SEG 2015 - Nanometrics Event Schedule


Oral Discussion / E-Poster

"Moment magnitude computation and instrumentation selection for induced seismicity traffic light systems"

Presenter: Dr. Sepideh Karimi, Seismologist        

Details: Tuesday 20 October I  Room 225 I 3:35 pm


Daily On-Booth Presentations

Location: Booth 1610

1. "Monitoring hydraulic fracturing operations using sparse surface networks"
Date & Time: 10:00 am Monday Oct 19

   10:30 am Tuesday Oct 20
2. "Challenges and strategies for monitoring induced seismicity"
Date & Time: 11:00 am Monday Oct 19
   2:00 pm Tuesday Oct 20
3. "Moment magnitude computation and instrumentation selection for induced seismicity traffic light systems" 
Date & Time: 10:30 am Wednesday Oct 21
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"Moment magnitude computation and instrumentation selection for induced-Seismicity traffic light systems"

S. Karimi, E. Yenier, D. Baturan, A. Law, Nanometrics Inc, Ottawa, Canada

We perform an in depth analysis on the size of recent induced seismicity occurring in Duvernay formation. The dataset consists of events recorded between Aug 31, 2014 and March 7, 2015 near Fox Creek, Alberta. We calculate moment magnitude (Mw) with the commonly used spectral fitting technique, and examine the relation between moment magnitude and local magnitudes (ML) reported by Natural Resources Canada (NRCAN) for this seismic sequence.

Attenuation is a key factor in ground-motion modeling, and can influence the moment magnitudes estimated from observed motions. As part of this study, we investigate the regional attenuation attributes of Fox Creek earthquakes and calculate their source parameters.

Instrumentation selection can have a significant impact on the results and costs of monitoring. In this study, we also evaluate the suitability of geophones and seismometers for moment magnitude estimation at local and regional distances. We find that seismometers are able to estimate reliable moment magnitudes over much larger distance and magnitude ranges resulting in fewer required stations for induced seismicity monitoring applications.

Apr 10, 2015

Tags: Conference Attendance