ROCHEFORT (BE)
Quarry blast10 March 2022
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 11:54:252022-03-10
- UTC
- 10:54:252022-03-10
Main parameters
| Date and time | 2022-03-10 10:54:25 UTC 2022-03-10 11:54:25 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.183° N, 5.245° E Uncertainty ± 0.5 km |
| Event ID | ROB 15650 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-03-16 09:43:04 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
- 3.4 – 62.4km
- 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: 4 measurements, root-mean-square deviation 0.13 s. S wave: 4 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)4 stations | |||||
| RCHRochefort | 3.4 | 203 | 10:54:25.83+0.62 s | 10:54:26.52+1.31 s | 0.69 |
| CLAClavier | 26.6 | 9 | 10:54:29.96+4.75 s | 10:54:33.75+8.54 s | 3.79 |
| DOUDourbes | 47.5 | 258 | 10:54:33.61+8.40 s | 10:54:39.62+14.41 s | 6.01 |
| KLBKalborn | 62.4 | 98 | 10:54:35.97+10.76 s | 10:54:44.07+18.86 s | 8.10 |