SOIGNIES (BE)
Quarry blast19 June 2020
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 14:04:052020-06-19
- UTC
- 12:04:052020-06-19
Main parameters
| Date and time | 2020-06-19 12:04:05 UTC 2020-06-19 14:04:05 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.580° N, 4.040° E Uncertainty ± 1.1 km |
| Event ID | ROB 10310 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-06-19 14:50:45 Belgian time
Location map
- Epicentre
- Station that recorded the event
Arrival times at the stations
Each station first records the P wave, the fastest, then the S wave. The farther a station is from the epicentre, the later the waves reach it and the wider the gap between the two.
- Stations
- 7
- Epicentral distance
- 8.2 – 91.3km
- Mean velocity, P wave
- 6.1km/s
- Mean velocity, S wave
- 3.3km/s
- P wave
- S wave
- Curve fitted to the measurements
Notes and method
Curves: travel time of a direct wave in a homogeneous medium. The velocity of each wave and an origin-time shift, common to both, are fitted to the measurements by least squares. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 7 measurements, root-mean-square deviation 0.34 s. S wave: 6 measurements, root-mean-square deviation 0.08 s.
Station measurements
P- and S-wave arrivals and ground displacement measured at each station. Click a column heading to change the order.
| km | ° | UTC | UTC | s | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)7 stations | |||||
| SKQSteenkerque | 8.2 | 20 | 12:04:06.75+1.68 s | 12:04:07.99+2.92 s | 1.24 |
| BRQBracquegnies | 12.9 | 148 | 12:04:07.29+2.22 s | 12:04:09.38+4.31 s | 2.09 |
| RQRRonquières | 13.5 | 77 | 12:04:07.48+2.41 s | 12:04:09.36+4.29 s | 1.88 |
| LESLessines | 20.2 | 316 | 12:04:09.01+3.94 s | 12:04:11.41+6.34 s | 2.40 |
| MRDMaredsous | 60.3 | 121 | 12:04:14.51+9.44 s | 12:04:23.72+18.65 s | 9.21 |
| DOUDourbes | 66.9 | 144 | 12:04:16.56+11.49 s | 12:04:25.68+20.61 s | 9.12 |
| CLAClavier | 91.3 | 101 | 12:04:20.52+15.45 s | – | – |