DINANT (BE)
Quarry blast23 June 2020
- Magnitude
- 1.0ML
- Depth
- –
- Belgian time
- 10:29:152020-06-23
- UTC
- 08:29:152020-06-23
Main parameters
| Date and time | 2020-06-23 08:29:15 UTC 2020-06-23 10:29:15 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.277° N, 4.907° E Uncertainty ± 0.8 km |
| Event ID | ROB 10330 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-06-23 17:03:33 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
- 10.2 – 32.3km
- Mean velocity, P wave
- 5.8km/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 0.16 s. S wave: 5 measurements, root-mean-square deviation 0.25 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 | 10.2 | 286 | 08:29:16.74+1.67 s | 08:29:18.77+3.70 s | 2.03 |
| GESGesves | 17.6 | 47 | 08:29:18.16+3.09 s | 08:29:21.03+5.96 s | 2.87 |
| RCHRochefort | 26.6 | 121 | 08:29:19.91+4.84 s | 08:29:23.26+8.19 s | 3.35 |
| DOUDourbes | 30.1 | 228 | 08:29:20.61+5.54 s | 08:29:24.67+9.60 s | 4.06 |
| CLAClavier | 32.3 | 61 | 08:29:20.84+5.77 s | 08:29:25.58+10.51 s | 4.74 |