Published December 1, 2021 | Version v2

Offshore British Columbia microseismicity

Authors/Creators

  • 1. University of British Columbia

Contributors

Supervisor:

  • 1. University of British Columbia

Description

Initial and relocations of microseismicity in the Queen Charlotte triple junction and Explorer microplate region offshore British Columbia, Canada from 1995-2021. These data include detections using the Regressive Estimator (REST) algorithm and those from network analysts at the Geological Survey of Canada (GSC). The files include earthquake locations, origin times, and P and S wave travel/arrival times. Centroid moment tensor solutions from the Geological Survey of Canada.

 

1. comb_all_event_4pr_final.dat
All (63,566) 4-pair initial data (Unique GSC, REST, and matched events.)
Event header format:

YYYY MM DD HH MM SC LAT LON DEP 0 0 0 0 ID

2. phase_REST_initial_all.dat
Detections and locations for all REST events from 1995-2021. Excludes 9,929 events matched with the GSC.
Event header format:

  1. YYYY MM DD HH MM SC LAT LON DEP 0 0 0 0 ID
    Phase detection format:
    Station Traveltime Quality Phase

3. phase_matchGSC_initial.dat
9,929 events matched between REST-GSC detections from 1995-2021. Locations and phase detections from the GSC.
Event header format:

  1. YYYY MM DD HH MM SC LAT LON DEP 0 0 0 0 ID
    Phase detection format:
    Station Traveltime Quality Phase

4. phase_GSC_initial_all_mag_ml.dat
40,839 events from the GSC catalog from 1995-2021. Includes local (ML) magnitudes.
Event header format:

  1. YYYY MM DD HH MM SC LAT LON DEP MAG 0 0 0 ID
    Phase detection format:
    Station Traveltime Quality Phase

5. hypreloc_fix5_4pr_all.reloc
18,441 final hypoDD relocations in hypoDD file format.

6. PGC_CMT.tgz
.tgz file includes Geological Survey of Canada centroid moment tensor solutions and associated README file.

Files

Files (50.3 MB)

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md5:9cc56d784793c5b1a04273ade3baeb55
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md5:9ca22544584243aa0f0b5b45a1b9a3ba
3.2 MB Download
md5:1656707b8a5ebbf1894d079757f66e6b
110.3 kB Download
md5:d43a43dcb4a915da531f286b349f34aa
10.2 MB Download
md5:74372751d66295f94423fd20570f14b5
2.9 MB Download
md5:0123b8e3c7e9c89793c5b0793ef7d648
29.7 MB Download

Additional details

References

  • Kao, H., Shan, S., Bent, A., Woodgold, C., Rogers, G., Cassidy, J. F., and Ristau, J. (2012). Regional centroid-moment-tensor analysis for earthquakes in Canada and adjacent regions: An update. Seismological Research Letters, 83(5), 505-988515. doi: https://doi.org/10.1785/gssrl.83.3.505