DINANT (BE)
Quarry blast7 December 2022
- Magnitude
- 0.8ML
- Depth
- –
- Belgian time
- 10:29:512022-12-07
- UTC
- 09:29:512022-12-07
Main parameters
| Date and time | 2022-12-07 09:29:51 UTC 2022-12-07 10:29:51 Belgian time |
|---|---|
| Magnitude | ML 0.8 |
| Epicentral coordinates | 50.282° N, 4.901° E Uncertainty ± 0.7 km |
| Event ID | ROB 17980 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-12-14 16:08:54 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
- 9.7 – 90.7km
- Mean velocity, P wave
- 5.5km/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: 6 measurements, root-mean-square deviation 0.09 s. S wave: 5 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)5 stations | |||||
| MRDMaredsous | 9.7 | 283 | 09:29:52.94+1.74 s | 09:29:54.50+3.30 s | 1.56 |
| GESGesves | 17.6 | 49 | 09:29:54.50+3.30 s | 09:29:56.93+5.73 s | 2.43 |
| RCHRochefort | 27.2 | 121 | 09:29:56.16+4.96 s | 09:29:59.55+8.35 s | 3.39 |
| DOUDourbes | 30.1 | 227 | 09:29:56.90+5.70 s | 09:30:00.66+9.46 s | 3.76 |
| CLAClavier | 32.4 | 62 | 09:29:57.13+5.93 s | 09:30:01.60+10.40 s | 4.47 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 90.7 | 53 | 09:30:07.68+16.48 s | – | – |