DINANT (BE)
Quarry blast15 October 2021
- Magnitude
- 1.0ML
- Depth
- –
- Belgian time
- 10:36:512021-10-15
- UTC
- 08:36:512021-10-15
Main parameters
| Date and time | 2021-10-15 08:36:51 UTC 2021-10-15 10:36:51 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.287° N, 4.913° E Uncertainty ± 0.6 km |
| Event ID | ROB 14615 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-10-18 15:09:01 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
- 5
- Epicentral distance
- 10.5 – 31.3km
- Mean velocity, P wave
- 5.6km/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: 5 measurements, root-mean-square deviation 0.11 s. S wave: 5 measurements, root-mean-square deviation 0.13 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 | 10.5 | 279 | 08:36:53.96+2.07 s | 08:36:55.50+3.61 s | 1.54 |
| GESGesves | 16.5 | 49 | 08:36:54.82+2.93 s | 08:36:57.19+5.30 s | 2.37 |
| RCHRochefort | 26.8 | 123 | 08:36:56.85+4.96 s | 08:37:00.20+8.31 s | 3.35 |
| DOUDourbes | 31.2 | 227 | 08:36:57.63+5.74 s | 08:37:01.56+9.67 s | 3.93 |
| CLAClavier | 31.3 | 62 | 08:36:57.79+5.90 s | 08:37:01.87+9.98 s | 4.08 |