SOIGNIES (BE)
Quarry blast3 March 2021
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 14:03:342021-03-03
- UTC
- 13:03:342021-03-03
Main parameters
| Date and time | 2021-03-03 13:03:34 UTC 2021-03-03 14:03:34 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.573° N, 4.062° E Uncertainty ± 2.2 km |
| Event ID | ROB 12625 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-03-03 16:08:38 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
- 6
- Epicentral distance
- 8.6 – 65.3km
- Mean velocity, P wave
- 6.6km/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: 6 measurements, root-mean-square deviation 0.15 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)6 stations | |||||
| SKQSteenkerque | 8.6 | 9 | 13:03:36.06+1.67 s | 13:03:37.46+3.07 s | 1.40 |
| BRQBracquegnies | 11.5 | 153 | 13:03:36.94+2.55 s | – | – |
| RQRRonquières | 12.1 | 72 | 13:03:36.72+2.33 s | – | – |
| SNFSeneffe | 17.2 | 114 | 13:03:37.62+3.23 s | – | – |
| BOUBougnies | 22.1 | 202 | 13:03:38.50+4.11 s | – | – |
| DOUDourbes | 65.3 | 144 | 13:03:44.84+10.45 s | 13:03:55.08+20.69 s | 10.24 |
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