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• W2895901624 abstract "Research Article| October 16, 2018 Implementation of the Waveform Correlation Event Detection System (WCEDS) Method for Regional Seismic Event Detection in Utah Stephen Arrowsmith; Stephen Arrowsmith aSandia National Laboratories, PO Box 5800, Mail Stop 0404, Albuquerque, New Mexico 87185, sjarrow@sandia.govsarrowsmith@gmail.com Search for other works by this author on: GSW Google Scholar Christopher Young; Christopher Young aSandia National Laboratories, PO Box 5800, Mail Stop 0404, Albuquerque, New Mexico 87185, sjarrow@sandia.govsarrowsmith@gmail.com Search for other works by this author on: GSW Google Scholar Kristine Pankow Kristine Pankow bUniversity of Utah, 115 South 1460 East, Salt Lake City, Utah 84112 Search for other works by this author on: GSW Google Scholar Bulletin of the Seismological Society of America (2018) 108 (6): 3548–3561. https://doi.org/10.1785/0120180097 Article history first online: 16 Oct 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Get Permissions Search Site Citation Stephen Arrowsmith, Christopher Young, Kristine Pankow; Implementation of the Waveform Correlation Event Detection System (WCEDS) Method for Regional Seismic Event Detection in Utah. Bulletin of the Seismological Society of America 2018;; 108 (6): 3548–3561. doi: https://doi.org/10.1785/0120180097 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search nav search search input Search input auto suggest search filter All ContentBy SocietyBulletin of the Seismological Society of America Search Advanced Search Abstract Backprojection techniques are a class of methods for detecting and locating events that have been successfully implemented at local scales for dense networks. This article develops the framework for applying a backprojection method to detect and locate a range of event sizes across a heteorogeneous regional network. This article extends previous work on the development of a backprojection method for local and regional seismic event detection, the Waveform Correlation Event Detection System (WCEDS). The improvements outlined here make the technique much more flexible for regional earthquake or explosion monitoring. We first explore how the backprojection operator can be formulated using either a travel‐time model or a stack of full waveforms, showing that the former approach is much more flexible and can lead to the detection of smaller events, and to significant improvements in the resolution of event parameters. Second, we discuss the factors that influence the grid of event hypotheses used for backprojection, and develop an algorithm for generating suitable grids for networks with variable density. Third, we explore the effect of including different phases in the backprojection operator, showing that the best results for the study region can be obtained using only the Pg phase, and by including terms for penalizing early arrivals when evaluating the fit for a given event hypothesis. Fourth, we incorporate two parallel backprojection computations with different distance thresholds to enable the robust detection of both network‐wide and small (sub‐network‐only) events. The set of improvements are outlined by applying WCEDS to four example events on the University of Utah Seismograph Stations (UUSS) network. You do not currently have access to this article." @default.
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• W2895901624 title "Implementation of the Waveform Correlation Event Detection System (WCEDS) Method for Regional Seismic Event Detection in Utah" @default.
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