ROCHEFORT (BE)
Quarry blast17 June 2022
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 12:10:132022-06-17
- UTC
- 10:10:132022-06-17
Main parameters
| Date and time | 2022-06-17 10:10:13 UTC 2022-06-17 12:10:13 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.098° N, 5.151° E Uncertainty ± 2.7 km |
| Event ID | ROB 16385 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-06-17 15:35:53 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
- 5
- Epicentral distance
- 8.3 – 39.8km
- Mean velocity, P wave
- 5.6km/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: 5 measurements, root-mean-square deviation 0.25 s. S wave: 5 measurements, root-mean-square deviation 0.29 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)5 stations | |||||
| RCHRochefort | 8.3 | 40 | 10:10:14.69+1.18 s | 10:10:16.47+2.96 s | 1.78 |
| GESGesves | 32.3 | 352 | 10:10:19.62+6.11 s | 10:10:23.90+10.39 s | 4.28 |
| MRDMaredsous | 35.5 | 310 | 10:10:20.18+6.67 s | 10:10:24.29+10.78 s | 4.11 |
| CLAClavier | 37.3 | 17 | 10:10:20.25+6.74 s | 10:10:24.66+11.15 s | 4.41 |
| DOUDourbes | 39.8 | 270 | 10:10:20.56+7.05 s | 10:10:25.69+12.18 s | 5.13 |