Jl. Ganesa 10, Bandung, West Java 40132, Indonesia, [e-mail] Search for other works by this author on: GSW Google Scholar Clifford H. Thurber; Clifford H. Thurber cDepartment of Geoscience, University of Wisconsin–Madison, 1215 West Dayton Street, Madison, Wisconsin 53706‐1692 U.S.A Search for other works by this author on: GSW Google Scholar Jeremy D. Pesicek; Jeremy D. Pesicek dVolcano Disaster Assistance Program, USGS Cascades Volcano Observatory, 1300 SE Cardinal Court Building 10, Vancouver, Washington 98683 U.S.A. Search for other works by this author on: GSW Google Scholar Haijiang Zhang; Haijiang Zhang eSchool of Earth and Space, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, Anhui, China Search for other works by this author on: GSW Google Scholar Samsul H. Wiyono; Samsul H. Wiyono fAgency for Meteorology, Climatology, and Geophysics (BMKG), Jl. Angkasa 1, No. 2, Jakarta 10720, Indonesia Search for other works by this author on: GSW Google Scholar Mohamad Ramdhan; Mohamad Ramdhan fAgency for Meteorology, Climatology, and Geophysics (BMKG), Jl. Angkasa 1, No. 2, Jakarta 10720, Indonesia Search for other works by this author on: GSW Google Scholar Wandono; Wandono fAgency for Meteorology, Climatology, and Geophysics (BMKG), Jl. Angkasa 1, No. 2, Jakarta 10720, Indonesia Search for other works by this author on: GSW Google Scholar Mahsyur Irsyam Mahsyur Irsyam gGeotechnical Engineering Research Group, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Jl. Ganesa 10, Bandung, West Java 40132, Indonesia Search for other works by this author on: GSW Google Scholar Author and Article Information Andri D. Nugraha aGlobal Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Jl. Ganesa 10, Bandung, West Java 40132, Indonesia, [e-mail] Hasbi A. Shiddiqi bEarth Sciences Graduate Program, Faculty of Earth Sciences and Technology, Institut Teknologi Bandung, Jl. Ganesa 10, Bandung, West Java 40132, Indonesia Sri Widiyantoro aGlobal Geophysics Research Group, Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Jl. Ganesa 10, Bandung, West Java 40132, Indonesia, [e-mail] Clifford H. Thurber cDepartment of Geoscience, University of Wisconsin–Madison, 1215 West Dayton Street, Madison, Wisconsin 53706‐1692 U.S.A Jeremy D. Pesicek dVolcano Disaster Assistance Program, USGS Cascades Volcano Observatory, 1300 SE Cardinal Court Building 10, Vancouver, Washington 98683 U.S.A. Haijiang Zhang eSchool of Earth and Space, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, Anhui, China Samsul H. Wiyono fAgency for Meteorology, Climatology, and Geophysics (BMKG), Jl. Angkasa 1, No. 2, Jakarta 10720, Indonesia Mohamad Ramdhan fAgency for Meteorology, Climatology, and Geophysics (BMKG), Jl. Angkasa 1, No. 2, Jakarta 10720, Indonesia Wandono fAgency for Meteorology, Climatology, and Geophysics (BMKG), Jl. Angkasa 1, No. 2, Jakarta 10720, Indonesia Mahsyur Irsyam gGeotechnical Engineering Research Group, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Jl. Ganesa 10, Bandung, West Java 40132, Indonesia Publisher: Seismological Society of America First Online: 03 Jan 2018 Online Issn: 1938-2057 Print Issn: 0895-0695 © Seismological Society of America Seismological Research Letters (2018) 89 (2A): 603–612. https://doi.org/10.1785/0220170107 Article history First Online: 03 Jan 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Andri D. Nugraha, Hasbi A. Shiddiqi, Sri Widiyantoro, Clifford H. Thurber, Jeremy D. Pesicek, Haijiang Zhang, Samsul H. Wiyono, Mohamad Ramdhan, Wandono, Mahsyur Irsyam; Hypocenter Relocation along the Sunda Arc in Indonesia, Using a 3D Seismic‐Velocity Model. Seismological Research Letters 2018;; 89 (2A): 603–612. doi: https://doi.org/10.1785/0220170107 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 SocietySeismological Research Letters Search Advanced Search ABSTRACT The tectonics of the Sunda arc region is characterized by the junction of the Eurasian and Indo‐Australian tectonic plates, causing complex dynamics to take place. High‐seismicity rates in the Indonesian region occur due to the interaction between these tectonic plates. The availability of a denser network of seismometers after the earthquakes of Mw 9.1 in 2004 and Mw 8.6 in 2005 supports various seismic studies, one of which regards the precise relocation of the hypocenters. In this study, hypocenter relocation was performed using a teleseismic double‐difference (DD) relocation method (teletomoDD) combining arrival times of P and S waves from stations at local, regional, and teleseismic distances. The catalog data were taken from the Agency of Meteorology, Climatology, and Geophysics (BMKG) of Indonesia, and the International Seismological Centre (ISC) for the time period of April 2009 to May 2015. The 3D seismic‐wave velocity model with a grid size 1°×1° was used in the travel‐time calculations. Relocation results show a reduction in travel‐time residuals compared with the initial locations. The relocation results better illuminate subducted slabs and active faults in the region such as the Mentawai back thrust and the outer rise in the subduction zone south of Java. Focal mechanisms from the Global Centroid Moment Tensor catalog are analyzed in conjunction with the relocation results, and our synthesis of the results provides further insight into seismogenesis in the region. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.