Coulomb Stress Interactions during the<i>M</i>_w 5.8 Pawnee Sequence

Abstract

Research Article| May 03, 2017 Coulomb Stress Interactions during the Mw 5.8 Pawnee Sequence Colin Pennington; Colin Pennington aSarkeys Energy Center, The University of Oklahoma, 100 East Boyd Street, RM 710, Norman, Oklahoma 73019 U.S.A., colin.n.pennington@ou.edu Search for other works by this author on: GSW Google Scholar Xiaowei Chen Xiaowei Chen aSarkeys Energy Center, The University of Oklahoma, 100 East Boyd Street, RM 710, Norman, Oklahoma 73019 U.S.A., colin.n.pennington@ou.edu Search for other works by this author on: GSW Google Scholar Author and Article Information Colin Pennington aSarkeys Energy Center, The University of Oklahoma, 100 East Boyd Street, RM 710, Norman, Oklahoma 73019 U.S.A., colin.n.pennington@ou.edu Xiaowei Chen aSarkeys Energy Center, The University of Oklahoma, 100 East Boyd Street, RM 710, Norman, Oklahoma 73019 U.S.A., colin.n.pennington@ou.edu Publisher: Seismological Society of America First Online: 15 Sep 2017 Online Issn: 1938-2057 Print Issn: 0895-0695 © Seismological Society of America Seismological Research Letters (2017) 88 (4): 1024–1031. https://doi.org/10.1785/0220170011 Article history First Online: 15 Sep 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Colin Pennington, Xiaowei Chen; Coulomb Stress Interactions during the Mw 5.8 Pawnee Sequence. Seismological Research Letters 2017;; 88 (4): 1024–1031. doi: https://doi.org/10.1785/0220170011 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 We investigate the stress interaction between the Watchorn, Labette, and Sooner Lake fault systems and the effect of precursory activities on the 3 September 2016 Mw 5.8 Pawnee earthquake. We obtain fault‐plane solutions for earthquakes with sufficient azimuthal coverage using the HASH algorithm, and then perform coulomb stress analysis on both seismogenic faults and individual nodal planes. Our results found that the three Mw≥3.0 foreshocks exerted a cumulative coulomb stress change increase of 0.68–1.98 bars at the mainshock hypocenter and also promoted failure for most aftershocks within 2 km of the mainshock. The coulomb stress change of 5 bars exerted by the mainshock also promoted failure for most aftershocks within the conjugate fault system. The results suggest that earthquake interaction should be fully considered in hazard assessment for induced seismicity. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.