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Resolving Focal Depth in Sparse Network with Local Depth Phase sPL : A Case Study for the 2011 Mineral, Virginia, Earthquake Sequence

2019; Seismological Society of America; Volume: 109; Issue: 2 Linguagem: Inglês

10.1785/0120180221

1943-3573

Xiaohui He, Peizhen Zhang, Sidao Ni, Wenjun Zheng,

Seismic Waves and Analysis

Research Article| March 12, 2019 Resolving Focal Depth in Sparse Network with Local Depth Phase sPL: A Case Study for the 2011 Mineral, Virginia, Earthquake Sequence Xiaohui He; Xiaohui He aGuangdong Provincial Key Lab of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat‐sen University, Guangzhou 510275, China, hexiaohui@foxmail.com, zhangpeizhen@mail.sysu.edu.cn, zhengwenjun@mail.sysu.edu.cncAlso at School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China. Search for other works by this author on: GSW Google Scholar Peizhen Zhang; Peizhen Zhang aGuangdong Provincial Key Lab of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat‐sen University, Guangzhou 510275, China, hexiaohui@foxmail.com, zhangpeizhen@mail.sysu.edu.cn, zhengwenjun@mail.sysu.edu.cn Search for other works by this author on: GSW Google Scholar Sidao Ni; Sidao Ni bState Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China, sdni@whigg.ac.cn Search for other works by this author on: GSW Google Scholar Wenjun Zheng Wenjun Zheng aGuangdong Provincial Key Lab of Geodynamics and Geohazards, School of Earth Sciences and Engineering, Sun Yat‐sen University, Guangzhou 510275, China, hexiaohui@foxmail.com, zhangpeizhen@mail.sysu.edu.cn, zhengwenjun@mail.sysu.edu.cn Search for other works by this author on: GSW Google Scholar Bulletin of the Seismological Society of America (2019) 109 (2): 745–755. https://doi.org/10.1785/0120180221 Article history first online: 12 Mar 2019 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Xiaohui He, Peizhen Zhang, Sidao Ni, Wenjun Zheng; Resolving Focal Depth in Sparse Network with Local Depth Phase sPL: A Case Study for the 2011 Mineral, Virginia, Earthquake Sequence. Bulletin of the Seismological Society of America 2019;; 109 (2): 745–755. doi: https://doi.org/10.1785/0120180221 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 Focal depths of earthquakes help reveal the seismogenic structure and crustal rheology, as well as the rupture nucleation process and coseismic rupture propagation process. In regions with dense seismic network, focal depth can be usually estimated precisely with travel time of Pg and Sg, which is challenging in the sparse network. In this article, we model the recently proposed local depth phase sPL to determine the focal depths of the aftershock sequence of the 2011 Virginia earthquake. The depth solutions of 10 M 2.5+ events are consistent with results determined with dense temporary stations, with a maximum difference less than 1 km and average deviation less than 0.5 km. This study indicates that reliable focal depth can be obtained via modeling sPL with waveform records from one or a few seismic stations, implying the applicability in sparse network. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.