From:
Jessica R. Murray, Brendan W. Crowell, Mark H. Murray, Carl W. Ulberg, Jeffrey J. McGuire, Mario A. Aranha, Mike T. Hagerty; Incorporation of Real‐Time Earthquake Magnitudes Estimated via Peak Ground Displacement Scaling in the ShakeAlert Earthquake Early Warning System. Bulletin of the Seismological Society of America 2023; 113 (3): 1286–1310. doi: (https://doi-org.offcampus.lib.washington.edu/10.1785/0120220181)
events/event_name/
- event_name.geodetic.dat (channel file)
- event_name.geodetic.tnk (tankplayer file. These can be found in the release assets)
- event_name.geodetic.mseed.tar.gz (contains an mseed/ directory with miniseed files that correspond with the tankplayer file)
README.md (this file)
start_joint.py (example script for starting the seismic and geodetic tankfiles in separate threads. Based on code from Mike Hagerty (link) and ShakeAlert STP testsuite (link) )
Events fall under one of four processing regimes:
- Method 1: We processed raw 1 Hz GNSS data using methods for PPP with ambiguity resolution in simulated real-time mode via the RTNet software
- Method 2: Processed positions obtained from UNAVCO Inc (Hodgkinson et al., 2020)
- Method 3: Position time series from Ruhl et al. (2019)
- Method 4: Archived real-time data streams from processing with Fastlane by Central Washington University
| Event name | Processing method | Japanese name |
|---|---|---|
| 20030925_japan_subduction2 | 1 | Tokachi |
| 20040928_parkfield | 3 | |
| 20100404_El-MayorCucapah | 3 | |
| 20110309_japan_subduction10 | 1 | Miyagi |
| 20110311_japan_subduction11 | 1 | Tohoku |
| 20121207_japan_subduction17 | 1 | North Honshu |
| 20140824_southnapa | 1 | |
| 20160416_japan_shcrust43 | 1 | Kumamoto |
| 20181130_anchorage | 2 | |
| 20190706_ridgecrest6 | 2 | |
| 20210507_truckee | 4 | |
| 20210605_calipatria2 | 4 | |
| 20210708_antelope_valley | 4 | |
| 20211220_petrolia15 | 4 |
Note: All events have corresponding seismic files in the ShakeAlert testsuite.
Hodgkinson, K. M., D. J. Mencin, K. Feaux, C. Sievers, and G. S. Mattioli (2020). Evaluation of Earthquake Magnitude Estimation and Event Detection Thresholds for Real-Time GNSS Networks: Examples from Recent Events Captured by the Network of the Americas, Seismol. Res. Lett. 91 1628–1645, doi: 10.1785/0220190269.
Ruhl, C. J., D. Melgar, J. Geng, D. E. Goldberg, B. W. Crowell, R. M. Allen, Y. Bock, S. Barrientos, S. Riquelme, J. C. Baez, E. Cabral‐Cano, X. Pérez‐Campos, E. M. Hill, M. Protti, A. Ganas, M. Ruiz, P. Mothes, P. Jarrín, J.‐M. Nocquet, J.‐P. Avouac, E. D'Anastasio (2019). A global database of strong‐motion displacement GNSS recordings and an example application to PGD scaling, Seismol. Res. Lett. 90 271–279, doi: 10.1785/0220180177.