ROCHEFORT (BE)
Quarry blast26 October 2022
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 12:14:542022-10-26
- UTC
- 10:14:542022-10-26
Main parameters
| Date and time | 2022-10-26 10:14:54 UTC 2022-10-26 12:14:54 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.164° N, 5.250° E Uncertainty ± 1.6 km |
| Event ID | ROB 17525 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-10-27 13:11:55 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
- 2.0 – 70.2km
- Mean velocity, P wave
- 5.7km/s
- Mean velocity, S wave
- 3.2km/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 0.33 s. S wave: 4 measurements, root-mean-square deviation 0.07 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 | 2.0 | 238 | 10:14:54.78+0.21 s | 10:14:55.25+0.68 s | 0.47 |
| CLAClavier | 28.5 | 7 | 10:14:59.50+4.93 s | 10:15:03.46+8.89 s | 3.96 |
| MRDMaredsous | 37.7 | 294 | 10:15:01.35+6.78 s | 10:15:06.19+11.62 s | 4.84 |
| DOUDourbes | 47.5 | 261 | 10:15:02.91+8.34 s | 10:15:09.21+14.64 s | 6.30 |
| HOUHouvegnez | 57.8 | 68 | 10:15:04.34+9.77 s | – | – |
| KLBKalborn | 61.8 | 96 | 10:15:04.94+10.37 s | – | – |
| MRGMont Rigi | 70.2 | 56 | 10:15:07.50+12.93 s | – | – |