DINANT (BE)
Quarry blast18 June 2020
- Magnitude
- 0.7ML
- Depth
- –
- Belgian time
- 10:29:132020-06-18
- UTC
- 08:29:132020-06-18
Main parameters
| Date and time | 2020-06-18 08:29:13 UTC 2020-06-18 10:29:13 Belgian time |
|---|---|
| Magnitude | ML 0.7 |
| Epicentral coordinates | 50.282° N, 4.905° E Uncertainty ± 3.3 km |
| Event ID | ROB 10290 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-06-18 10:45:55 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
- 5
- Epicentral distance
- 10.1 – 32.1km
- 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: 5 measurements, root-mean-square deviation 0.11 s. S wave: 4 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)5 stations | |||||
| MRDMaredsous | 10.1 | 283 | 08:29:14.60+1.19 s | 08:29:16.41+3.00 s | 1.81 |
| GESGesves | 17.3 | 48 | 08:29:16.12+2.71 s | – | – |
| RCHRochefort | 26.9 | 121 | 08:29:17.60+4.19 s | 08:29:21.13+7.72 s | 3.53 |
| DOUDourbes | 30.4 | 227 | 08:29:18.13+4.72 s | 08:29:22.40+8.99 s | 4.27 |
| CLAClavier | 32.1 | 61 | 08:29:18.55+5.14 s | 08:29:23.26+9.85 s | 4.71 |