SOIGNIES (BE)
Quarry blast6 April 2023
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 14:06:432023-04-06
- UTC
- 12:06:432023-04-06
Main parameters
| Date and time | 2023-04-06 12:06:43 UTC 2023-04-06 14:06:43 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.577° N, 4.069° E Uncertainty ± 6.9 km |
| Event ID | ROB 19280 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2023-04-06 22:27:49 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
- 4
- Epicentral distance
- 8.0 – 32.2km
- Mean velocity, P wave
- 6.0km/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: 4 measurements, root-mean-square deviation 0.13 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)4 stations | |||||
| SKQSteenkerque | 8.0 | 5 | 12:06:44.78+1.46 s | 12:06:46.25+2.93 s | 1.47 |
| BRQBracquegnies | 11.7 | 156 | 12:06:45.59+2.27 s | – | – |
| SNFSeneffe | 16.9 | 116 | 12:06:46.59+3.27 s | 12:06:49.42+6.10 s | 2.83 |
| TGATangissart | 32.2 | 84 | 12:06:48.88+5.56 s | 12:06:53.14+9.82 s | 4.26 |
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