A Robust Algorithm for Automatic<i>P</i>‐wave Arrival‐Time Picking Based on the Local Extrema Scalogram

Research Article| January 02, 2019 A Robust Algorithm for Automatic P‐wave Arrival‐Time Picking Based on the Local Extrema Scalogram Ting‐Chung Huang; Ting‐Chung Huang aDepartment of Geosciences, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan, tingchunghuang@gmail.comdrymwu@ntu.edu.twbAlso at NTU Research Center for Future Earth, National Taiwan University, Taipei 10617, Taiwan; Institute of Earth Sciences, Academia Sinica, No. 128, Section 2, Academia Road, Nangang, Taipei 11529, Taiwan; and National Center for Research on Earthquake Engineering, National Applied Research Laboratories, No. 200, Section 3, Xinhai Road, Taipei 106, 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, Section 4, Roosevelt Road, Taipei 10617, Taiwan, tingchunghuang@gmail.comdrymwu@ntu.edu.tw Search for other works by this author on: GSW Google Scholar Author and Article Information Ting‐Chung Huang aDepartment of Geosciences, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan, tingchunghuang@gmail.comdrymwu@ntu.edu.twbAlso at NTU Research Center for Future Earth, National Taiwan University, Taipei 10617, Taiwan; Institute of Earth Sciences, Academia Sinica, No. 128, Section 2, Academia Road, Nangang, Taipei 11529, Taiwan; and National Center for Research on Earthquake Engineering, National Applied Research Laboratories, No. 200, Section 3, Xinhai Road, Taipei 106, Taiwan. Yih‐Min Wu aDepartment of Geosciences, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan, tingchunghuang@gmail.comdrymwu@ntu.edu.tw Publisher: Seismological Society of America First Online: 02 Jan 2019 Online Issn: 1943-3573 Print Issn: 0037-1106 © Seismological Society of America Bulletin of the Seismological Society of America (2019) 109 (1): 413–423. https://doi.org/10.1785/0120180127 Article history First Online: 02 Jan 2019 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Ting‐Chung Huang, Yih‐Min Wu; A Robust Algorithm for Automatic P‐wave Arrival‐Time Picking Based on the Local Extrema Scalogram. Bulletin of the Seismological Society of America 2019;; 109 (1): 413–423. doi: https://doi.org/10.1785/0120180127 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 A robust algorithm has been developed for the automatic picking of P‐wave arrival times. Owing to the properties of the local extrema scalogram (LES), this algorithm finds all significant quasi‐periodic peaks and valleys without selecting a specific frequency. Consequently, the P‐wave arrival times can be accurately derived from the peaks and valleys of the seismic signal. A comparison of the proposed algorithm with the common short‐term average/long‐term average (STA/LTA) method and the Akaike information criterion (AIC) method is conducted using real data. The results show that our method consistently outperforms both methods, especially when substantial noise is present. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.