BRAINE-LE-COMTE (BE)
Quarry blast12 August 2022
- Magnitude
- 0.8ML
- Depth
- –
- Belgian time
- 12:03:412022-08-12
- UTC
- 10:03:412022-08-12
Main parameters
| Date and time | 2022-08-12 10:03:41 UTC 2022-08-12 12:03:41 Belgian time |
|---|---|
| Magnitude | ML 0.8 |
| Epicentral coordinates | 50.615° N, 4.131° E Uncertainty ± 4.5 km |
| Event ID | ROB 16810 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-08-12 12:25:49 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
- 5
- Epicentral distance
- 5.2 – 66.6km
- Mean velocity, P wave
- 5.7km/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 0.43 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 | 5.2 | 316 | 10:03:42.44+0.80 s | 10:03:43.68+2.04 s | 1.24 |
| RQRRonquières | 6.7 | 99 | 10:03:43.09+1.45 s | – | – |
| BRQBracquegnies | 14.9 | 179 | 10:03:43.22+1.58 s | – | – |
| SNFSeneffe | 15.9 | 137 | 10:03:44.16+2.52 s | 10:03:47.24+5.60 s | 3.08 |
| DOUDourbes | 66.6 | 150 | 10:03:53.26+11.62 s | 10:04:01.55+19.91 s | 8.29 |
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