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dc.creatorFrohlich, Cliffen_US
dc.creatorGlidewell, Jenniferen_US
dc.creatorBrunt, Michaelen_US
dc.date.accessioned2016-10-28T19:51:32Z
dc.date.available2016-10-28T19:51:32Z
dc.date.issued2012-04en_US
dc.identifierdoi:10.15781/T2QF8JN26
dc.identifier.citationFrohlich, Cliff, Jennifer Glidewell, and Michael Brunt. "Location and Felt Reports for the 25 April 2010 mbLg 3.9 Earthquake near Alice, Texas: Was it Induced by Petroleum Production?." Bulletin of the Seismological Society of America, Vol. 102, No. 2 (Apr., 2012): 457-466.en_US
dc.identifier.issn0037-1106en_US
dc.identifier.urihttp://hdl.handle.net/2152/43248
dc.description.abstractThis study examines seismograms and felt reports for the 25 April 2010 Alice, Texas, earthquake and explores its possible relationship with gas and oil production in the Stratton field. We identified P arrivals at seven broadband stations situated within similar to 100 km of the epicentral region and determined a location of 27.72 degrees N, 97.95 degrees W, about 11 km east of the location reported by the National Earthquake Information Center but coincident with the region of highest intensity (modified Mercalli intensity V-VI) felt reports. We compare arrivals for observed secondary P and S arrivals with predictions from a published Gulf Coast velocity model. At nearby stations, the secondary arrivals are much stronger than primary arrivals; the arrival times and the presence of high-amplitude phases traveling at the Love-wave velocity of the uppermost model layer suggest the focal depth was shallow, 3 km or less. This places the 2010 hypocenter approximately along the mapped trace of the Vicksburg fault zone and at the depth of the Frio formation, the principal productive member in the Stratton field, which has produced at least 2.7 trillion cubic feet of gas and about 100 million barrels of oil since production commenced in 1938. We conclude it is plausible, although not proven definitively, that production in the Stratton field contributed to the occurrence of the 2010 Alice earthquake and an earlier similar earthquake that occurred on 24 March 1997.en_US
dc.description.sponsorshipEwing-Worzel Summer Fellowshipen_US
dc.description.sponsorshipU.S. Geological Survey (USGS), Department of the Interior, under USGS G12AP20001en_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.subjectfieldsen_US
dc.subjectoilen_US
dc.subjectgeochemistry & geophysicsen_US
dc.titleLocation and Felt Reports for the 25 April 2010 mbLg 3.9 Earthquake Near Alice, Texas: Was it Induced by Petroleum Production?en_US
dc.typeArticleen_US
dc.description.departmentInstitute for Geophysicsen_US
dc.rights.restrictionOpenen_US
dc.identifier.doi10.1785/0120110179en_US
dc.contributor.utaustinauthorFrohlich, Cliffen_US
dc.contributor.utaustinauthorGlidewell, Jenniferen_US
dc.contributor.utaustinauthorBrunt, Michaelen_US
dc.relation.ispartofserialBulletin of the Seismological Society of Americaen_US


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