ROCHEFORT (BE)
Quarry blast9 September 2022
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 11:46:142022-09-09
- UTC
- 09:46:142022-09-09
Main parameters
| Date and time | 2022-09-09 09:46:14 UTC 2022-09-09 11:46:14 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.161° N, 5.259° E Uncertainty ± 0.4 km |
| Event ID | ROB 17070 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-09-09 14:28:18 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
- 2.4 – 61.2km
- Mean velocity, P wave
- 5.8km/s
- Mean velocity, S wave
- 3.4km/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 0.20 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 | 2.4 | 253 | 09:46:14.47+0.44 s | 09:46:14.95+0.92 s | 0.48 |
| GESGesves | 27.7 | 334 | 09:46:19.27+5.24 s | 09:46:22.68+8.65 s | 3.41 |
| CLAClavier | 28.8 | 6 | 09:46:19.26+5.23 s | 09:46:23.15+9.12 s | 3.89 |
| MRDMaredsous | 38.4 | 294 | 09:46:20.49+6.46 s | 09:46:25.70+11.67 s | 5.21 |
| DOUDourbes | 48.0 | 261 | 09:46:22.55+8.52 s | 09:46:28.65+14.62 s | 6.10 |
| KLBKalborn | 61.2 | 96 | 09:46:24.85+10.82 s | 09:46:32.30+18.27 s | 7.45 |