SOIGNIES (BE)
Quarry blast25 February 2019
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 14:03:212019-02-25
- UTC
- 13:03:212019-02-25
Main parameters
| Date and time | 2019-02-25 13:03:21 UTC 2019-02-25 14:03:21 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.579° N, 4.074° E Uncertainty ± 1.2 km |
| Event ID | ROB 7875 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-02-25 14:36:11 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
- 7.8 – 65.4km
- Mean velocity, P wave
- 5.7km/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 0.16 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 | 7.8 | 3 | 13:03:22.88+1.62 s | 13:03:24.25+2.99 s | 1.37 |
| RQRRonquières | 11.1 | 74 | 13:03:23.05+1.79 s | – | – |
| BRQBracquegnies | 11.8 | 158 | 13:03:23.50+2.24 s | – | – |
| LESLessines | 21.9 | 312 | 13:03:25.36+4.10 s | – | – |
| BOUBougnies | 23.0 | 203 | 13:03:25.35+4.09 s | – | – |
| UCCSUccle | 31.6 | 40 | 13:03:27.13+5.87 s | 13:03:30.65+9.39 s | 3.52 |
| DOUDourbes | 65.4 | 145 | 13:03:32.81+11.55 s | 13:03:41.83+20.57 s | 9.02 |
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