ROCHEFORT (BE)
Quarry blast31 May 2022
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 12:05:482022-05-31
- UTC
- 10:05:482022-05-31
Main parameters
| Date and time | 2022-05-31 10:05:48 UTC 2022-05-31 12:05:48 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.161° N, 5.257° E Uncertainty ± 0.4 km |
| Event ID | ROB 16265 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-06-01 16:32:33 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
- 2.3 – 61.3km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.3km/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 0.15 s. S wave: 6 measurements, root-mean-square deviation 0.15 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 | 2.3 | 252 | 10:05:48.68+0.34 s | 10:05:49.27+0.93 s | 0.59 |
| GESGesves | 27.7 | 334 | 10:05:53.45+5.11 s | 10:05:57.08+8.74 s | 3.63 |
| CLAClavier | 28.8 | 6 | 10:05:53.42+5.08 s | 10:05:57.44+9.10 s | 4.02 |
| MRDMaredsous | 38.2 | 294 | 10:05:54.95+6.61 s | 10:06:00.27+11.93 s | 5.32 |
| DOUDourbes | 47.9 | 261 | 10:05:56.76+8.42 s | 10:06:02.84+14.50 s | 6.08 |
| KLBKalborn | 61.3 | 96 | 10:05:58.94+10.60 s | 10:06:06.95+18.61 s | 8.01 |