ROCHEFORT (BE)
Quarry blast14 April 2022
- Magnitude
- 1.2ML
- Depth
- 0.9km ± 10.4
- Belgian time
- 15:59:142022-04-14
- UTC
- 13:59:142022-04-14
Main parameters
| Date and time | 2022-04-14 13:59:14 UTC 2022-04-14 15:59:14 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.099° N, 5.144° E Uncertainty ± 5.8 km |
| Depth of hypocenter | 0.9 ± 10.4 km |
| Event ID | ROB 15975 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-04-19 13:14:49 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
- 4
- Epicentral distance
- 8.6 – 83.7km
- Mean velocity, P wave
- 5.3km/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. Hypocenter at a depth of 0.9 km. P wave: 4 measurements, root-mean-square deviation 0.18 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)4 stations | |||||
| RCHRochefort | 8.6 | 43 | 13:59:15.36+1.21 s | 13:59:16.76+2.61 s | 1.40 |
| MRDMaredsous | 35.1 | 310 | 13:59:20.49+6.34 s | 13:59:25.10+10.95 s | 4.61 |
| DOUDourbes | 39.3 | 270 | 13:59:20.77+6.62 s | 13:59:25.86+11.71 s | 5.09 |
| MEMHMembach | 83.7 | 47 | 13:59:29.43+15.28 s | – | – |
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