Non–double-couple mechanisms of microearthquakes induced by hydraulic fracturing

0330651 - GFÚ 2010 RIV US eng J - Článek v odborném periodiku
Šílený, Jan - Hill, D. P. - Eisner, L. - Cornet, F. H.
Non–double-couple mechanisms of microearthquakes induced by hydraulic fracturing.
Journal of Geophysical Research. Roč. 114, B8 (2009), B08307/1-B08307/15. ISSN 0148-0227
Grant CEP: GA AV ČR IAA300120502; GA ČR GA205/09/0724
Grant ostatní: EC(XE) MTKI-CT-2004-517242
Výzkumný záměr: CEZ:AV0Z30120515
Klíčová slova: microearthquakes * source mechanisms * hydraulic fracturing
Kód oboru RIV: DC - Seismologie, vulkanologie a struktura Země
Impakt faktor: 3.082, rok: 2009

We have inverted polarity and amplitude information of representative microearthquakes to investigate source mechanisms of seismicity induced by hydraulic fracturing in the Carthage Cotton Valley, east Texas, gas field. With vertical arrays of four and eight three-component geophones in two monitoring wells, respectively, we were able to reliably determine source mechanisms of the strongest events with the best signal-to-noise ratio. Our analysis indicates predominantly non–double-couple source mechanisms with positive volumetric component consistent with opening cracks oriented close to expected hydraulic fracture orientation.
Trvalý link: http://hdl.handle.net/11104/0176387