DINANT (BE)
Quarry blast15 October 2020
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 10:29:242020-10-15
- UTC
- 08:29:242020-10-15
Main parameters
| Date and time | 2020-10-15 08:29:24 UTC 2020-10-15 10:29:24 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.288° N, 4.902° E Uncertainty ± 0.7 km |
| Event ID | ROB 11060 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-10-15 11:41:07 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 – 58.5km
- Mean velocity, P wave
- 6.0km/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 0.16 s. S wave: 5 measurements, root-mean-square deviation 0.22 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)6 stations | |||||
| MRDMaredsous | 9.7 | 279 | 08:29:25.95+1.63 s | 08:29:28.00+3.68 s | 2.05 |
| GESGesves | 17.0 | 51 | 08:29:27.28+2.96 s | 08:29:30.15+5.83 s | 2.87 |
| RCHRochefort | 27.5 | 122 | 08:29:29.06+4.74 s | 08:29:33.11+8.79 s | 4.05 |
| DOUDourbes | 30.7 | 226 | 08:29:29.84+5.52 s | 08:29:34.00+9.68 s | 4.16 |
| CLAClavier | 32.0 | 63 | 08:29:29.97+5.65 s | 08:29:34.55+10.23 s | 4.58 |
| BRQBracquegnies | 58.5 | 292 | 08:29:34.48+10.16 s | – | – |