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dc.creatorJustinic, Ashley Hoween_US
dc.creatorStump, Brianen_US
dc.creatorHayward, Chrisen_US
dc.creatorFrohlich, Cliffen_US
dc.date.accessioned2016-10-28T19:51:43Z
dc.date.available2016-10-28T19:51:43Z
dc.date.issued2013-12en_US
dc.identifierdoi:10.15781/T2F18SH92
dc.identifier.citationJustinic, Ashley Howe, Brian Stump, Chris Hayward, and Cliff Frohlich. "Analysis of the Cleburne, Texas, earthquake sequence from June 2009 to June 2010." Bulletin of the Seismological Society of America, Vol. 103, No. 6 (Dec., 2013): 3083-3093.en_US
dc.identifier.issn0037-1106en_US
dc.identifier.urihttp://hdl.handle.net/2152/43258
dc.description.abstractOn 9 June 2009, an M-bLg 2.8 earthquake shook Cleburne, Texas, a community not known to have previously experienced earthquakes. Over 50 small earthquakes followed by the end of December 2009. A temporary network of four and then five IRIS-Passcal broadband systems was deployed from June 2009 to June 2010, recording data that were used to locate 38 events with the most confident P- and S-arrival picks. Event locations were distributed along a 2 km long north-northeast trend. The location centroid was at 32.298 degrees N, 97.372 degrees W and at 3.6 km depth. This location is approximately 1.3 km from a saltwater disposal well that began injection in October 2007 and 3.2 km away from a second injection well that was active from September 2005 to late July 2009. Focal mechanisms estimated for the best-recorded events suggest a north-northeast-south-southwest-trending normal fault with a dip of similar to 50 degrees and a component of oblique motion (rake of similar to-80 degrees). This average solution is generally consistent with the north-northeast-trending extensional faults that are prevalent across parts of Texas, Oklahoma, Louisiana, and Arkansas. Stress drops calculated from P and S spectra for seven different events ranged from 3.9 to 90 bars, with most estimates between 40 and 50 bars, typical values for intraplate earthquakes. Because there were no known previous earthquakes, and the located events were close to the two injection wells and near the injection depth, the possibility exists that earthquakes may be related to fluid injection.en_US
dc.description.sponsorshipSMUen_US
dc.description.sponsorshipNational Science Foundation EAR-0552316en_US
dc.description.sponsorshipDepartment of Energy National Nuclear Security Administrationen_US
dc.description.sponsorshipUSGS, Department of the Interior G3AP00023en_US
dc.description.sponsorshipResearch Partnership 11122-27en_US
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.subjectinduced seismicityen_US
dc.subjectsource parametersen_US
dc.subjectbarnett shaleen_US
dc.subjectinjectionen_US
dc.subjectfluiden_US
dc.subjectwavesen_US
dc.subjectfielden_US
dc.subjectgeochemistry & geophysicsen_US
dc.titleAnalysis of the Cleburne, Texas, Earthquake Sequence from June 2009 to June 2010en_US
dc.typeArticleen_US
dc.description.departmentInstitute for Geophysicsen_US
dc.rights.restrictionOpenen_US
dc.identifier.doi10.1785/0120120336en_US
dc.contributor.utaustinauthorFrohlich, Cliffen_US
dc.relation.ispartofserialBulletin of the Seismological Society of Americaen_US


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