ROCHEFORT (BE)
Quarry blast14 October 2022
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 12:35:182022-10-14
- UTC
- 10:35:182022-10-14
Main parameters
| Date and time | 2022-10-14 10:35:18 UTC 2022-10-14 12:35:18 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.159° N, 5.270° E Uncertainty ± 0.9 km |
| Event ID | ROB 17370 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-10-15 15:21:36 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
- 7
- Epicentral distance
- 3.1 – 69.4km
- Mean velocity, P wave
- 5.7km/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: 7 measurements, root-mean-square deviation 0.12 s. S wave: 6 measurements, root-mean-square deviation 0.17 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)7 stations | |||||
| RCHRochefort | 3.1 | 261 | 10:35:19.37+0.64 s | 10:35:19.85+1.12 s | 0.48 |
| GESGesves | 28.3 | 333 | 10:35:24.07+5.34 s | 10:35:27.60+8.87 s | 3.53 |
| CLAClavier | 29.0 | 4 | 10:35:24.08+5.35 s | 10:35:27.57+8.84 s | 3.49 |
| MRDMaredsous | 39.2 | 294 | 10:35:25.96+7.23 s | 10:35:30.56+11.83 s | 4.60 |
| DOUDourbes | 48.8 | 262 | 10:35:27.49+8.76 s | 10:35:33.22+14.49 s | 5.73 |
| KLBKalborn | 60.3 | 96 | 10:35:29.50+10.77 s | 10:35:36.44+17.71 s | 6.94 |
| MRGMont Rigi | 69.4 | 55 | 10:35:31.39+12.66 s | – | – |