ROCHEFORT (BE)
Quarry blast1 March 2022
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 12:48:202022-03-01
- UTC
- 11:48:202022-03-01
Main parameters
| Date and time | 2022-03-01 11:48:20 UTC 2022-03-01 12:48:20 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.151° N, 5.274° E Uncertainty ± 3.1 km |
| Event ID | ROB 15585 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-03-08 09:36:03 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
- 3.4 – 60.0km
- Mean velocity, P wave
- 8.1km/s
- Mean velocity, S wave
- 4.7km/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: 6 measurements, root-mean-square deviation 0.79 s. S wave: 5 measurements, root-mean-square deviation 2.05 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 | |||||
| RCHRochefort | 3.4 | 278 | 11:48:21.46+1.43 s | 11:48:22.17+2.14 s | 0.71 |
| GESGesves | 29.3 | 333 | 11:48:25.47+5.44 s | 11:48:28.97+8.94 s | 3.50 |
| CLAClavier | 29.9 | 4 | 11:48:25.65+5.62 s | 11:48:29.38+9.35 s | 3.73 |
| MRDMaredsous | 39.8 | 295 | 11:48:27.55+7.52 s | – | – |
| DOUDourbes | 48.9 | 263 | 11:48:29.27+9.24 s | 11:48:35.53+15.50 s | 6.26 |
| KLBKalborn | 60.0 | 95 | 11:48:28.47+8.44 s | 11:48:31.66+11.63 s | 3.19 |