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Ongoing seismicity in the Dallas-Fort Worth area

Eva Janska and Leo Eisner
Ongoing seismicity in the Dallas-Fort Worth area (in Passive seismic and microseismic; Part 2, Julie E. Shemeta (editor), Bill Goodway (editor), Mark Willis (editor) and Werner Heigl (editor))
Leading Edge (Tulsa, OK) (December 2012) 31 (12): 1462-1468


We report on and discuss the continuous seismic activity in the Dallas-Fort Worth (DFW) area. There was no reported seismic activity by USGS/NEIS until 31 October 2008, approximately seven weeks after the start of salt-water disposal at a nearby injection well in the southern part of the DFW airport. The salt-water disposal injection ceased in August 2009. The event detection based on crosscorrelation between several template events from DFW area and continuous seismic record shows that the seismic activity has been continuous for more than three years. Continuous monitoring at a local station allows us to complete the catalog down to a magnitude of zero, providing more detailed information on seismicity in the DFW area. This seismic activity migrated in space from a cluster southwest of the injection well to a cluster 2 km northeast of the injection well after May 2010. We show that the crosscorrelation detection at the WMOK regional station is not able to detect both south and northeast clusters of events without using multiple template events. Furthermore, we show magnitudes of the largest events increase since May 2010.

ISSN: 1070-485X
EISSN: 1938-3789
Serial Title: Leading Edge (Tulsa, OK)
Serial Volume: 31
Serial Issue: 12
Title: Ongoing seismicity in the Dallas-Fort Worth area
Title: Passive seismic and microseismic; Part 2
Author(s): Janska, EvaEisner, Leo
Author(s): Shemeta, Julie E.editor
Author(s): Goodway, Billeditor
Author(s): Willis, Markeditor
Author(s): Heigl, Wernereditor
Affiliation: Seismik, Prague, Czech Republic
Pages: 1462-1468
Published: 201212
Text Language: English
Publisher: Society of Exploration Geophysicists, Tulsa, OK, United States
References: 7
Accession Number: 2013-010865
Categories: SeismologyEnvironmental geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, geol. sketch map
N32°30'00" - N33°00'00", W97°37'00" - W96°30'00"
Secondary Affiliation: Institute of Rock Structure and Mechanics, CZE, Czech Republic
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States
Update Code: 201308
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