DINANT (BE)
Quarry blast4 June 2021
- Magnitude
- 1.0ML
- Depth
- –
- Belgian time
- 10:29:222021-06-04
- UTC
- 08:29:222021-06-04
Main parameters
| Date and time | 2021-06-04 08:29:22 UTC 2021-06-04 10:29:22 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.285° N, 4.900° E Uncertainty ± 1.7 km |
| Event ID | ROB 13590 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-06-08 10:17:54 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
- 9.6 – 87.2km
- 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 0.37 s. S wave: 4 measurements, root-mean-square deviation 0.19 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 | 9.6 | 282 | 08:29:24.29+1.85 s | 08:29:25.82+3.38 s | 1.53 |
| GESGesves | 17.3 | 50 | 08:29:25.66+3.22 s | 08:29:28.19+5.75 s | 2.53 |
| DOUDourbes | 30.3 | 226 | 08:29:28.01+5.57 s | 08:29:31.92+9.48 s | 3.91 |
| CLAClavier | 32.3 | 62 | 08:29:27.26+4.82 s | 08:29:33.00+10.56 s | 5.74 |
| MRGMont Rigi | 87.2 | 73 | 08:29:37.26+14.82 s | – | – |