Anomalously Large Ground Motion in the 2016<i>M</i>_L 6.6 Meinong, Taiwan, Earthquake: A Synergy Effect of Source Rupture and Site Amplification

Abstract

Research Article| September 14, 2016 Anomalously Large Ground Motion in the 2016 ML 6.6 Meinong, Taiwan, Earthquake: A Synergy Effect of Source Rupture and Site Amplification Shiann‐Jong Lee; Shiann‐Jong Lee aInstitute of Earth Sciences, Academia Sinica, No. 128, Section 2, Academia Road, Nankang, Taipei 11529, [e-mail] Search for other works by this author on: GSW Google Scholar Te‐Yang Yeh; Te‐Yang Yeh aInstitute of Earth Sciences, Academia Sinica, No. 128, Section 2, Academia Road, Nankang, Taipei 11529, [e-mail] Search for other works by this author on: GSW Google Scholar Yen‐Yu Lin Yen‐Yu Lin aInstitute of Earth Sciences, Academia Sinica, No. 128, Section 2, Academia Road, Nankang, Taipei 11529, [e-mail] Search for other works by this author on: GSW Google Scholar Author and Article Information Shiann‐Jong Lee aInstitute of Earth Sciences, Academia Sinica, No. 128, Section 2, Academia Road, Nankang, Taipei 11529, [e-mail] Te‐Yang Yeh aInstitute of Earth Sciences, Academia Sinica, No. 128, Section 2, Academia Road, Nankang, Taipei 11529, [e-mail] Yen‐Yu Lin aInstitute of Earth Sciences, Academia Sinica, No. 128, Section 2, Academia Road, Nankang, Taipei 11529, [e-mail] Publisher: Seismological Society of America First Online: 14 Jul 2017 Online Issn: 1938-2057 Print Issn: 0895-0695 © 2016 by the Seismological Society of America Seismological Research Letters (2016) 87 (6): 1319–1326. https://doi.org/10.1785/0220160082 Article history First Online: 14 Jul 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Shiann‐Jong Lee, Te‐Yang Yeh, Yen‐Yu Lin; Anomalously Large Ground Motion in the 2016 ML 6.6 Meinong, Taiwan, Earthquake: A Synergy Effect of Source Rupture and Site Amplification. Seismological Research Letters 2016;; 87 (6): 1319–1326. doi: https://doi.org/10.1785/0220160082 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 On 6 February 2016, an ML 6.6 earthquake occurred in the Meinong area of southern Taiwan, causing anomalously large ground shaking. In this study, a joint source inversion was performed to understand the rupture process of this event and to identify how the anomalous strong motion was produced. The results show that the rupture process of this event was complex; at least two asperities were identified on the fault plane. The rupture mainly developed in the down‐dip direction and propagated toward the northwest. Results from a 3D wave propagation simulation further indicate that the strong ground shaking observed in southwest Taiwan was caused by a combination of three effects: (1) rupture directivity, (2) source radiation pattern, and (3) sedimentary amplification. The results demonstrate that constructive source rupture and wave propagation effects due to a moderate earthquake can cause anomalously strong ground motion and serious seismic hazards in nearby densely populated areas. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.