DINANT (BE)
Quarry blast7 October 2020
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 11:29:502020-10-07
- UTC
- 09:29:502020-10-07
Main parameters
| Date and time | 2020-10-07 09:29:50 UTC 2020-10-07 11:29:50 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.266° N, 4.962° E Uncertainty ± 1.4 km |
| Event ID | ROB 11025 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-10-07 23:47:13 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
- 14.4 – 32.4km
- Mean velocity, P wave
- 5.3km/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: 4 measurements, root-mean-square deviation 0.38 s. S wave: 4 measurements, root-mean-square deviation 0.23 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 | |||||
| MRDMaredsous | 14.4 | 286 | 09:29:53.19+2.88 s | 09:29:54.86+4.55 s | 1.67 |
| GESGesves | 16.0 | 34 | 09:29:53.38+3.07 s | 09:29:55.80+5.49 s | 2.42 |
| RCHRochefort | 22.6 | 123 | 09:29:54.10+3.79 s | 09:29:57.56+7.25 s | 3.46 |
| DOUDourbes | 32.4 | 234 | 09:29:57.00+6.69 s | 09:30:00.30+9.99 s | 3.30 |