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Induced seismicity due to hydraulic fracturing near Blackpool, UK: source modeling and event detection

Karamzadeh, Nasim; Lindner, Mike; Edwards, Benjamin; Gaucher, Emmanuel; Rietbrock, Andreas

Abstract:
Monitoring small magnitude induced seismicity requires a dense network of seismic stations and high-quality recordings in order to precisely determine events’ hypocentral parameters and mechanisms. However, microseismicity (e.g. swarm activity) can also occur in an area where a dense network is unavailable and recordings are limited to a few seismic stations at the surface. In this case, using advanced event detection techniques such as template matching can help to detect small magnitude shallow seismic events and give insights about the ongoing process at the subsurface giving rise to microseismicity. In this paper, we study shallow microseismic events caused by hydrofracking of the PNR-2 well near Blackpool, UK, in 2019 using recordings of a seismic network which was not designed to detect and locate such small events. By utilizing a sparse network of surface stations, small seismic events are detected using template matching technique. In addition, we apply a full-waveform moment tensor inversion to study the focal mechanisms of larger events (ML > 1) and used the double-difference location technique for events with high-quality and similar waveforms to obtain accurate relative locations. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000139754
Veröffentlicht am 12.11.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Geophysikalisches Institut (GPI)
Institut für Angewandte Geowissenschaften (AGW)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1383-4649, 1573-157X
KITopen-ID: 1000139754
Erschienen in Journal of Seismology
Verlag Springer
Band 25
Seiten 1385–1406
Vorab online veröffentlicht am 28.10.2021
Nachgewiesen in Web of Science
Scopus
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