SOIGNIES (BE)
Quarry blast30 March 2022
- Magnitude
- 0.8ML
- Depth
- –
- Belgian time
- 13:01:002022-03-30
- UTC
- 11:01:002022-03-30
Main parameters
| Date and time | 2022-03-30 11:01:00 UTC 2022-03-30 13:01:00 Belgian time |
|---|---|
| Magnitude | ML 0.8 |
| Epicentral coordinates | 50.570° N, 4.103° E Uncertainty ± 0.5 km |
| Event ID | ROB 15840 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-04-06 09:31:12 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
- 5
- Epicentral distance
- 8.9 – 29.9km
- Mean velocity, P wave
- 6.3km/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: 5 measurements, root-mean-square deviation 0.07 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)5 stations | |||||
| SKQSteenkerque | 8.9 | 350 | 11:01:02.31+1.83 s | 11:01:03.44+2.96 s | 1.13 |
| RQRRonquières | 9.5 | 65 | 11:01:02.60+2.12 s | 11:01:04.09+3.61 s | 1.49 |
| BRQBracquegnies | 10.2 | 167 | 11:01:02.53+2.05 s | – | – |
| SNFSeneffe | 14.4 | 117 | 11:01:03.32+2.84 s | – | – |
| TGATangissart | 29.9 | 82 | 11:01:05.70+5.22 s | 11:01:09.45+8.97 s | 3.75 |
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