ShakingAlarm: A Nontraditional Regional Earthquake Early Warning System Based on Time‐Dependent Anisotropic Peak Ground‐Motion Attenuation Relationships

Abstract

Research Article| April 03, 2018 ShakingAlarm: A Nontraditional Regional Earthquake Early Warning System Based on Time‐Dependent Anisotropic Peak Ground‐Motion Attenuation Relationships Benjamin Ming Yang; Benjamin Ming Yang aDepartment of Geosciences, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan, tingchunghuang@gmail.com, yihmin.wu@gmail.com, b98204032@gmail.com Search for other works by this author on: GSW Google Scholar Ting‐Chung Huang; Ting‐Chung Huang aDepartment of Geosciences, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan, tingchunghuang@gmail.com, yihmin.wu@gmail.com, b98204032@gmail.combAlso at Institute of Earth Sciences, Academia Sinica 128, Section 2, Academia Road, Nangang, Taipei 11529, Taiwan. Search for other works by this author on: GSW Google Scholar Yih‐Min Wu Yih‐Min Wu aDepartment of Geosciences, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan, tingchunghuang@gmail.com, yihmin.wu@gmail.com, b98204032@gmail.combAlso at Institute of Earth Sciences, Academia Sinica 128, Section 2, Academia Road, Nangang, Taipei 11529, Taiwan. Search for other works by this author on: GSW Google Scholar Author and Article Information Benjamin Ming Yang aDepartment of Geosciences, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan, tingchunghuang@gmail.com, yihmin.wu@gmail.com, b98204032@gmail.com Ting‐Chung Huang aDepartment of Geosciences, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan, tingchunghuang@gmail.com, yihmin.wu@gmail.com, b98204032@gmail.combAlso at Institute of Earth Sciences, Academia Sinica 128, Section 2, Academia Road, Nangang, Taipei 11529, Taiwan. Yih‐Min Wu aDepartment of Geosciences, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan, tingchunghuang@gmail.com, yihmin.wu@gmail.com, b98204032@gmail.combAlso at Institute of Earth Sciences, Academia Sinica 128, Section 2, Academia Road, Nangang, Taipei 11529, Taiwan. Publisher: Seismological Society of America First Online: 03 Apr 2018 Online Issn: 1943-3573 Print Issn: 0037-1106 © Seismological Society of America Bulletin of the Seismological Society of America (2018) 108 (3A): 1219–1230. https://doi.org/10.1785/0120170105 Article history First Online: 03 Apr 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Benjamin Ming Yang, Ting‐Chung Huang, Yih‐Min Wu; ShakingAlarm: A Nontraditional Regional Earthquake Early Warning System Based on Time‐Dependent Anisotropic Peak Ground‐Motion Attenuation Relationships. Bulletin of the Seismological Society of America 2018;; 108 (3A): 1219–1230. doi: https://doi.org/10.1785/0120170105 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 The P‐alert seismic network, an on‐site low‐cost earthquake early warning system (EEWS) located in Taiwan, has proven useful in earthquake events since 2010. This dense network can produce detailed shakemaps and identify the direction of the source rupture in near‐real time. Based on real‐time acceleration signals and the proposed time‐dependent anisotropic attenuation relationship with peak ground acceleration (PGA), ShakingAlarm, a regional early warning system add‐on to the original P‐alert network, can immediately provide (1) an accurate predicted PGA, before the arrival of the observed PGA, that will give a consistent lead time for hazard assessment and emergency response, (2) a predicted shakemap (PSM) that will converge faster to the final reported shakemap than the regional EEWS, and (3) a shake contour area‐based magnitude estimation that is robust, even in the absence of a measured shake contour area such as in the case of an offshore earthquake. Taking the 2016 Mw 6.4 Meinong earthquake as an example, the 14th second PSM from ShakingAlarm converges on the final shakemap better than the regional EEWS from the Central Weather Bureau (CWB) in Taiwan. According to our tests, ShakingAlarm provides a warning using modified Mercalli intensity (MMI) V that is consistent with the results of another on‐site EEWS (Strategies and Tools for Real Time Earthquake Risk ReducTion [REAKT]). Further performance tests were conducted with another five ML>5.5 inland earthquakes from 2013 to 2014. Compared with traditional regional EEWSs, ShakingAlarm can effectively identify possible damage regions and provide valuable early warning information (PSM, predicted PGA, and magnitude) for risk mitigation. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.