CELLES (BE)
Quarry blast19 January 2023
- Magnitude
- 2.0ML
- Depth
- –
- Belgian time
- 13:01:362023-01-19
- UTC
- 12:01:362023-01-19
Main parameters
| Date and time | 2023-01-19 12:01:36 UTC 2023-01-19 13:01:36 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 50.684° N, 3.401° E Uncertainty ± 6.9 km |
| Event ID | ROB 18445 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2023-01-20 16:59:18 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
- 7
- Epicentral distance
- 31.4 – 107.3km
- Mean velocity, P wave
- 6.4km/s
- Mean velocity, S wave
- 3.6km/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: 7 measurements, root-mean-square deviation 0.70 s. S wave: 5 measurements, root-mean-square deviation 0.56 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)7 stations | |||||
| LESLessines | 31.4 | 84 | 12:01:42.77+6.62 s | 12:01:46.37+10.22 s | 3.60 |
| SKQSteenkerque | 48.2 | 94 | 12:01:44.73+8.58 s | 12:01:50.58+14.43 s | 5.85 |
| BLRGBlaregnies | 50.8 | 136 | 12:01:45.34+9.19 s | 12:01:51.20+15.05 s | 5.86 |
| BRQBracquegnies | 56.8 | 113 | 12:01:45.99+9.84 s | – | – |
| SNFSeneffe | 65.4 | 107 | 12:01:47.12+10.97 s | 12:01:54.25+18.10 s | 7.13 |
| TGATangissart | 79.8 | 96 | 12:01:48.26+12.11 s | – | – |
| DOUDourbes | 107.3 | 127 | 12:01:54.90+18.75 s | 12:02:07.35+31.20 s | 12.45 |