BRAINE-LE-COMTE (BE)
Quarry blast5 May 2023
- Magnitude
- 0.9ML
- Depth
- –
- Belgian time
- 11:57:162023-05-05
- UTC
- 09:57:162023-05-05
Main parameters
| Date and time | 2023-05-05 09:57:16 UTC 2023-05-05 11:57:16 Belgian time |
|---|---|
| Magnitude | ML 0.9 |
| Epicentral coordinates | 50.609° N, 4.113° E Uncertainty ± 1.5 km |
| Event ID | ROB 19450 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2023-05-06 11:13:33 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
- 5.0 – 28.9km
- Mean velocity, P wave
- 5.8km/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 0.19 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 | 5.0 | 332 | 09:57:17.39+0.68 s | 09:57:18.69+1.98 s | 1.30 |
| RQRRonquières | 7.9 | 93 | 09:57:18.34+1.63 s | – | – |
| BRQBracquegnies | 14.4 | 174 | 09:57:19.47+2.76 s | – | – |
| SNFSeneffe | 16.3 | 132 | 09:57:19.38+2.67 s | 09:57:22.63+5.92 s | 3.25 |
| TGATangissart | 28.9 | 91 | 09:57:21.75+5.04 s | 09:57:25.96+9.25 s | 4.21 |
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