Publication information

Geological Survey of Canada
Open File 8718

A comprehensive earthquake catalogue for the Fort St. John-Dawson Creek region, British Columbia, 2017–2018

R. Visser, H. Kao, B. Smith, C. Goerzen, B. Kontou, R.M.H. Dokht, J. Hutchinson, F. Tan, 
and A. Babaie Mahani

© Her Majesty the Queen in Right of Canada, as represented by the Minister of Natural Resources, 2020

Permanent link: https://doi.org/10.4095/326015

Publications in this series have not been edited; they are released as submitted by the author.

Recommended citation

Visser, R., Kao, H., Smith, B., Goerzen, C., Kontou, B., Dokht, R.M.H., Hutchinson, J., Tan, F., and 
       Babaie Mahani, A., 2020. A comprehensive earthquake catalogue for the Fort St. John–Dawson     
       Creek region, British Columbia, 2017–2018; Geological Survey of Canada, Open File 8718, 
       1 .zip file. https://doi.org/10.4095/326015

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Contents

To gain a better understanding of induced seismicity in northeastern British Columbia, we conducted an analysis of seismic data to locate earthquakes that occurred within the area of 55.5˚N–56.3˚N and 119.8˚W-121.2˚W for the years of 2017 and 2018. This catalogue contains earthquakes that were detected and located using a combination of manual analysis and a semi-automated process utilizing the newly developed Seismicity-Scanning based on Navigated Automatic Phase-picking (S-SNAP) algorithm (Tan et al., 2019). There were two major seismic station deployments within the study area during the study period which significantly increased our ability to locate small earthquakes (ML <1.5). Our dataset consisted of continuous seismic waveforms from a total of 52 stations operated by various organizations in the region. A total of 10,692 events were identified, located, and had solutions which passed our quality control criteria. The earthquake catalogue, picking information, and magnitude information are included in separate files and can easily be joined using the earthquake origin IDs. The total number of events in 2017 and 2018 are 5779 and 4914, respectively. The overall magnitude of completeness of our catalogue is ML ~1.5 for the period of 2017-01 through 2017-06, when there were only 2 stations within the study area, and ~ML 1.0 when there were 10 or more stations in the area from 2017-07 onwards.

Directory structure

of_8718_readme.rtf 		(this file)
of_8718.pdf			(report)
of_8718_Appendix_1.xlsx		(Origin, event magnitude, and location error information for all  
 earthquakes) 
of_8718_Appendix_2.xlsx	(Arrival information for all earthquakes)
of_8718_Appendix_3.xlsx	(Station magnitude information for all earthquakes)

Corresponding Author contact information

Honn Kao (honn.kao@canada.ca)
Geological Survey of Canada
9860 West Saanich Road
Sidney, British Columbia
V8L 4B2

Availability information

This publication is available for free download through GEOSCAN (https://geoscan.nrcan.gc.ca/).

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