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• W2933786906 abstract "Research Article| April 03, 2019 The Application of Coda and Energy Methods for Magnitude Estimation of Microseismic Events Germán Rodríguez‐Pradilla; Germán Rodríguez‐Pradilla aDepartment of Geoscience, University of Calgary, 2500 University Drive Northwest, Calgary, Alberta, Canada T2N 1N4, german.rodriguezprad@ucalgary.ca, eatond@ucalgary.ca Search for other works by this author on: GSW Google Scholar David W. Eaton David W. Eaton aDepartment of Geoscience, University of Calgary, 2500 University Drive Northwest, Calgary, Alberta, Canada T2N 1N4, german.rodriguezprad@ucalgary.ca, eatond@ucalgary.ca Search for other works by this author on: GSW Google Scholar Author and Article Information Germán Rodríguez‐Pradilla aDepartment of Geoscience, University of Calgary, 2500 University Drive Northwest, Calgary, Alberta, Canada T2N 1N4, german.rodriguezprad@ucalgary.ca, eatond@ucalgary.ca David W. Eaton aDepartment of Geoscience, University of Calgary, 2500 University Drive Northwest, Calgary, Alberta, Canada T2N 1N4, german.rodriguezprad@ucalgary.ca, eatond@ucalgary.ca Publisher: Seismological Society of America First Online: 03 Apr 2019 Online Issn: 1938-2057 Print Issn: 0895-0695 © Seismological Society of America Seismological Research Letters (2019) 90 (3): 1296–1307. https://doi.org/10.1785/0220180366 Article history First Online: 03 Apr 2019 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Germán Rodríguez‐Pradilla, David W. Eaton; The Application of Coda and Energy Methods for Magnitude Estimation of Microseismic Events. Seismological Research Letters 2019;; 90 (3): 1296–1307. doi: https://doi.org/10.1785/0220180366 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietySeismological Research Letters Search Advanced Search ABSTRACT Rapid and accurate estimation of event magnitudes is important for real‐time monitoring, especially in areas where a traffic‐light protocol for induced seismicity has been established. In some instances, event magnitudes that have been reported by different groups exhibit an undesirably high degree of scatter. This may be caused by various factors, including the use of different station configurations, mixed sensor hardware with varying instrumental response, waveform clipping, or lack of magnitude standardization. In this study, we use a recently acquired hydraulic‐fracture‐monitoring case study from western Canada to evaluate the use of a coda‐duration method to estimate magnitudes for moderate and small events in a range −0.5≤Mw≤3.6⁠. The dataset was acquired using a mixture of sensors, including shallow‐buried broadband seismometers and three‐component 10‐Hz geophones cemented at 27 m depth. Although local calibration is required, the coda‐magnitude method has certain advantages over traditional methods for rapid magnitude estimation, including relative insensitivity to waveform clipping, uncertain attenuation corrections, or both. By calibrating measured coda duration with independent estimates of Mw derived from low‐frequency spectral amplitude values, we obtained a trilinear representation for coda magnitude that is similar to previously published scales for other areas. Measurements of radiated S‐wave energy flux, obtained as a by‐product of the coda calculations, are consistent with previously reported energy relations and support an interpretation that underlying physical rupture processes are scale‐independent over the size range sampled by our dataset. You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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• W2933786906 title "The Application of Coda and Energy Methods for Magnitude Estimation of Microseismic Events" @default.
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