High-resolution Earthquake Relocation in the New Madrid Seismic Zone

Other| March 01, 2010 High-resolution Earthquake Relocation in the New Madrid Seismic Zone Meredith Dunn; Meredith Dunn Center for Earthquake Research and Information University of Memphis 3890 Central Avenue Memphis, Tennessee 38152 U.S.A. capowell@memphis.edu (C. A. P.) *Now at Hess Corporation, Houston, Texas. Search for other works by this author on: GSW Google Scholar Steve Horton; Steve Horton Center for Earthquake Research and Information University of Memphis 3890 Central Avenue Memphis, Tennessee 38152 U.S.A. capowell@memphis.edu (C. A. P.) Search for other works by this author on: GSW Google Scholar Heather DeShon; Heather DeShon Center for Earthquake Research and Information University of Memphis 3890 Central Avenue Memphis, Tennessee 38152 U.S.A. capowell@memphis.edu (C. A. P.) Search for other works by this author on: GSW Google Scholar Christine Powell Christine Powell Center for Earthquake Research and Information University of Memphis 3890 Central Avenue Memphis, Tennessee 38152 U.S.A. capowell@memphis.edu (C. A. P.) Search for other works by this author on: GSW Google Scholar Seismological Research Letters (2010) 81 (2): 406–413. https://doi.org/10.1785/gssrl.81.2.406 Article history first online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Meredith Dunn, Steve Horton, Heather DeShon, Christine Powell; High-resolution Earthquake Relocation in the New Madrid Seismic Zone. Seismological Research Letters 2010;; 81 (2): 406–413. doi: https://doi.org/10.1785/gssrl.81.2.406 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 present high-resolution earthquake locations for the New Madrid seismic zone (NMSZ) using the double-difference location method. The NMSZ consists of four major arms of seismicity centered in the central United States and is one of the few places of concentrated earthquake activity far from a major plate boundary. The zone generates approximately 200 earthquakes per year. Double-difference relocation techniques prove well suited for this region because the distance between neighboring events is small and station coverage is relatively dense. The initial data set consists of 1,394 earthquakes recorded between 2000 and 2006 by 197 stations. The catalog contains approximately 67,000 P-wave and 54,000 S-wave observations, which yields 480,000 differential times. Waveform cross-correlation of P and S waves provides an additional 135,000 high-precision differential times. Relocated hypocenters align along individual segments of the seismic zone, providing a sharper image of the NMSZ faults. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.