CELLES (BE)
Quarry blast5 April 2022
- Magnitude
- 1.9ML
- Depth
- –
- Belgian time
- 12:32:042022-04-05
- UTC
- 10:32:042022-04-05
Main parameters
| Date and time | 2022-04-05 10:32:04 UTC 2022-04-05 12:32:04 Belgian time |
|---|---|
| Magnitude | ML 1.9 |
| Epicentral coordinates | 50.685° N, 3.501° E Uncertainty ± 3.8 km |
| Event ID | ROB 15895 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-04-09 12:43:43 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
- 41.1 – 196.5km
- Mean velocity, P wave
- 6.1km/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: 4 measurements, root-mean-square deviation 0.13 s.
Stations farther than 120 km are left out of the fit: the first waves to reach them have travelled beneath the crust, through the mantle, where they propagate faster.
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 | 41.1 | 95 | 10:32:11.77+7.36 s | 10:32:16.77+12.36 s | 5.00 |
| BRQBracquegnies | 50.4 | 117 | 10:32:13.05+8.64 s | – | – |
| SNFSeneffe | 58.7 | 109 | 10:32:14.32+9.91 s | 10:32:21.85+17.44 s | 7.53 |
| GESGesves | 117.3 | 106 | 10:32:24.16+19.75 s | 10:32:39.45+35.04 s | 15.29 |
| CLAClavier | 131.0 | 102 | 10:32:26.69+22.28 s | 10:32:43.02+38.61 s | 16.33 |
| KLBKalborn | 196.5 | 108 | 10:32:36.18+31.77 s | 10:32:59.42+55.01 s | 23.24 |