SOIGNIES (BE)
Quarry blast29 January 2019
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 14:03:292019-01-29
- UTC
- 13:03:292019-01-29
Main parameters
| Date and time | 2019-01-29 13:03:29 UTC 2019-01-29 14:03:29 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.601° N, 4.059° E Uncertainty ± 1.0 km |
| Event ID | ROB 7780 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-02-04 08:09:32 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
- 5.6 – 76.8km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.4km/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 0.30 s. S wave: 5 measurements, root-mean-square deviation 0.10 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 | 5.6 | 15 | 13:03:30.90+1.51 s | 13:03:31.35+1.96 s | 0.45 |
| RQRRonquières | 11.8 | 87 | 13:03:31.66+2.27 s | – | – |
| BRQBracquegnies | 14.4 | 158 | 13:03:31.57+2.18 s | – | – |
| LESLessines | 19.6 | 309 | 13:03:33.40+4.01 s | 13:03:35.46+6.07 s | 2.06 |
| UCCBUccle | 30.5 | 44 | 13:03:34.67+5.28 s | 13:03:38.55+9.16 s | 3.88 |
| DOUDourbes | 68.0 | 146 | 13:03:41.43+12.04 s | 13:03:49.73+20.34 s | 8.30 |
| GESGesves | 76.8 | 108 | 13:03:42.59+13.20 s | 13:03:52.57+23.18 s | 9.98 |