CELLES (BE)
Quarry blast4 November 2022
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 12:03:502022-11-04
- UTC
- 11:03:502022-11-04
Main parameters
| Date and time | 2022-11-04 11:03:50 UTC 2022-11-04 12:03:50 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.663° N, 3.484° E Uncertainty ± 7.7 km |
| Event ID | ROB 17620 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-11-21 14:37:37 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
- 42.2 – 117.8km
- Mean velocity, P wave
- 5.2km/s
- Mean velocity, S wave
- 3.2km/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 0.51 s. S wave: 4 measurements, root-mean-square deviation 0.48 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 | 42.2 | 92 | 11:03:57.61+6.67 s | 11:04:02.72+11.78 s | 5.11 |
| BRQBracquegnies | 50.4 | 113 | 11:03:59.19+8.25 s | – | – |
| SNFSeneffe | 59.1 | 106 | 11:04:00.20+9.26 s | 11:04:07.19+16.25 s | 6.99 |
| UCCSUccle | 63.6 | 76 | 11:04:02.51+11.57 s | – | – |
| DOUDourbes | 101.2 | 128 | 11:04:09.29+18.35 s | 11:04:20.16+29.22 s | 10.87 |
| GESGesves | 117.8 | 105 | 11:04:11.52+20.58 s | 11:04:26.38+35.44 s | 14.86 |